---
_id: '17089'
abstract:
- lang: eng
  text: How the coordination of neuronal spiking and brain rhythms between hippocampal
    subregions supports memory function remains elusive. We studied the interregional
    coordination of CA3 neuronal spiking with CA1 theta oscillations by recording
    electrophysiological signals along the proximodistal axis of the hippocampus in
    rats that were performing a high-memory-demand recognition memory task adapted
    from humans. We found that CA3 population spiking occurs preferentially at the
    peak of distal CA1 theta oscillations when memory was tested but only when previously
    encountered stimuli were presented. In addition, decoding analyses revealed that
    only population cell firing of proximal CA3 together with that of distal CA1 can
    predict performance at test in the present non-spatial task. Overall, our work
    demonstrates an important role for the synchronization of CA3 neuronal activity
    with CA1 theta oscillations during memory testing.
acknowledgement: We would like to thank J. Maiwald for her assistance in animal behavior
  training, experiments, and brain slice preparation; D. Koch for her assistance in
  recording drive building and brain slicing; K. Kaefer and J. Wallenschus (IST Austria)
  for their initial technical support; S. Mikulovich for her comments on an early
  version of the manuscript; C. Reichert for his comments on SVM analyses; and J.
  Pakan for English proofreading. This project is funded by the DFG (CRC 779 and CRC
  1436).
article_number: '114276'
article_processing_charge: Yes (in subscription journal)
article_type: original
author:
- first_name: Shih Pi
  full_name: Ku, Shih Pi
  last_name: Ku
- first_name: Erika
  full_name: Atucha, Erika
  last_name: Atucha
- first_name: Nico
  full_name: Alavi, Nico
  last_name: Alavi
- first_name: Halla
  full_name: Mulla-Osman, Halla
  last_name: Mulla-Osman
- first_name: Rukhshona
  full_name: Kayumova, Rukhshona
  last_name: Kayumova
- first_name: Motoharu
  full_name: Yoshida, Motoharu
  last_name: Yoshida
- first_name: Jozsef L
  full_name: Csicsvari, Jozsef L
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
- first_name: Magdalena M.
  full_name: Sauvage, Magdalena M.
  last_name: Sauvage
citation:
  ama: Ku SP, Atucha E, Alavi N, et al. Phase locking of hippocampal CA3 neurons to
    distal CA1 theta oscillations selectively predicts memory performance. <i>Cell
    Reports</i>. 2024;43(6). doi:<a href="https://doi.org/10.1016/j.celrep.2024.114276">10.1016/j.celrep.2024.114276</a>
  apa: Ku, S. P., Atucha, E., Alavi, N., Mulla-Osman, H., Kayumova, R., Yoshida, M.,
    … Sauvage, M. M. (2024). Phase locking of hippocampal CA3 neurons to distal CA1
    theta oscillations selectively predicts memory performance. <i>Cell Reports</i>.
    Elsevier. <a href="https://doi.org/10.1016/j.celrep.2024.114276">https://doi.org/10.1016/j.celrep.2024.114276</a>
  chicago: Ku, Shih Pi, Erika Atucha, Nico Alavi, Halla Mulla-Osman, Rukhshona Kayumova,
    Motoharu Yoshida, Jozsef L Csicsvari, and Magdalena M. Sauvage. “Phase Locking
    of Hippocampal CA3 Neurons to Distal CA1 Theta Oscillations Selectively Predicts
    Memory Performance.” <i>Cell Reports</i>. Elsevier, 2024. <a href="https://doi.org/10.1016/j.celrep.2024.114276">https://doi.org/10.1016/j.celrep.2024.114276</a>.
  ieee: S. P. Ku <i>et al.</i>, “Phase locking of hippocampal CA3 neurons to distal
    CA1 theta oscillations selectively predicts memory performance,” <i>Cell Reports</i>,
    vol. 43, no. 6. Elsevier, 2024.
  ista: Ku SP, Atucha E, Alavi N, Mulla-Osman H, Kayumova R, Yoshida M, Csicsvari
    JL, Sauvage MM. 2024. Phase locking of hippocampal CA3 neurons to distal CA1 theta
    oscillations selectively predicts memory performance. Cell Reports. 43(6), 114276.
  mla: Ku, Shih Pi, et al. “Phase Locking of Hippocampal CA3 Neurons to Distal CA1
    Theta Oscillations Selectively Predicts Memory Performance.” <i>Cell Reports</i>,
    vol. 43, no. 6, 114276, Elsevier, 2024, doi:<a href="https://doi.org/10.1016/j.celrep.2024.114276">10.1016/j.celrep.2024.114276</a>.
  short: S.P. Ku, E. Atucha, N. Alavi, H. Mulla-Osman, R. Kayumova, M. Yoshida, J.L.
    Csicsvari, M.M. Sauvage, Cell Reports 43 (2024).
das_tickbox: '1'
dataavailabilitystatement: "Data published in this manuscript are available upon request.\r\n\r\nAll
  the original code has been deposited at Zenodo: https://zenodo.org/records/11125633.
  The DOI is listed in the key resources table.\r\n\r\nAny additional information
  required to reanalyze the data reported in this paper is available upon request."
date_created: 2024-06-02T22:00:56Z
date_published: 2024-06-25T00:00:00Z
date_updated: 2026-10-15T08:37:28Z
day: '25'
ddc:
- '570'
department:
- _id: JoCs
doi: 10.1016/j.celrep.2024.114276
external_id:
  isi:
  - '001252792600001'
file:
- access_level: open_access
  checksum: 9b43f8ca5e5a12ae96e3fb9df06385c1
  content_type: application/pdf
  creator: dernst
  date_created: 2024-06-03T07:12:45Z
  date_updated: 2024-06-03T07:12:45Z
  file_id: '17096'
  file_name: 2024_CellReports_Ku.pdf
  file_size: 4371015
  relation: main_file
  success: 1
file_date_updated: 2024-06-03T07:12:45Z
fulldoi: https://doi.org/10.1016/j.celrep.2024.114276
has_accepted_license: '1'
intvolume: '        43'
isi: 1
issue: '6'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
publication: Cell Reports
publication_identifier:
  eissn:
  - 2211-1247
publication_status: published
publisher: Elsevier
quality_controlled: '1'
researchdata_availability: upon request
scopus_import: '1'
status: public
supplementarymaterial: yes
title: Phase locking of hippocampal CA3 neurons to distal CA1 theta oscillations selectively
  predicts memory performance
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 43
year: '2024'
...
---
_id: '17410'
abstract:
- lang: eng
  text: We present a cavity-electromechanical system comprising a superconducting
    quantum interference device which is embedded in a microwave resonator and coupled
    via a pickup loop to a 6-μ⁢g magnetically levitated superconducting sphere. The
    motion of the sphere in the magnetic trap induces a frequency shift in the SQUID-cavity
    system. We use microwave spectroscopy to characterize the system, and we demonstrate
    that the electromechanical interaction is tunable. The measured displacement sensitivity
    of 10−7m/√Hz defines a path towards ground-state cooling of levitated particles
    with Planck-scale masses at millikelvin environment temperatures.
acknowledgement: We gratefully acknowledge valuable discussions with Uros Delic, Lorenzo
  Magrini, and Corentin Gut. This work was supported by the European Union’s Horizon
  2020 research and innovation program under Grant No. 863132 (iQLev) and No. 101080143
  (SuperMeQ), the European Research Council under Grant No. 951234 (ERC Synergy QXtreme),
  the Austrian and Bavarian Academy of Sciences (Topical Team SGQ), the Alexander
  von Humboldt Foundation through a Feodor Lynen Fellowship (P.S.), the Swedish Research
  Council under Grant No. 2020-00381 (G.H.), and the Deutsche Forschungsgemeinschaft
  (DFG, German Research Foundation) via Germany’s Excellence Strategy EXC-2111-390814868
  (H.H., R.G.).
article_number: '014078'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Philip
  full_name: Schmidt, Philip
  last_name: Schmidt
- first_name: Remi
  full_name: Claessen, Remi
  last_name: Claessen
- first_name: Gerard
  full_name: Higgins, Gerard
  last_name: Higgins
- first_name: Joachim
  full_name: Hofer, Joachim
  last_name: Hofer
- first_name: Jannek J.
  full_name: Hansen, Jannek J.
  last_name: Hansen
- first_name: Peter
  full_name: Asenbaum, Peter
  last_name: Asenbaum
- first_name: Martin
  full_name: Zemlicka, Martin
  id: 2DCF8DE6-F248-11E8-B48F-1D18A9856A87
  last_name: Zemlicka
  orcid: 0009-0005-0878-3032
- first_name: Kevin
  full_name: Uhl, Kevin
  last_name: Uhl
- first_name: Reinhold
  full_name: Kleiner, Reinhold
  last_name: Kleiner
- first_name: Rudolf
  full_name: Gross, Rudolf
  last_name: Gross
- first_name: Hans
  full_name: Huebl, Hans
  last_name: Huebl
- first_name: Michael
  full_name: Trupke, Michael
  last_name: Trupke
- first_name: Markus
  full_name: Aspelmeyer, Markus
  last_name: Aspelmeyer
citation:
  ama: Schmidt P, Claessen R, Higgins G, et al. Remote sensing of a levitated superconductor
    with a flux-tunable microwave cavity. <i>Physical Review Applied</i>. 2024;22.
    doi:<a href="https://doi.org/10.1103/PhysRevApplied.22.014078">10.1103/PhysRevApplied.22.014078</a>
  apa: Schmidt, P., Claessen, R., Higgins, G., Hofer, J., Hansen, J. J., Asenbaum,
    P., … Aspelmeyer, M. (2024). Remote sensing of a levitated superconductor with
    a flux-tunable microwave cavity. <i>Physical Review Applied</i>. American Physical
    Society. <a href="https://doi.org/10.1103/PhysRevApplied.22.014078">https://doi.org/10.1103/PhysRevApplied.22.014078</a>
  chicago: Schmidt, Philip, Remi Claessen, Gerard Higgins, Joachim Hofer, Jannek J.
    Hansen, Peter Asenbaum, Martin Zemlicka, et al. “Remote Sensing of a Levitated
    Superconductor with a Flux-Tunable Microwave Cavity.” <i>Physical Review Applied</i>.
    American Physical Society, 2024. <a href="https://doi.org/10.1103/PhysRevApplied.22.014078">https://doi.org/10.1103/PhysRevApplied.22.014078</a>.
  ieee: P. Schmidt <i>et al.</i>, “Remote sensing of a levitated superconductor with
    a flux-tunable microwave cavity,” <i>Physical Review Applied</i>, vol. 22. American
    Physical Society, 2024.
  ista: Schmidt P, Claessen R, Higgins G, Hofer J, Hansen JJ, Asenbaum P, Zemlicka
    M, Uhl K, Kleiner R, Gross R, Huebl H, Trupke M, Aspelmeyer M. 2024. Remote sensing
    of a levitated superconductor with a flux-tunable microwave cavity. Physical Review
    Applied. 22, 014078.
  mla: Schmidt, Philip, et al. “Remote Sensing of a Levitated Superconductor with
    a Flux-Tunable Microwave Cavity.” <i>Physical Review Applied</i>, vol. 22, 014078,
    American Physical Society, 2024, doi:<a href="https://doi.org/10.1103/PhysRevApplied.22.014078">10.1103/PhysRevApplied.22.014078</a>.
  short: P. Schmidt, R. Claessen, G. Higgins, J. Hofer, J.J. Hansen, P. Asenbaum,
    M. Zemlicka, K. Uhl, R. Kleiner, R. Gross, H. Huebl, M. Trupke, M. Aspelmeyer,
    Physical Review Applied 22 (2024).
das_tickbox: '0'
date_created: 2024-08-11T22:01:12Z
date_published: 2024-07-30T00:00:00Z
date_updated: 2026-10-15T09:06:26Z
day: '30'
department:
- _id: JoFi
doi: 10.1103/PhysRevApplied.22.014078
external_id:
  arxiv:
  - '2401.08854'
  isi:
  - '001284571700002'
fulldoi: https://doi.org/10.1103/PhysRevApplied.22.014078
intvolume: '        22'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2401.08854
month: '07'
oa: 1
oa_version: Preprint
publication: Physical Review Applied
publication_identifier:
  eissn:
  - 2331-7019
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
researchdata_availability: yes
scopus_import: '1'
status: public
supplementarymaterial: yes
title: Remote sensing of a levitated superconductor with a flux-tunable microwave
  cavity
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 22
year: '2024'
...
---
APC_amount: 5666,27 EUR
OA_place: publisher
OA_type: gold
_id: '15180'
abstract:
- lang: eng
  text: Characterizing the prevalence and properties of faint active galactic nuclei
    (AGNs) in the early Universe is key for understanding the formation of supermassive
    black holes (SMBHs) and determining their role in cosmic reionization. We perform
    a spectroscopic search for broad Hα emitters at z ≈ 4–6 using deep JWST/NIRCam
    imaging and wide field slitless spectroscopy from the EIGER and FRESCO surveys.
    We identify 20 Hα lines at z = 4.2–5.5 that have broad components with line widths
    from ∼1200–3700 km s−1, contributing ∼30%–90% of the total line flux. We interpret
    these broad components as being powered by accretion onto SMBHs with implied masses
    ∼107–8M⊙. In the UV luminosity range MUV,AGN+host = −21 to −18, we measure number
    densities of ≈10−5 cMpc−3. This is an order of magnitude higher than expected
    from extrapolating quasar UV luminosity functions (LFs). Yet, such AGN are found
    in only <1% of star-forming galaxies at z ∼ 5. The number density discrepancy
    is much lower when compared to the broad Hα LF. The SMBH mass function agrees
    with large cosmological simulations. In two objects, we detect complex Hα profiles
    that we tentatively interpret as caused by absorption signatures from dense gas
    fueling SMBH growth and outflows. We may be witnessing early AGN feedback that
    will clear dust-free pathways through which more massive blue quasars are seen.
    We uncover a strong correlation between reddening and the fraction of total galaxy
    luminosity arising from faint AGN. This implies that early SMBH growth is highly
    obscured and that faint AGN are only minor contributors to cosmic reionization.
acknowledgement: "We thank the anonymous referee for constructive comments that helped
  improve the manuscript. This work is based on observations made with the NASA/ESA/CSA
  James Webb Space Telescope. The data were obtained from the Mikulski Archive for
  Space Telescopes at the Space Telescope Science Institute, which is operated by
  the Association of Universities for Research in Astronomy, Inc., under NASA contract
  NAS 5-03127 for JWST. These observations are associated with program Nos. 1243 and
  1895. The specific observations analyzed can be accessed via doi:10.17909/4xx0-zj76.
  Funded by the European Union (ERC, AGENTS, 101076224). Views and opinions expressed
  are however those of the author(s) only and do not necessarily reflect those of
  the European Union or the European Research Council. Neither the European Union
  nor the granting authority can be held responsible for them. R.P.N. acknowledges
  funding from JWST programs GO-1933 and GO-2279. Support for this work for R.P.N.
  was provided by NASA through the NASA Hubble Fellowship grant HST-HF2-51515.001-A
  awarded by the Space Telescope Science Institute, which is operated by the Association
  of Universities for Research in Astronomy, Incorporated, under NASA contract NAS5-26555.
  Support for this work for G.I. was provided by NASA through grant JWST-GO-01895
  awarded by the Space Telescope Science Institute, which is operated by the Association
  of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555.
  This work has received funding from the Swiss State Secretariat for Education, Research
  and Innovation (SERI) under contract No. MB22.00072, as well as from the Swiss National
  Science Foundation (SNSF) through project grant 200020_207349. The Cosmic Dawn Center
  (DAWN) is funded by the Danish National Research Foundation under grant No. 140.\r\nFacility:
  JWST - James Webb Space Telescope, HST - Hubble Space Telescope satellite\r\nSoftware:​​​​​​​
  Python, matplotlib (Hunter 2007), numpy (Harris et al. 2020), scipy (Virtanen et
  al. 2020), Astropy (Astropy Collaboration et al. 2013, 2018), Imfit (Erwin 2015)."
article_number: '129'
article_processing_charge: Yes
article_type: original
author:
- first_name: Jorryt J
  full_name: Matthee, Jorryt J
  id: 7439a258-f3c0-11ec-9501-9df22fe06720
  last_name: Matthee
  orcid: 0000-0003-2871-127X
- first_name: Rohan P.
  full_name: Naidu, Rohan P.
  last_name: Naidu
- first_name: Gabriel
  full_name: Brammer, Gabriel
  last_name: Brammer
- first_name: John
  full_name: Chisholm, John
  last_name: Chisholm
- first_name: Anna-Christina
  full_name: Eilers, Anna-Christina
  last_name: Eilers
- first_name: Andy
  full_name: Goulding, Andy
  last_name: Goulding
- first_name: Jenny
  full_name: Greene, Jenny
  last_name: Greene
- first_name: Daichi
  full_name: Kashino, Daichi
  last_name: Kashino
- first_name: Ivo
  full_name: Labbe, Ivo
  last_name: Labbe
- first_name: Simon J.
  full_name: Lilly, Simon J.
  last_name: Lilly
- first_name: Ruari
  full_name: Mackenzie, Ruari
  last_name: Mackenzie
- first_name: Pascal A.
  full_name: Oesch, Pascal A.
  last_name: Oesch
- first_name: Andrea
  full_name: Weibel, Andrea
  last_name: Weibel
- first_name: Stijn
  full_name: Wuyts, Stijn
  last_name: Wuyts
- first_name: Mengyuan
  full_name: Xiao, Mengyuan
  last_name: Xiao
- first_name: Rongmon
  full_name: Bordoloi, Rongmon
  last_name: Bordoloi
- first_name: Rychard
  full_name: Bouwens, Rychard
  last_name: Bouwens
- first_name: Pieter
  full_name: van Dokkum, Pieter
  last_name: van Dokkum
- first_name: Garth
  full_name: Illingworth, Garth
  last_name: Illingworth
- first_name: Ivan
  full_name: Kramarenko, Ivan
  last_name: Kramarenko
- first_name: Michael V.
  full_name: Maseda, Michael V.
  last_name: Maseda
- first_name: Charlotte
  full_name: Mason, Charlotte
  last_name: Mason
- first_name: Romain A.
  full_name: Meyer, Romain A.
  last_name: Meyer
- first_name: Erica J.
  full_name: Nelson, Erica J.
  last_name: Nelson
- first_name: Naveen A.
  full_name: Reddy, Naveen A.
  last_name: Reddy
- first_name: Irene
  full_name: Shivaei, Irene
  last_name: Shivaei
- first_name: Robert A.
  full_name: Simcoe, Robert A.
  last_name: Simcoe
- first_name: Minghao
  full_name: Yue, Minghao
  last_name: Yue
citation:
  ama: 'Matthee JJ, Naidu RP, Brammer G, et al. Little Red Dots: An abundant population
    of faint active galactic nuclei at z ∼ 5 revealed by the EIGER and FRESCO JWST
    surveys. <i>The Astrophysical Journal</i>. 2024;963(2). doi:<a href="https://doi.org/10.3847/1538-4357/ad2345">10.3847/1538-4357/ad2345</a>'
  apa: 'Matthee, J. J., Naidu, R. P., Brammer, G., Chisholm, J., Eilers, A.-C., Goulding,
    A., … Yue, M. (2024). Little Red Dots: An abundant population of faint active
    galactic nuclei at z ∼ 5 revealed by the EIGER and FRESCO JWST surveys. <i>The
    Astrophysical Journal</i>. IOP Publishing. <a href="https://doi.org/10.3847/1538-4357/ad2345">https://doi.org/10.3847/1538-4357/ad2345</a>'
  chicago: 'Matthee, Jorryt J, Rohan P. Naidu, Gabriel Brammer, John Chisholm, Anna-Christina
    Eilers, Andy Goulding, Jenny Greene, et al. “Little Red Dots: An Abundant Population
    of Faint Active Galactic Nuclei at z ∼ 5 Revealed by the EIGER and FRESCO JWST
    Surveys.” <i>The Astrophysical Journal</i>. IOP Publishing, 2024. <a href="https://doi.org/10.3847/1538-4357/ad2345">https://doi.org/10.3847/1538-4357/ad2345</a>.'
  ieee: 'J. J. Matthee <i>et al.</i>, “Little Red Dots: An abundant population of
    faint active galactic nuclei at z ∼ 5 revealed by the EIGER and FRESCO JWST surveys,”
    <i>The Astrophysical Journal</i>, vol. 963, no. 2. IOP Publishing, 2024.'
  ista: 'Matthee JJ, Naidu RP, Brammer G, Chisholm J, Eilers A-C, Goulding A, Greene
    J, Kashino D, Labbe I, Lilly SJ, Mackenzie R, Oesch PA, Weibel A, Wuyts S, Xiao
    M, Bordoloi R, Bouwens R, van Dokkum P, Illingworth G, Kramarenko I, Maseda MV,
    Mason C, Meyer RA, Nelson EJ, Reddy NA, Shivaei I, Simcoe RA, Yue M. 2024. Little
    Red Dots: An abundant population of faint active galactic nuclei at z ∼ 5 revealed
    by the EIGER and FRESCO JWST surveys. The Astrophysical Journal. 963(2), 129.'
  mla: 'Matthee, Jorryt J., et al. “Little Red Dots: An Abundant Population of Faint
    Active Galactic Nuclei at z ∼ 5 Revealed by the EIGER and FRESCO JWST Surveys.”
    <i>The Astrophysical Journal</i>, vol. 963, no. 2, 129, IOP Publishing, 2024,
    doi:<a href="https://doi.org/10.3847/1538-4357/ad2345">10.3847/1538-4357/ad2345</a>.'
  short: J.J. Matthee, R.P. Naidu, G. Brammer, J. Chisholm, A.-C. Eilers, A. Goulding,
    J. Greene, D. Kashino, I. Labbe, S.J. Lilly, R. Mackenzie, P.A. Oesch, A. Weibel,
    S. Wuyts, M. Xiao, R. Bordoloi, R. Bouwens, P. van Dokkum, G. Illingworth, I.
    Kramarenko, M.V. Maseda, C. Mason, R.A. Meyer, E.J. Nelson, N.A. Reddy, I. Shivaei,
    R.A. Simcoe, M. Yue, The Astrophysical Journal 963 (2024).
corr_author: '1'
das_tickbox: '0'
date_created: 2024-03-25T08:54:47Z
date_published: 2024-03-07T00:00:00Z
date_updated: 2026-10-15T09:15:55Z
day: '07'
ddc:
- '550'
department:
- _id: JoMa
doi: 10.3847/1538-4357/ad2345
external_id:
  isi:
  - '001184703600001'
file:
- access_level: open_access
  checksum: dc7af4694f9f94a551417ab49fa43edf
  content_type: application/pdf
  creator: dernst
  date_created: 2024-03-25T09:31:58Z
  date_updated: 2024-03-25T09:31:58Z
  file_id: '15184'
  file_name: 2024_AstrophysicalJourn_Matthee.pdf
  file_size: 6047536
  relation: main_file
  success: 1
file_date_updated: 2024-03-25T09:31:58Z
fulldoi: https://doi.org/10.3847/1538-4357/ad2345
has_accepted_license: '1'
intvolume: '       963'
isi: 1
issue: '2'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
project:
- _id: bd9b2118-d553-11ed-ba76-db24564edfea
  grant_number: '101076224'
  name: Young galaxies as tracers and agents of cosmic reionization
publication: The Astrophysical Journal
publication_identifier:
  eissn:
  - 1538-4357
  issn:
  - 0004-637X
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
related_material:
  link:
  - description: News on ISTA website
    relation: press_release
    url: https://ista.ac.at/en/news/baby-quasars-growing-supermassive-black-holes/
researchdata_availability: no
scopus_import: '1'
status: public
supplementarymaterial: yes
title: 'Little Red Dots: An abundant population of faint active galactic nuclei at
  z ∼ 5 revealed by the EIGER and FRESCO JWST surveys'
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 963
year: '2024'
...
---
DOAJ_listed: '1'
_id: '15170'
abstract:
- lang: eng
  text: 'The James Webb Space Telescope is revealing a new population of dust-reddened
    broad-line active galactic nuclei (AGN) at redshifts z ≳ 5. Here we present deep
    NIRSpec/Prism spectroscopy from the Cycle 1 Treasury program Ultradeep NIRSpec
    and NIRCam ObserVations before the Epoch of Reionization (UNCOVER) of 15 AGN candidates
    selected to be compact, with red continua in the rest-frame optical but with blue
    slopes in the UV. From NIRCam photometry alone, they could have been dominated
    by dusty star formation or an AGN. Here we show that the majority of the compact
    red sources in UNCOVER are dust-reddened AGN: 60% show definitive evidence for
    broad-line Hα with a FWHM > 2000 km s −1, 20% of the current data are inconclusive,
    and 20% are brown dwarf stars. We propose an updated photometric criterion to
    select red z > 5 AGN that excludes brown dwarfs and is expected to yield >80%
    AGN. Remarkably, among all zphot > 5 galaxies with F277W – F444W > 1 in UNCOVER
    at least 33% are AGN regardless of compactness, climbing to at least 80% AGN for
    sources with F277W – F444W > 1.6. The confirmed AGN have black hole masses of
    107–109M⊙. While their UV luminosities (−16 > MUV > −20 AB mag) are low compared
    to UV-selected AGN at these epochs, consistent with percent-level scattered AGN
    light or low levels of unobscured star formation, the inferred bolometric luminosities
    are typical of 107–109M⊙ black holes radiating at ∼10%–40% the Eddington limit.
    The number densities are surprisingly high at ∼10−5 Mpc−3 mag−1, 100 times more
    common than the faintest UV-selected quasars, while accounting for ∼1% of the
    UV-selected galaxies. While their UV faintness suggests they may not contribute
    strongly to reionization, their ubiquity poses challenges to models of black hole
    growth.'
acknowledgement: J.E.G. and A.D.G acknowledge support from NSF/AAG grant No. 1007094,
  and J.E.G. also acknowledges support from NSF/AAG grant No. 1007052. A.Z. acknowledges
  support by grant No. 2020750 from the United States-Israel Binational Science Foundation
  (BSF) and grant No. 2109066 from the United States National Science Foundation (NSF),
  and by the Ministry of Science & Technology of Israel. The Cosmic Dawn Center is
  funded by the Danish National Research Foundation (DNRF) under grant No. 140. This
  work has received funding from the Swiss State Secretariat for Education, Research
  and Innovation (SERI) under contract number MB22.00072, as well as from the Swiss
  National Science Foundation (SNSF) through project grant 200020_207349. P.D. acknowledges
  support from the NWO grant 016.VIDI.189.162 ("ODIN") and from the European Commission's
  and University of Groningen's CO-FUND Rosalind Franklin program. K.G. and T.N. acknowledge
  support from Australian Research Council Laureate Fellowship FL180100060. H.A. and
  I.C. acknowledge support from CNES, focused on the JWST mission, and the Programme
  National Cosmology and Galaxies (PNCG) of CNRS/INSU with INP and IN2P3, cofunded
  by CEA and CNES. R.P.N. acknowledges funding from JWST programs GO-1933 and GO-2279.
  Support for this work was provided by NASA through the NASA Hubble Fellowship grant
  HST-HF2-51515.001-A awarded by the Space Telescope Science Institute, which is operated
  by the Association of Universities for Research in Astronomy, Incorporated, under
  NASA contract NAS5-26555. The research of C.C.W. is supported by NOIRLab, which
  is managed by the Association of Universities for Research in Astronomy (AURA) under
  a cooperative agreement with the National Science Foundation. B.W. acknowledges
  support from JWST-GO-02561.022-A. A.J.B. acknowledges funding support from NASA/ADAP
  grant 21-ADAP21-0187. Support for this work was provided by The Brinson Foundation
  through a Brinson Prize Fellowship grant. R.P.N. acknowledges support for this work
  provided by NASA through the NASA Hubble Fellowship grant HST-HF2-51515.001-A awarded
  by the Space Telescope Science Institute, which is operated by the Association of
  Universities for Research in Astronomy, Incorporated, under NASA contract NAS5-26555.
  C.P. thanks Marsha and Ralph Schilling for the generous support of this research.
article_number: '39'
article_processing_charge: Yes
article_type: original
arxiv: 1
author:
- first_name: Jenny E.
  full_name: Greene, Jenny E.
  last_name: Greene
- first_name: Ivo
  full_name: Labbe, Ivo
  last_name: Labbe
- first_name: Andy D.
  full_name: Goulding, Andy D.
  last_name: Goulding
- first_name: Lukas J.
  full_name: Furtak, Lukas J.
  last_name: Furtak
- first_name: Iryna
  full_name: Chemerynska, Iryna
  last_name: Chemerynska
- first_name: Vasily
  full_name: Kokorev, Vasily
  last_name: Kokorev
- first_name: Pratika
  full_name: Dayal, Pratika
  last_name: Dayal
- first_name: Marta
  full_name: Volonteri, Marta
  last_name: Volonteri
- first_name: Christina C.
  full_name: Williams, Christina C.
  last_name: Williams
- first_name: Bingjie
  full_name: Wang, Bingjie
  last_name: Wang
- first_name: David J.
  full_name: Setton, David J.
  last_name: Setton
- first_name: Adam J.
  full_name: Burgasser, Adam J.
  last_name: Burgasser
- first_name: Rachel
  full_name: Bezanson, Rachel
  last_name: Bezanson
- first_name: Hakim
  full_name: Atek, Hakim
  last_name: Atek
- first_name: Gabriel
  full_name: Brammer, Gabriel
  last_name: Brammer
- first_name: Sam E.
  full_name: Cutler, Sam E.
  last_name: Cutler
- first_name: Robert
  full_name: Feldmann, Robert
  last_name: Feldmann
- first_name: Seiji
  full_name: Fujimoto, Seiji
  last_name: Fujimoto
- first_name: Karl
  full_name: Glazebrook, Karl
  last_name: Glazebrook
- first_name: Anna
  full_name: De Graaff, Anna
  last_name: De Graaff
- first_name: Gourav
  full_name: Khullar, Gourav
  last_name: Khullar
- first_name: Joel
  full_name: Leja, Joel
  last_name: Leja
- first_name: Danilo
  full_name: Marchesini, Danilo
  last_name: Marchesini
- first_name: Michael V.
  full_name: Maseda, Michael V.
  last_name: Maseda
- first_name: Jorryt J
  full_name: Matthee, Jorryt J
  id: 7439a258-f3c0-11ec-9501-9df22fe06720
  last_name: Matthee
  orcid: 0000-0003-2871-127X
- first_name: Tim B.
  full_name: Miller, Tim B.
  last_name: Miller
- first_name: Rohan P.
  full_name: Naidu, Rohan P.
  last_name: Naidu
- first_name: Themiya
  full_name: Nanayakkara, Themiya
  last_name: Nanayakkara
- first_name: Pascal A.
  full_name: Oesch, Pascal A.
  last_name: Oesch
- first_name: Richard
  full_name: Pan, Richard
  last_name: Pan
- first_name: Casey
  full_name: Papovich, Casey
  last_name: Papovich
- first_name: Sedona H.
  full_name: Price, Sedona H.
  last_name: Price
- first_name: Pieter
  full_name: Van Dokkum, Pieter
  last_name: Van Dokkum
- first_name: John R.
  full_name: Weaver, John R.
  last_name: Weaver
- first_name: Katherine E.
  full_name: Whitaker, Katherine E.
  last_name: Whitaker
- first_name: Adi
  full_name: Zitrin, Adi
  last_name: Zitrin
citation:
  ama: Greene JE, Labbe I, Goulding AD, et al. UNCOVER spectroscopy confirms the surprising
    ubiquity of active galactic nuclei in red sources at z &#62; 5. <i>Astrophysical
    Journal</i>. 2024;964. doi:<a href="https://doi.org/10.3847/1538-4357/ad1e5f">10.3847/1538-4357/ad1e5f</a>
  apa: Greene, J. E., Labbe, I., Goulding, A. D., Furtak, L. J., Chemerynska, I.,
    Kokorev, V., … Zitrin, A. (2024). UNCOVER spectroscopy confirms the surprising
    ubiquity of active galactic nuclei in red sources at z &#62; 5. <i>Astrophysical
    Journal</i>. IOP Publishing. <a href="https://doi.org/10.3847/1538-4357/ad1e5f">https://doi.org/10.3847/1538-4357/ad1e5f</a>
  chicago: Greene, Jenny E., Ivo Labbe, Andy D. Goulding, Lukas J. Furtak, Iryna Chemerynska,
    Vasily Kokorev, Pratika Dayal, et al. “UNCOVER Spectroscopy Confirms the Surprising
    Ubiquity of Active Galactic Nuclei in Red Sources at z &#62; 5.” <i>Astrophysical
    Journal</i>. IOP Publishing, 2024. <a href="https://doi.org/10.3847/1538-4357/ad1e5f">https://doi.org/10.3847/1538-4357/ad1e5f</a>.
  ieee: J. E. Greene <i>et al.</i>, “UNCOVER spectroscopy confirms the surprising
    ubiquity of active galactic nuclei in red sources at z &#62; 5,” <i>Astrophysical
    Journal</i>, vol. 964. IOP Publishing, 2024.
  ista: Greene JE, Labbe I, Goulding AD, Furtak LJ, Chemerynska I, Kokorev V, Dayal
    P, Volonteri M, Williams CC, Wang B, Setton DJ, Burgasser AJ, Bezanson R, Atek
    H, Brammer G, Cutler SE, Feldmann R, Fujimoto S, Glazebrook K, De Graaff A, Khullar
    G, Leja J, Marchesini D, Maseda MV, Matthee JJ, Miller TB, Naidu RP, Nanayakkara
    T, Oesch PA, Pan R, Papovich C, Price SH, Van Dokkum P, Weaver JR, Whitaker KE,
    Zitrin A. 2024. UNCOVER spectroscopy confirms the surprising ubiquity of active
    galactic nuclei in red sources at z &#62; 5. Astrophysical Journal. 964, 39.
  mla: Greene, Jenny E., et al. “UNCOVER Spectroscopy Confirms the Surprising Ubiquity
    of Active Galactic Nuclei in Red Sources at z &#62; 5.” <i>Astrophysical Journal</i>,
    vol. 964, 39, IOP Publishing, 2024, doi:<a href="https://doi.org/10.3847/1538-4357/ad1e5f">10.3847/1538-4357/ad1e5f</a>.
  short: J.E. Greene, I. Labbe, A.D. Goulding, L.J. Furtak, I. Chemerynska, V. Kokorev,
    P. Dayal, M. Volonteri, C.C. Williams, B. Wang, D.J. Setton, A.J. Burgasser, R.
    Bezanson, H. Atek, G. Brammer, S.E. Cutler, R. Feldmann, S. Fujimoto, K. Glazebrook,
    A. De Graaff, G. Khullar, J. Leja, D. Marchesini, M.V. Maseda, J.J. Matthee, T.B.
    Miller, R.P. Naidu, T. Nanayakkara, P.A. Oesch, R. Pan, C. Papovich, S.H. Price,
    P. Van Dokkum, J.R. Weaver, K.E. Whitaker, A. Zitrin, Astrophysical Journal 964
    (2024).
das_tickbox: '0'
date_created: 2024-03-24T23:00:59Z
date_published: 2024-03-01T00:00:00Z
date_updated: 2026-10-15T09:15:28Z
day: '01'
ddc:
- '550'
department:
- _id: JoMa
doi: 10.3847/1538-4357/ad1e5f
external_id:
  arxiv:
  - '2309.05714'
  isi:
  - '001184746500001'
file:
- access_level: open_access
  checksum: 389a880e176799d5c062ea7cb82d08c9
  content_type: application/pdf
  creator: dernst
  date_created: 2024-03-25T08:02:43Z
  date_updated: 2024-03-25T08:02:43Z
  file_id: '15176'
  file_name: 2024_AstrophysicalJourn_Greene.pdf
  file_size: 2700137
  relation: main_file
  success: 1
file_date_updated: 2024-03-25T08:02:43Z
fulldoi: https://doi.org/10.3847/1538-4357/ad1e5f
has_accepted_license: '1'
intvolume: '       964'
isi: 1
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
publication: Astrophysical Journal
publication_identifier:
  eissn:
  - 1538-4357
  issn:
  - 0004-637X
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
researchdata_availability: no
scopus_import: '1'
status: public
supplementarymaterial: no
title: UNCOVER spectroscopy confirms the surprising ubiquity of active galactic nuclei
  in red sources at z > 5
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 964
year: '2024'
...
---
DOAJ_listed: '1'
_id: '17234'
abstract:
- lang: eng
  text: The identification of red, apparently massive galaxies at z > 7 in early James
    Webb Space Telescope (JWST) photometry suggests a strongly accelerated time line
    compared to standard models of galaxy growth. A major uncertainty in the interpretation
    is whether the red colors are caused by evolved stellar populations, dust, or
    other effects such as emission lines or active galactic nuclei (AGNs). Here we
    show that three of the massive galaxy candidates at z = 6.7–8.4 have prominent
    Balmer breaks in JWST/NIRSpec spectroscopy from the RUBIES program. The Balmer
    breaks demonstrate unambiguously that stellar emission dominates at λrest = 0.4
    μm and require formation histories extending hundreds of millions of years into
    the past in galaxies only 600–800 Myr after the big bang. Two of the three galaxies
    also show broad Balmer lines, with Hβ FWHM > 2500 km s−1, suggesting that dust-reddened
    AGNs contribute to, or even dominate, the spectral energy distributions of these
    galaxies at λrest ≳ 0.6 μm. All three galaxies have relatively narrow [O iii]
    lines, seemingly ruling out a high-mass interpretation if the lines arise in dynamically
    relaxed, inclined disks. Yet the inferred masses also remain highly uncertain.
    We model the high-quality spectra using Prospector to decompose the continuum
    into stellar and AGN components and explore limiting cases in stellar/AGN contribution.
    This produces a wide range of possible stellar masses, spanning M⋆ ∼ 109−1011M⊙.
    Nevertheless, all fits suggest a very early and rapid formation, most of which
    follow with a truncation in star formation. Potential origins and evolutionary
    tracks for these objects are discussed, from the cores of massive galaxies to
    low-mass galaxies with overmassive black holes. Intriguingly, we find all of these
    explanations to be incomplete; deeper and redder data are needed to understand
    the physics of these systems.
acknowledgement: "We thank the anonymous referee for the helpful comments. B.W. and
  J.L. acknowledge support from JWST-GO04233.009-A. The Cosmic Dawn Center is funded
  by the Danish National Research Foundation (DNRF) under grant No. 140. This research
  was supported by the International Space Science Institute (ISSI) in Bern, through
  ISSI International Team project No. 562 (First Light at Cosmic Dawn: Exploiting
  the James Webb Space Telescope Revolution). This work is based in part on observations
  made with the NASA/ESA/CSA James Webb Space Telescope. The data were obtained from
  the Mikulski Archive for Space Telescopes at the Space Telescope Science Institute,
  which is operated by the Association of Universities for Research in Astronomy,
  Inc., under NASA contract NAS 5-03127 for JWST. The JWST data presented in this
  Letter were obtained from the Mikulski Archive for Space Telescopes (MAST) at the
  Space Telescope Science Institute. The specific observations analyzed can be accessed
  via doi:10.17909/3a4n-9p88. Computations for this research were performed on the
  Pennsylvania State University’s Institute for Computational and Data Sciences’ Roar
  supercomputer. This publication made use of the NASA Astrophysical Data System for
  bibliographic information. \r\nFacilities: HST (ACS, WFC3), JWST (NIRCam, NIRSpec).
  Software: Astropy (Astropy Collaboration et al. 2013, 2018, 2022), dynesty (Speagle
  2020), EAzY (Brammer et al. 2008),\r\nemcee (Foreman-Mackey et al. 2013), Matplotlib
  (Hunter 2007), msaexp (Brammer 2023b), msafit (de Graaff et al. 2024a), NumPy (Harris
  et al. 2020), Prospector (Johnson et al. 2021), Python-FSPS (Johnson et al. 2023)."
article_number: L13
article_processing_charge: Yes
article_type: original
arxiv: 1
author:
- first_name: Bingjie
  full_name: Wang, Bingjie
  last_name: Wang
- first_name: Joel
  full_name: Leja, Joel
  last_name: Leja
- first_name: Anna
  full_name: De Graaff, Anna
  last_name: De Graaff
- first_name: Gabriel B.
  full_name: Brammer, Gabriel B.
  last_name: Brammer
- first_name: Andrea
  full_name: Weibel, Andrea
  last_name: Weibel
- first_name: Pieter
  full_name: Van Dokkum, Pieter
  last_name: Van Dokkum
- first_name: Josephine F.W.
  full_name: Baggen, Josephine F.W.
  last_name: Baggen
- first_name: Katherine A.
  full_name: Suess, Katherine A.
  last_name: Suess
- first_name: Jenny E.
  full_name: Greene, Jenny E.
  last_name: Greene
- first_name: Rachel
  full_name: Bezanson, Rachel
  last_name: Bezanson
- first_name: Nikko J.
  full_name: Cleri, Nikko J.
  last_name: Cleri
- first_name: Michaela
  full_name: Hirschmann, Michaela
  last_name: Hirschmann
- first_name: Ivo
  full_name: Labbé, Ivo
  last_name: Labbé
- first_name: Jorryt J
  full_name: Matthee, Jorryt J
  id: 7439a258-f3c0-11ec-9501-9df22fe06720
  last_name: Matthee
  orcid: 0000-0003-2871-127X
- first_name: Ian
  full_name: Mcconachie, Ian
  last_name: Mcconachie
- first_name: Rohan P.
  full_name: Naidu, Rohan P.
  last_name: Naidu
- first_name: Erica
  full_name: Nelson, Erica
  last_name: Nelson
- first_name: Pascal A.
  full_name: Oesch, Pascal A.
  last_name: Oesch
- first_name: David J.
  full_name: Setton, David J.
  last_name: Setton
- first_name: Christina C.
  full_name: Williams, Christina C.
  last_name: Williams
citation:
  ama: 'Wang B, Leja J, De Graaff A, et al. RUBIES: Evolved stellar populations with
    extended formation histories at z ∼ 7-8 in candidate massive galaxies identified
    with JWST/NIRSpec. <i>Astrophysical Journal Letters</i>. 2024;969(1). doi:<a href="https://doi.org/10.3847/2041-8213/ad55f7">10.3847/2041-8213/ad55f7</a>'
  apa: 'Wang, B., Leja, J., De Graaff, A., Brammer, G. B., Weibel, A., Van Dokkum,
    P., … Williams, C. C. (2024). RUBIES: Evolved stellar populations with extended
    formation histories at z ∼ 7-8 in candidate massive galaxies identified with JWST/NIRSpec.
    <i>Astrophysical Journal Letters</i>. IOP Publishing. <a href="https://doi.org/10.3847/2041-8213/ad55f7">https://doi.org/10.3847/2041-8213/ad55f7</a>'
  chicago: 'Wang, Bingjie, Joel Leja, Anna De Graaff, Gabriel B. Brammer, Andrea Weibel,
    Pieter Van Dokkum, Josephine F.W. Baggen, et al. “RUBIES: Evolved Stellar Populations
    with Extended Formation Histories at z ∼ 7-8 in Candidate Massive Galaxies Identified
    with JWST/NIRSpec.” <i>Astrophysical Journal Letters</i>. IOP Publishing, 2024.
    <a href="https://doi.org/10.3847/2041-8213/ad55f7">https://doi.org/10.3847/2041-8213/ad55f7</a>.'
  ieee: 'B. Wang <i>et al.</i>, “RUBIES: Evolved stellar populations with extended
    formation histories at z ∼ 7-8 in candidate massive galaxies identified with JWST/NIRSpec,”
    <i>Astrophysical Journal Letters</i>, vol. 969, no. 1. IOP Publishing, 2024.'
  ista: 'Wang B, Leja J, De Graaff A, Brammer GB, Weibel A, Van Dokkum P, Baggen JFW,
    Suess KA, Greene JE, Bezanson R, Cleri NJ, Hirschmann M, Labbé I, Matthee JJ,
    Mcconachie I, Naidu RP, Nelson E, Oesch PA, Setton DJ, Williams CC. 2024. RUBIES:
    Evolved stellar populations with extended formation histories at z ∼ 7-8 in candidate
    massive galaxies identified with JWST/NIRSpec. Astrophysical Journal Letters.
    969(1), L13.'
  mla: 'Wang, Bingjie, et al. “RUBIES: Evolved Stellar Populations with Extended Formation
    Histories at z ∼ 7-8 in Candidate Massive Galaxies Identified with JWST/NIRSpec.”
    <i>Astrophysical Journal Letters</i>, vol. 969, no. 1, L13, IOP Publishing, 2024,
    doi:<a href="https://doi.org/10.3847/2041-8213/ad55f7">10.3847/2041-8213/ad55f7</a>.'
  short: B. Wang, J. Leja, A. De Graaff, G.B. Brammer, A. Weibel, P. Van Dokkum, J.F.W.
    Baggen, K.A. Suess, J.E. Greene, R. Bezanson, N.J. Cleri, M. Hirschmann, I. Labbé,
    J.J. Matthee, I. Mcconachie, R.P. Naidu, E. Nelson, P.A. Oesch, D.J. Setton, C.C.
    Williams, Astrophysical Journal Letters 969 (2024).
das_tickbox: '0'
date_created: 2024-07-14T22:01:11Z
date_published: 2024-07-01T00:00:00Z
date_updated: 2026-10-15T09:10:55Z
day: '01'
ddc:
- '520'
department:
- _id: JoMa
doi: 10.3847/2041-8213/ad55f7
external_id:
  arxiv:
  - '2405.01473'
  isi:
  - '001257903200001'
file:
- access_level: open_access
  checksum: bb1a6725586df12e745d091b5778bb2b
  content_type: application/pdf
  creator: dernst
  date_created: 2024-07-16T06:24:29Z
  date_updated: 2024-07-16T06:24:29Z
  file_id: '17243'
  file_name: 2024_AstrophysicalJourn_Wang.pdf
  file_size: 3273303
  relation: main_file
  success: 1
file_date_updated: 2024-07-16T06:24:29Z
fulldoi: https://doi.org/10.3847/2041-8213/ad55f7
has_accepted_license: '1'
intvolume: '       969'
isi: 1
issue: '1'
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
publication: Astrophysical Journal Letters
publication_identifier:
  eissn:
  - 2041-8213
  issn:
  - 2041-8205
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
researchdata_availability: yes
scopus_import: '1'
status: public
supplementarymaterial: yes
title: 'RUBIES: Evolved stellar populations with extended formation histories at z
  ∼ 7-8 in candidate massive galaxies identified with JWST/NIRSpec'
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 969
year: '2024'
...
---
_id: '17889'
abstract:
- lang: eng
  text: The increasingly neutral intergalactic gas at z > 6 impacts the Lyman-α (Lyα)
    flux observed from galaxies. One luminous galaxy, COLA1, stands out because of
    its unique double-peaked Lyα line at z = 6.6, unseen in any simulation of reionization.
    Here, we present JWST/NIRCam wide-field slitless spectroscopy in a 21 arcmin2
    field centered on COLA1. We find 141 galaxies spectroscopically selected through
    the [O III] doublet at 5.35 < z < 6.95, with 40 of these sources showing Hβ. For
    COLA1, we additionally detect [O III]4363 as well as Hγ. We measure a systemic
    redshift of z = 6.5917 for COLA1, confirming the classical double-peak nature
    of the Lyα profile. This implies that it resides in a highly ionized bubble and
    that it is leaking ionizing photons with a high escape fraction of fesc(LyC) = 20–50%,
    making it a prime laboratory to study Lyman continuum escape in the Epoch of Reionization.
    COLA1 shows all the signs of a prolific ionizer with a Lyα escape fraction of
    81 ± 5%, Balmer decrement indicating no dust, a steep UV slope (βUV = −3.2 ± 0.4),
    and a star-formation surface density ≳10× that of typical galaxies at similar
    redshift. We detect five galaxies in COLA1’s close environment (Δz < 0.02). Exploiting
    the high spectroscopic completeness inherent to grism surveys, and using mock
    simulations that fully mimic the selection function, we show that the number of
    detected companions is very typical for a normal similarly UV-bright (MUV ∼ −21.3)
    galaxy – that is, the ionized bubble around COLA1 is unlikely to be due to an
    excessively large over-density. Instead, the measured ionizing properties suggest
    that COLA1 by itself might be powering the bubble required to explain its double-peaked
    Lyα profile (Rion ≈ 0.7 pMpc), with only minor contributions from detected neighbors
    (−19.5 ≲ MUV ≲ −17.5).
acknowledgement: 'The authors acknowledge the financial support from the MICIU with
  funding from the European Union NextGenerationEU and Generalitat Valenciana in the
  call Programa de Planes Complementarios de I+D+i (PRTR 2022) Project (VAL-JPAS),
  reference ASFAE/2022/025. This work has been funded by project PID2019-109592GBI00/AEI/10.13039/501100011033
  from the Spanish Ministerio de Ciencia e Innovación (MCIN)-Agencia Estatal de Investigación,
  by the Project of Excellence Prometeo/2020/085 from the Conselleria d’Innovació
  Universitats, Ciència i Societat Digital de la Generalitat Valenciana. It has also
  be funded by the Project of Excellence Prometeo/2020/085 from the Conselleria d’Educació,
  Universitats, i Ocupació de la Generalitat Valenciana. Funded by the European Union
  (ERC, AGENTS, 101076224). Views and opinions expressed are however those of the
  author(s) only and do not necessarily reflect those of the European Union or the
  European Research Council. Neither the European Union nor the granting authority
  can be held responsible for them. ST acknowledges support by the Royal Society Research
  Grant G125142. AH acknowledges support by the VILLUM FONDEN under grant 37459. The
  Cosmic Dawn Center (DAWN) is funded by the Danish National Research Foundation under
  grant DNRF140. We acknowledge funding from JWST program GO-1933. Support for this
  work was provided by NASA through the NASA Hubble Fellowship grant HST-HF2-51515.001-A
  awarded by the Space Telescope Science Institute, which is operated by the Association
  of Universities for Research in Astronomy, Incorporated, under NASA contract NAS5-26555.
  This work has received funding from the Swiss State Secretariat for Education, Research
  and Innovation (SERI) under contract number MB22.00072, as well as from the Swiss
  National Science Foundation (SNSF) through project grant 200020_207349. This work
  is based on observations made with the NASA/ESA/CSA James Webb Space Telescope.
  The data were obtained from the Mikulski Archive for Space Telescopes at the Space
  Telescope Science Institute, which is operated by the Association of Universities
  for Research in Astronomy, Inc., under NASA contract NAS 5-03127 for JWST. These
  observations are associated with program # 1933. The specific observations analyzed
  can be accessed via https://doi.org/10.17909/s9ht-7n34.'
article_number: A44
article_processing_charge: Yes (in subscription journal)
article_type: original
arxiv: 1
author:
- first_name: Alberto
  full_name: Torralba-Torregrosa, Alberto
  last_name: Torralba-Torregrosa
- first_name: Jorryt J
  full_name: Matthee, Jorryt J
  id: 7439a258-f3c0-11ec-9501-9df22fe06720
  last_name: Matthee
  orcid: 0000-0003-2871-127X
- first_name: Rohan P.
  full_name: Naidu, Rohan P.
  last_name: Naidu
- first_name: Ruari
  full_name: Mackenzie, Ruari
  last_name: Mackenzie
- first_name: Gabriele
  full_name: Pezzulli, Gabriele
  last_name: Pezzulli
- first_name: Anne
  full_name: Hutter, Anne
  last_name: Hutter
- first_name: Pablo
  full_name: Arnalte-Mur, Pablo
  last_name: Arnalte-Mur
- first_name: Siddhartha
  full_name: Gurung-López, Siddhartha
  last_name: Gurung-López
- first_name: Sandro
  full_name: Tacchella, Sandro
  last_name: Tacchella
- first_name: Pascal
  full_name: Oesch, Pascal
  last_name: Oesch
- first_name: Daichi
  full_name: Kashino, Daichi
  last_name: Kashino
- first_name: Charlie
  full_name: Conroy, Charlie
  last_name: Conroy
- first_name: David
  full_name: Sobral, David
  last_name: Sobral
citation:
  ama: 'Torralba-Torregrosa A, Matthee JJ, Naidu RP, et al. Anatomy of an ionized
    bubble: NIRCam grism spectroscopy of the z = 6.6 double-peaked Lyman- α emitter
    COLA1 and its environment. <i>Astronomy &#38; Astrophysics</i>. 2024;689. doi:<a
    href="https://doi.org/10.1051/0004-6361/202450318">10.1051/0004-6361/202450318</a>'
  apa: 'Torralba-Torregrosa, A., Matthee, J. J., Naidu, R. P., Mackenzie, R., Pezzulli,
    G., Hutter, A., … Sobral, D. (2024). Anatomy of an ionized bubble: NIRCam grism
    spectroscopy of the z = 6.6 double-peaked Lyman- α emitter COLA1 and its environment.
    <i>Astronomy &#38; Astrophysics</i>. EDP Sciences. <a href="https://doi.org/10.1051/0004-6361/202450318">https://doi.org/10.1051/0004-6361/202450318</a>'
  chicago: 'Torralba-Torregrosa, Alberto, Jorryt J Matthee, Rohan P. Naidu, Ruari
    Mackenzie, Gabriele Pezzulli, Anne Hutter, Pablo Arnalte-Mur, et al. “Anatomy
    of an Ionized Bubble: NIRCam Grism Spectroscopy of the z = 6.6 Double-Peaked Lyman-
    α Emitter COLA1 and Its Environment.” <i>Astronomy &#38; Astrophysics</i>. EDP
    Sciences, 2024. <a href="https://doi.org/10.1051/0004-6361/202450318">https://doi.org/10.1051/0004-6361/202450318</a>.'
  ieee: 'A. Torralba-Torregrosa <i>et al.</i>, “Anatomy of an ionized bubble: NIRCam
    grism spectroscopy of the z = 6.6 double-peaked Lyman- α emitter COLA1 and its
    environment,” <i>Astronomy &#38; Astrophysics</i>, vol. 689. EDP Sciences, 2024.'
  ista: 'Torralba-Torregrosa A, Matthee JJ, Naidu RP, Mackenzie R, Pezzulli G, Hutter
    A, Arnalte-Mur P, Gurung-López S, Tacchella S, Oesch P, Kashino D, Conroy C, Sobral
    D. 2024. Anatomy of an ionized bubble: NIRCam grism spectroscopy of the z = 6.6
    double-peaked Lyman- α emitter COLA1 and its environment. Astronomy &#38; Astrophysics.
    689, A44.'
  mla: 'Torralba-Torregrosa, Alberto, et al. “Anatomy of an Ionized Bubble: NIRCam
    Grism Spectroscopy of the z = 6.6 Double-Peaked Lyman- α Emitter COLA1 and Its
    Environment.” <i>Astronomy &#38; Astrophysics</i>, vol. 689, A44, EDP Sciences,
    2024, doi:<a href="https://doi.org/10.1051/0004-6361/202450318">10.1051/0004-6361/202450318</a>.'
  short: A. Torralba-Torregrosa, J.J. Matthee, R.P. Naidu, R. Mackenzie, G. Pezzulli,
    A. Hutter, P. Arnalte-Mur, S. Gurung-López, S. Tacchella, P. Oesch, D. Kashino,
    C. Conroy, D. Sobral, Astronomy &#38; Astrophysics 689 (2024).
das_tickbox: '0'
date_created: 2024-09-08T22:01:11Z
date_published: 2024-09-01T00:00:00Z
date_updated: 2026-10-15T09:15:07Z
day: '01'
ddc:
- '520'
department:
- _id: JoMa
doi: 10.1051/0004-6361/202450318
external_id:
  arxiv:
  - '2404.10040'
  isi:
  - '001303205700016'
file:
- access_level: open_access
  checksum: a6c0df287c75e8929db9f42badeac859
  content_type: application/pdf
  creator: dernst
  date_created: 2024-09-11T07:35:00Z
  date_updated: 2024-09-11T07:35:00Z
  file_id: '18055'
  file_name: 2024_AstronomyAstrophysics_TorralbaTorregrosa.pdf
  file_size: 6225413
  relation: main_file
  success: 1
file_date_updated: 2024-09-11T07:35:00Z
fulldoi: https://doi.org/10.1051/0004-6361/202450318
has_accepted_license: '1'
intvolume: '       689'
isi: 1
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
publication: Astronomy & Astrophysics
publication_identifier:
  eissn:
  - 1432-0746
  issn:
  - 0004-6361
publication_status: published
publisher: EDP Sciences
quality_controlled: '1'
researchdata_availability: no
scopus_import: '1'
status: public
supplementarymaterial: yes
title: 'Anatomy of an ionized bubble: NIRCam grism spectroscopy of the z = 6.6 double-peaked
  Lyman- α emitter COLA1 and its environment'
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 689
year: '2024'
...
---
OA_place: repository
OA_type: green
_id: '17090'
abstract:
- lang: eng
  text: Primordial neutral atomic gas, mostly composed of hydrogen, is the raw material
    for star formation in galaxies. However, there are few direct constraints on the
    amount of neutral atomic hydrogen (H i) in galaxies at early cosmic times. We
    analyzed James Webb Space Telescope (JWST) near-infrared spectroscopy of distant
    galaxies, at redshifts ≳8. From a sample of 12 galaxies, we identified three that
    show strong damped Lyman-α absorption due to H i in their local surroundings.
    The galaxies are located at spectroscopic redshifts of 8.8, 10.2, and 11.4, corresponding
    to 400 to 600 million years after the Big Bang. They have H i column densities
    ≳1022 cm−2, which is an order of magnitude higher than expected for a fully neutral
    intergalactic medium, and constitute a gas-rich population of young star-forming
    galaxies.
acknowledgement: K.E.H. acknowledges support from Carlsberg Foundation Reintegration
  Fellowship grant CF21-0103. A.H. acknowledges support from the VILLUM FONDEN under
  grant 37459. C.A.M. acknowledges support from the VILLUM FONDEN under grant 37459
  and the Carlsberg Foundation under grant CF22-1322. N.R.T. was funded through Science
  and Technology Facilities Council (STFC) consolidated grant ST/W000857/1. R.P.N.
  acknowledges funding from JWST programs GO-1933 and GO-2279. R.P.N. was supported
  by the NASA Hubble Fellowship grant HST-HF2-51515.001-A awarded by the Space Telescope
  Science Institute, which is operated by the Association of Universities for Research
  in Astronomy under NASA contract NAS5-26555. P.A.O. received funding from the Swiss
  State Secretariat for Education, Research, and Innovation (SERI) under contract
  number MB22.00072 and from the Swiss National Science Foundation (SNSF) through
  project grant 200020_207349.
article_processing_charge: No
article_type: original
author:
- first_name: Kasper E.
  full_name: Heintz, Kasper E.
  last_name: Heintz
- first_name: Darach
  full_name: Watson, Darach
  last_name: Watson
- first_name: Gabriel
  full_name: Brammer, Gabriel
  last_name: Brammer
- first_name: Simone
  full_name: Vejlgaard, Simone
  last_name: Vejlgaard
- first_name: Anne
  full_name: Hutter, Anne
  last_name: Hutter
- first_name: Victoria B.
  full_name: Strait, Victoria B.
  last_name: Strait
- first_name: Jorryt J
  full_name: Matthee, Jorryt J
  id: 7439a258-f3c0-11ec-9501-9df22fe06720
  last_name: Matthee
  orcid: 0000-0003-2871-127X
- first_name: Pascal A.
  full_name: Oesch, Pascal A.
  last_name: Oesch
- first_name: Páll
  full_name: Jakobsson, Páll
  last_name: Jakobsson
- first_name: Nial R.
  full_name: Tanvir, Nial R.
  last_name: Tanvir
- first_name: Peter
  full_name: Laursen, Peter
  last_name: Laursen
- first_name: Rohan P.
  full_name: Naidu, Rohan P.
  last_name: Naidu
- first_name: Charlotte A.
  full_name: Mason, Charlotte A.
  last_name: Mason
- first_name: Meghana
  full_name: Killi, Meghana
  last_name: Killi
- first_name: Intae
  full_name: Jung, Intae
  last_name: Jung
- first_name: Tiger Yu Yang
  full_name: Hsiao, Tiger Yu Yang
  last_name: Hsiao
- first_name: Unknown
  full_name: Abdurro’Uf, Unknown
  last_name: Abdurro’Uf
- first_name: Dan
  full_name: Coe, Dan
  last_name: Coe
- first_name: Pablo Arrabal
  full_name: Haro, Pablo Arrabal
  last_name: Haro
- first_name: Steven L.
  full_name: Finkelstein, Steven L.
  last_name: Finkelstein
- first_name: Sune
  full_name: Toft, Sune
  last_name: Toft
citation:
  ama: Heintz KE, Watson D, Brammer G, et al. Strong damped Lyman-a absorption in
    young star-forming galaxies at redshifts 9 to 11. <i>Science</i>. 2024;384(6698):890-894.
    doi:<a href="https://doi.org/10.1126/science.adj0343">10.1126/science.adj0343</a>
  apa: Heintz, K. E., Watson, D., Brammer, G., Vejlgaard, S., Hutter, A., Strait,
    V. B., … Toft, S. (2024). Strong damped Lyman-a absorption in young star-forming
    galaxies at redshifts 9 to 11. <i>Science</i>. AAAS. <a href="https://doi.org/10.1126/science.adj0343">https://doi.org/10.1126/science.adj0343</a>
  chicago: Heintz, Kasper E., Darach Watson, Gabriel Brammer, Simone Vejlgaard, Anne
    Hutter, Victoria B. Strait, Jorryt J Matthee, et al. “Strong Damped Lyman-a Absorption
    in Young Star-Forming Galaxies at Redshifts 9 to 11.” <i>Science</i>. AAAS, 2024.
    <a href="https://doi.org/10.1126/science.adj0343">https://doi.org/10.1126/science.adj0343</a>.
  ieee: K. E. Heintz <i>et al.</i>, “Strong damped Lyman-a absorption in young star-forming
    galaxies at redshifts 9 to 11,” <i>Science</i>, vol. 384, no. 6698. AAAS, pp.
    890–894, 2024.
  ista: Heintz KE, Watson D, Brammer G, Vejlgaard S, Hutter A, Strait VB, Matthee
    JJ, Oesch PA, Jakobsson P, Tanvir NR, Laursen P, Naidu RP, Mason CA, Killi M,
    Jung I, Hsiao TYY, Abdurro’Uf U, Coe D, Haro PA, Finkelstein SL, Toft S. 2024.
    Strong damped Lyman-a absorption in young star-forming galaxies at redshifts 9
    to 11. Science. 384(6698), 890–894.
  mla: Heintz, Kasper E., et al. “Strong Damped Lyman-a Absorption in Young Star-Forming
    Galaxies at Redshifts 9 to 11.” <i>Science</i>, vol. 384, no. 6698, AAAS, 2024,
    pp. 890–94, doi:<a href="https://doi.org/10.1126/science.adj0343">10.1126/science.adj0343</a>.
  short: K.E. Heintz, D. Watson, G. Brammer, S. Vejlgaard, A. Hutter, V.B. Strait,
    J.J. Matthee, P.A. Oesch, P. Jakobsson, N.R. Tanvir, P. Laursen, R.P. Naidu, C.A.
    Mason, M. Killi, I. Jung, T.Y.Y. Hsiao, U. Abdurro’Uf, D. Coe, P.A. Haro, S.L.
    Finkelstein, S. Toft, Science 384 (2024) 890–894.
das_tickbox: '1'
dataavailabilitystatement: 'The JWST spectroscopic data are available at the Mikulski
  Archive for Space Telescopes (MAST) (https://mast.stsci.edu) under program IDs DD-2750
  and GO-1433 for the three selected galaxies; the IDs for the other galaxies we searched
  are listed in table S1. Our data analysis codes are archived at Zenodo (19, 20).
  The reduced spectroscopic data are available through the DAWN JWST Archive (DJA):
  https://s3.amazonaws.com/msaexp-nirspec/extractions/nirspec_graded.html under file
  names ceers-ddt-v1_prism-clear_2750_28.spec.fits for CEERS-43833, macsj0647-v1_prism-clear_1433_3593.spec.fits
  for MACS0647-JD, and ceers-ddt-v1_prism-clear_2750_1.spec.fits for CEERS-16943.
  The photometry is available at https://dawn-cph.github.io/dja/imaging/v7/. Our derived
  physical parameters are provided in Table 1, and measured line fluxes are provided
  in table S2.'
date_created: 2024-06-02T22:00:56Z
date_published: 2024-05-24T00:00:00Z
date_updated: 2026-10-15T09:10:20Z
day: '24'
department:
- _id: JoMa
doi: 10.1126/science.adj0343
external_id:
  isi:
  - '001230029500001'
  pmid:
  - '38781391'
fulldoi: https://doi.org/10.1126/science.adj0343
intvolume: '       384'
isi: 1
issue: '6698'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://figshare.com/articles/journal_contribution/Strong_damped_Lyman-_absorption_in_young_star-forming_galaxies_at_redshifts_9_to_11/26069122?file=47174584
month: '05'
oa: 1
oa_version: Submitted Version
page: 890-894
pmid: 1
publication: Science
publication_identifier:
  eissn:
  - 1095-9203
  issn:
  - 0036-8075
publication_status: published
publisher: AAAS
quality_controlled: '1'
researchdata_availability: yes
scopus_import: '1'
status: public
supplementarymaterial: yes
title: Strong damped Lyman-a absorption in young star-forming galaxies at redshifts
  9 to 11
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 384
year: '2024'
...
---
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '15249'
abstract:
- lang: eng
  text: Observationally mapping the relation between galaxies and the intergalactic
    medium (IGM) is of key interest for studies of cosmic reionization. Diffuse hydrogen
    gas has typically been observed in H I Lyman-α (Lyα) absorption in the spectra
    of bright background quasars. However, it is important to extend these measurements
    to background galaxies as quasars become increasingly rare at high redshift and
    rarely probe closely separated sight lines. Here, we use deep integral field spectroscopy
    in the MUSE eXtremely Deep Field to demonstrate the measurement of the Lyα transmission
    at z ≈ 4 in absorption to a background galaxy at z = 4.77. The H I transmission
    is consistent with independent quasar sight lines at similar redshifts. Exploiting
    the high number of spectroscopic redshifts of faint galaxies (500 between z =
    4.0–4.7 within a radius of 8 arcmin) that are tracers of the density field, we
    show that Lyα transmission is inversely correlated with galaxy density, i.e. transparent
    regions in the Lyα forest mark underdense regions at z ≈ 4. Due to large-scale
    clustering, galaxies are surrounded by excess H I absorption over the cosmic mean
    out to 4 cMpc/h70. We also find that redshifts from the peak of the Lyα line are
    typically offset from the systemic redshift by +170 km s−1. This work extends
    results from z ≈ 2–3 to higher redshifts and demonstrates the power of deep integral
    field spectroscopy to simultaneously measure the ionization structure of the IGM
    and the large-scale density field in the early Universe.
acknowledgement: We thank the referee for constructive comments that helped improving
  the paper. Based on observations collected at the European Southern Observatory
  under ESO programme 1101.A-0127. Funded by the European Union (ERC, AGENTS, 101076224).
  Views and opinions expressed are however those of the author(s) only and do not
  necessarily reflect those of the European Union or the European Research Council.
  Neither the European Union nor the granting authority can be held responsible for
  them. GP acknowledges support from the Netherlands Research School for Astronomy
  (Nederlandse Onderzoekschool Voor Astronomie, NOVA). JB acknowledges financial support
  from the Fundação para a Ciência e a Tecnologia (FCT) through national funds PTDC/FIS-AST/4862/2020,
  work contract 2020.03379.CEECIND, and research grants UIDB/04434/2020 and UIDP/04434/2020.
  TU and LW acknowledge funding by the European Research Council through ERC-AdG SPECMAP-CGM,
  GA 101020943. TG is supported by the ERC Starting grant 757258 ‘TRIPLE’.
article_processing_charge: Yes
article_type: original
arxiv: 1
author:
- first_name: Jorryt J
  full_name: Matthee, Jorryt J
  id: 7439a258-f3c0-11ec-9501-9df22fe06720
  last_name: Matthee
  orcid: 0000-0003-2871-127X
- first_name: Christopher
  full_name: Golling, Christopher
  last_name: Golling
- first_name: Ruari
  full_name: Mackenzie, Ruari
  last_name: Mackenzie
- first_name: Gabriele
  full_name: Pezzulli, Gabriele
  last_name: Pezzulli
- first_name: Simon
  full_name: Lilly, Simon
  last_name: Lilly
- first_name: Joop
  full_name: Schaye, Joop
  last_name: Schaye
- first_name: Roland
  full_name: Bacon, Roland
  last_name: Bacon
- first_name: Haruka
  full_name: Kusakabe, Haruka
  last_name: Kusakabe
- first_name: Tanya
  full_name: Urrutia, Tanya
  last_name: Urrutia
- first_name: Leindert
  full_name: Boogaard, Leindert
  last_name: Boogaard
- first_name: Jarle
  full_name: Brinchmann, Jarle
  last_name: Brinchmann
- first_name: Michael V.
  full_name: Maseda, Michael V.
  last_name: Maseda
- first_name: Thibault
  full_name: Garel, Thibault
  last_name: Garel
- first_name: Nicolas F.
  full_name: Bouché, Nicolas F.
  last_name: Bouché
- first_name: Lutz
  full_name: Wisotzki, Lutz
  last_name: Wisotzki
citation:
  ama: Matthee JJ, Golling C, Mackenzie R, et al. Large-scale excess H I absorption
    around z ≈ 4 galaxies detected in a background galaxy spectrum in the MUSE eXtremely
    deep field. <i>Monthly Notices of the Royal Astronomical Society</i>. 2024;529(3):2794-2806.
    doi:<a href="https://doi.org/10.1093/mnras/stae673">10.1093/mnras/stae673</a>
  apa: Matthee, J. J., Golling, C., Mackenzie, R., Pezzulli, G., Lilly, S., Schaye,
    J., … Wisotzki, L. (2024). Large-scale excess H I absorption around z ≈ 4 galaxies
    detected in a background galaxy spectrum in the MUSE eXtremely deep field. <i>Monthly
    Notices of the Royal Astronomical Society</i>. Oxford University Press. <a href="https://doi.org/10.1093/mnras/stae673">https://doi.org/10.1093/mnras/stae673</a>
  chicago: Matthee, Jorryt J, Christopher Golling, Ruari Mackenzie, Gabriele Pezzulli,
    Simon Lilly, Joop Schaye, Roland Bacon, et al. “Large-Scale Excess H I Absorption
    around z ≈ 4 Galaxies Detected in a Background Galaxy Spectrum in the MUSE EXtremely
    Deep Field.” <i>Monthly Notices of the Royal Astronomical Society</i>. Oxford
    University Press, 2024. <a href="https://doi.org/10.1093/mnras/stae673">https://doi.org/10.1093/mnras/stae673</a>.
  ieee: J. J. Matthee <i>et al.</i>, “Large-scale excess H I absorption around z ≈
    4 galaxies detected in a background galaxy spectrum in the MUSE eXtremely deep
    field,” <i>Monthly Notices of the Royal Astronomical Society</i>, vol. 529, no.
    3. Oxford University Press, pp. 2794–2806, 2024.
  ista: Matthee JJ, Golling C, Mackenzie R, Pezzulli G, Lilly S, Schaye J, Bacon R,
    Kusakabe H, Urrutia T, Boogaard L, Brinchmann J, Maseda MV, Garel T, Bouché NF,
    Wisotzki L. 2024. Large-scale excess H I absorption around z ≈ 4 galaxies detected
    in a background galaxy spectrum in the MUSE eXtremely deep field. Monthly Notices
    of the Royal Astronomical Society. 529(3), 2794–2806.
  mla: Matthee, Jorryt J., et al. “Large-Scale Excess H I Absorption around z ≈ 4
    Galaxies Detected in a Background Galaxy Spectrum in the MUSE EXtremely Deep Field.”
    <i>Monthly Notices of the Royal Astronomical Society</i>, vol. 529, no. 3, Oxford
    University Press, 2024, pp. 2794–806, doi:<a href="https://doi.org/10.1093/mnras/stae673">10.1093/mnras/stae673</a>.
  short: J.J. Matthee, C. Golling, R. Mackenzie, G. Pezzulli, S. Lilly, J. Schaye,
    R. Bacon, H. Kusakabe, T. Urrutia, L. Boogaard, J. Brinchmann, M.V. Maseda, T.
    Garel, N.F. Bouché, L. Wisotzki, Monthly Notices of the Royal Astronomical Society
    529 (2024) 2794–2806.
corr_author: '1'
das_tickbox: '1'
dataavailabilitystatement: The MUSE data in the UDF-MXDF region underlying this work
  is available through the website https://amused.univ-lyon1.fr/. The catalogue of
  galaxies in the MUSE Wide region is available through https://musewide.aip.de/.
  The transmission spectrum measured in this paper will be available online through
  the publisher.
date_created: 2024-03-31T22:01:12Z
date_published: 2024-04-01T00:00:00Z
date_updated: 2026-10-15T09:19:25Z
day: '01'
ddc:
- '520'
department:
- _id: JoMa
doi: 10.1093/mnras/stae673
external_id:
  arxiv:
  - '2305.15346'
  isi:
  - '001188770300019'
file:
- access_level: open_access
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  creator: dernst
  date_created: 2024-04-02T08:42:17Z
  date_updated: 2024-04-02T08:42:17Z
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  file_size: 2626735
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  success: 1
file_date_updated: 2024-04-02T08:42:17Z
fulldoi: https://doi.org/10.1093/mnras/stae673
has_accepted_license: '1'
intvolume: '       529'
isi: 1
issue: '3'
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
page: 2794-2806
project:
- _id: bd9b2118-d553-11ed-ba76-db24564edfea
  grant_number: '101076224'
  name: Young galaxies as tracers and agents of cosmic reionization
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
  eissn:
  - 1365-2966
  issn:
  - 0035-8711
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
researchdata_availability: yes
scopus_import: '1'
status: public
supplementarymaterial: yes
title: Large-scale excess H I absorption around z ≈ 4 galaxies detected in a background
  galaxy spectrum in the MUSE eXtremely deep field
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 529
year: '2024'
...
---
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '18494'
abstract:
- lang: eng
  text: We expect luminous (M 1450 ≲ −26.5) high-redshift quasars to trace the highest-density
    peaks in the early Universe. Here, we present observations of four z ≳ 6 quasar
    fields using JWST/NIRCam in the imaging and wide-field slitless spectroscopy mode
    and report a wide range in the number of detected [O iii]-emitting galaxies in
    the quasars’ environments, ranging between a density enhancement of δ ≈ 65 within
    a 2 cMpc radius—one of the largest protoclusters during the Epoch of Reionization
    discovered to date—to a density contrast consistent with zero, indicating the
    presence of a UV-luminous quasar in a region comparable to the average density
    of the Universe. By measuring the two-point cross-correlation function of quasars
    and their surrounding galaxies, as well as the galaxy autocorrelation function,
    we infer a correlation length of quasars at 〈z〉 = 6.25 of r 0 QQ = 22.0 − 2.9
    + 3.0 cMpc h − 1 , while we obtain a correlation length of the [O iii]-emitting
    galaxies of r 0 GG = 4.1 ± 0.3 cMpc h − 1 . By comparing the correlation functions
    to dark-matter-only simulations we estimate the minimum mass of the quasars’ host
    dark matter halos to be log 10 ( M halo , min / M ⊙ ) = 12.43 − 0.15 + 0.13 (and
    log 10 ( M halo , min [ OIII ] / M ⊙ ) = 10.56 − 0.03 + 0.05 for the [O iii] emitters),
    indicating that (a) luminous quasars do not necessarily reside within the most
    overdense regions in the early Universe, and that (b) the UV-luminous duty cycle
    of quasar activity at these redshifts is f duty ≪ 1. Such short quasar activity
    timescales challenge our understanding of early supermassive black hole growth
    and provide evidence for highly dust-obscured growth phases or episodic, radiatively
    inefficient accretion rates.
acknowledgement: "The authors would like to thank the anonymous referee for the thoughtful
  comments, which significantly improved our manuscript, and Jan-Torge Schindler,
  Jiamu Huang, and Feige Wang for helpful discussions.\r\n\r\nJ.F.H. and E.P. acknowledge
  support from the European Research Council (ERC) under the European Unions Horizon
  2020 research and innovation program (grant agreement No. 885301). J.M. acknowledges
  support from the European Union (ERC, AGENTS, 101076224).\r\n\r\nThis work is based
  on observations made with the NASA/ESA/CSA James Webb Space Telescope. The JWST
  data presented in this article were obtained from the Mikulski Archive for Space
  Telescopes at the Space Telescope Science Institute, which is operated by the Association
  of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-03127
  for JWST. The specific observations analyzed are associated with program #1243 and
  can be accessed via doi:10.17909/m5mp-5v90.\r\n\r\nThis work used the DiRAC Memory
  Intensive service (Cosma8) at the University of Durham, which is part of the STFC
  DiRAC HPC Facility (www.dirac.ac.uk). Access to DiRAC resources was granted through
  a Directors Discretionary Time allocation in 2023/24, under the auspices of the
  UKRI-funded DiRAC Federation Project. The equipment was funded by BEIS capital funding
  via STFC capital grants ST/K00042X/1, ST/P002293/1, ST/R002371/1, and ST/S002502/1,
  Durham University and STFC operations grant ST/R000832/1. DiRAC is part of the National
  e-Infrastructure.\r\n\r\nWe thank the Instituto de Astrofisica de Andalucia (IAA-CSIC),
  Centro de Supercomputacion de Galicia (CESGA), and Spanish Academic and Research
  Network (RedIRIS) in Spain for hosting Uchuu DR1, DR2, and DR3 in the Skies & Universes
  site for cosmological simulations. The Uchuu simulations were carried out on the
  Aterui II supercomputer at the Center for Computational Astrophysics, CfCA, of the
  National Astronomical Observatory of Japan, and the K computer at the RIKEN Advanced
  Institute for Computational Science. The Uchuu Data Releases efforts have made use
  of the skunIAA_RedIRIS and skun6IAA computer facilities managed by the IAA-CSIC
  in Spain (MICINN EU-Feder grant EQC2018-004366-P)."
article_number: '275'
article_processing_charge: Yes
article_type: original
author:
- first_name: Anna Christina
  full_name: Eilers, Anna Christina
  last_name: Eilers
- first_name: Ruari
  full_name: Mackenzie, Ruari
  last_name: Mackenzie
- first_name: Elia
  full_name: Pizzati, Elia
  last_name: Pizzati
- first_name: Jorryt J
  full_name: Matthee, Jorryt J
  id: 7439a258-f3c0-11ec-9501-9df22fe06720
  last_name: Matthee
  orcid: 0000-0003-2871-127X
- first_name: Joseph F.
  full_name: Hennawi, Joseph F.
  last_name: Hennawi
- first_name: Haowen
  full_name: Zhang, Haowen
  last_name: Zhang
- first_name: Rongmon
  full_name: Bordoloi, Rongmon
  last_name: Bordoloi
- first_name: Daichi
  full_name: Kashino, Daichi
  last_name: Kashino
- first_name: Simon J.
  full_name: Lilly, Simon J.
  last_name: Lilly
- first_name: Rohan P.
  full_name: Naidu, Rohan P.
  last_name: Naidu
- first_name: Robert A.
  full_name: Simcoe, Robert A.
  last_name: Simcoe
- first_name: Minghao
  full_name: Yue, Minghao
  last_name: Yue
- first_name: Carlos S.
  full_name: Frenk, Carlos S.
  last_name: Frenk
- first_name: John C.
  full_name: Helly, John C.
  last_name: Helly
- first_name: Matthieu
  full_name: Schaller, Matthieu
  last_name: Schaller
- first_name: Joop
  full_name: Schaye, Joop
  last_name: Schaye
citation:
  ama: Eilers AC, Mackenzie R, Pizzati E, et al. EIGER. VI. The correlation function,
    host halo mass, and duty cycle of luminous quasars at z ≳ 6. <i>Astrophysical
    Journal</i>. 2024;974(2). doi:<a href="https://doi.org/10.3847/1538-4357/ad778b">10.3847/1538-4357/ad778b</a>
  apa: Eilers, A. C., Mackenzie, R., Pizzati, E., Matthee, J. J., Hennawi, J. F.,
    Zhang, H., … Schaye, J. (2024). EIGER. VI. The correlation function, host halo
    mass, and duty cycle of luminous quasars at z ≳ 6. <i>Astrophysical Journal</i>.
    IOP Publishing. <a href="https://doi.org/10.3847/1538-4357/ad778b">https://doi.org/10.3847/1538-4357/ad778b</a>
  chicago: Eilers, Anna Christina, Ruari Mackenzie, Elia Pizzati, Jorryt J Matthee,
    Joseph F. Hennawi, Haowen Zhang, Rongmon Bordoloi, et al. “EIGER. VI. The Correlation
    Function, Host Halo Mass, and Duty Cycle of Luminous Quasars at z ≳ 6.” <i>Astrophysical
    Journal</i>. IOP Publishing, 2024. <a href="https://doi.org/10.3847/1538-4357/ad778b">https://doi.org/10.3847/1538-4357/ad778b</a>.
  ieee: A. C. Eilers <i>et al.</i>, “EIGER. VI. The correlation function, host halo
    mass, and duty cycle of luminous quasars at z ≳ 6,” <i>Astrophysical Journal</i>,
    vol. 974, no. 2. IOP Publishing, 2024.
  ista: Eilers AC, Mackenzie R, Pizzati E, Matthee JJ, Hennawi JF, Zhang H, Bordoloi
    R, Kashino D, Lilly SJ, Naidu RP, Simcoe RA, Yue M, Frenk CS, Helly JC, Schaller
    M, Schaye J. 2024. EIGER. VI. The correlation function, host halo mass, and duty
    cycle of luminous quasars at z ≳ 6. Astrophysical Journal. 974(2), 275.
  mla: Eilers, Anna Christina, et al. “EIGER. VI. The Correlation Function, Host Halo
    Mass, and Duty Cycle of Luminous Quasars at z ≳ 6.” <i>Astrophysical Journal</i>,
    vol. 974, no. 2, 275, IOP Publishing, 2024, doi:<a href="https://doi.org/10.3847/1538-4357/ad778b">10.3847/1538-4357/ad778b</a>.
  short: A.C. Eilers, R. Mackenzie, E. Pizzati, J.J. Matthee, J.F. Hennawi, H. Zhang,
    R. Bordoloi, D. Kashino, S.J. Lilly, R.P. Naidu, R.A. Simcoe, M. Yue, C.S. Frenk,
    J.C. Helly, M. Schaller, J. Schaye, Astrophysical Journal 974 (2024).
das_tickbox: '0'
date_created: 2024-11-03T23:01:45Z
date_published: 2024-10-01T00:00:00Z
date_updated: 2026-10-15T09:27:42Z
day: '01'
ddc:
- '520'
department:
- _id: JoMa
doi: 10.3847/1538-4357/ad778b
external_id:
  isi:
  - '001338877100001'
file:
- access_level: open_access
  checksum: 1fcac3d11d01d91cf2bb4963b6e10b22
  content_type: application/pdf
  creator: dernst
  date_created: 2024-11-04T08:42:23Z
  date_updated: 2024-11-04T08:42:23Z
  file_id: '18496'
  file_name: 2024_AstrophysicalJour_Eilers.pdf
  file_size: 1042470
  relation: main_file
  success: 1
file_date_updated: 2024-11-04T08:42:23Z
fulldoi: https://doi.org/10.3847/1538-4357/ad778b
has_accepted_license: '1'
intvolume: '       974'
isi: 1
issue: '2'
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
project:
- _id: bd9b2118-d553-11ed-ba76-db24564edfea
  grant_number: '101076224'
  name: Young galaxies as tracers and agents of cosmic reionization
publication: Astrophysical Journal
publication_identifier:
  eissn:
  - 1538-4357
  issn:
  - 0004-637X
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
researchdata_availability: no
scopus_import: '1'
status: public
supplementarymaterial: no
title: EIGER. VI. The correlation function, host halo mass, and duty cycle of luminous
  quasars at z ≳ 6
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 974
year: '2024'
...
---
OA_place: publisher
OA_type: hybrid
_id: '18447'
abstract:
- lang: eng
  text: We present the first results on the spatial distribution of star formation
    in 454 star-forming galaxies just after the epoch of reionisation (4.8 < z < 6.5)
    using Hα emission-line maps and F444W imaging that traces the stellar continuum
    from the JWST FRESCO NIRCam Slitless Spectroscopy Survey. The Hα equivalent width
    profiles of star-forming galaxies across the main sequence at z ∼ 5.3 with stellar
    masses 6.8≤ log(M*/M⊙) < 11.1 increase with radius, which provides direct evidence
    for the inside-out growth of star-forming galaxies just after the epoch of reionisation.
    GALFIT was used to calculate half-light radii, Reff, and central surface densities
    within 1 kiloparsec, Σ1kpc of Hα and the continuum. At a fixed stellar mass of
    Log(M*/M⊙) = 9.5, Σ1kpc, Hα is 1.04 ± 0.05 times higher than Σ1kpc, C, Reff, Hα
    is 1.18 ± 0.03 times larger than Reff, C and both Reff measurements are smaller
    than 1 kiloparsec. These measurements suggest the rapid build-up of compact bulges
    via star formation just after the epoch of reionisation. By comparison to analogous
    work done at lower redshifts with Hubble Space Telescope WFC3 slitless spectroscopy
    as part of the 3D-HST (z ∼ 1) and CLEAR (z ∼ 0.5) surveys, we find that Reff(z)
    evolves at the same pace for Hα and the continuum, but Σ1kpc(z) evolves faster
    for Hα than the stellar continuum. As a function of the Hubble parameter, Reff, Hα/Reff,C = 1.1h(z)
    and Σ1 kpc, Hα/Σ1 kpc,C = h(z)1.3. These parametrisations suggest that the inside-out
    growth of the disk starts to dominate the inside-out growth of the bulge towards
    lower redshifts. This is supported by the redshift evolution in the EW(Hα) profiles
    from FRESCO, 3D-HST, and CLEAR at fixed stellar mass and when star-forming progenitors
    are traced, in which in EW(Hα) rapidly increases with radius within the half-light
    radius at z ∼ 5.3, but EW(Hα) increases only significantly with radius in the
    outer disk at z ∼ 0.5.
acknowledgement: "JM is grateful to the Cosmic Dawn Center for the DAWN Fellowship.
  JM thanks Adam Muzzin, Viola Gelli and Anne Hutter for useful discussions that led
  to improvements in the analysis presented in this paper. This work is based on observations
  made with the NASA/ESA/CSA James Webb Space Telescope. The raw data were obtained
  from the Mikulski Archive for\r\nSpace Telescopes at the Space Telescope Science
  Institute, which is operated by the Association of Universities for Research in
  Astronomy, Inc., under NASA contract NAS 5-03127 for JWST. These observations are
  associated with JWST Cycle 1 GO program #1895. Support for program JWST-GO-1895
  was provided by NASA through a grant from the Space Telescope Science Institute,
  which is operated by the Associations of Universities for Research in Astronomy,
  Incorporated, under NASA contract NAS5-26555. The Cosmic Dawn Center  DAWN) is funded
  by the Danish National Research Foundation under grant DNRF140.\r\nThis work has
  received funding from the Swiss State Secretariat for Education, Research and Innovation
  (SERI) under contract number MB22.00072, as well as from the Swiss National Science
  Foundation (SNSF) through project grant 200020_207349. RPN thanks the NASA Hubble
  Fellowshp Program for the Hubble Fellowship. DM acknowledges funding from JWST-GO-01895.013,
  provided through a grant from the STScI under NASA contract NAS5-03127."
article_number: A64
article_processing_charge: Yes (in subscription journal)
article_type: original
arxiv: 1
author:
- first_name: Jasleen
  full_name: Matharu, Jasleen
  last_name: Matharu
- first_name: Erica J.
  full_name: Nelson, Erica J.
  last_name: Nelson
- first_name: Gabriel
  full_name: Brammer, Gabriel
  last_name: Brammer
- first_name: Pascal A.
  full_name: Oesch, Pascal A.
  last_name: Oesch
- first_name: Natalie
  full_name: Allen, Natalie
  last_name: Allen
- first_name: Irene
  full_name: Shivaei, Irene
  last_name: Shivaei
- first_name: Rohan P.
  full_name: Naidu, Rohan P.
  last_name: Naidu
- first_name: John
  full_name: Chisholm, John
  last_name: Chisholm
- first_name: Alba
  full_name: Covelo-Paz, Alba
  last_name: Covelo-Paz
- first_name: Yoshinobu
  full_name: Fudamoto, Yoshinobu
  last_name: Fudamoto
- first_name: Emma
  full_name: Giovinazzo, Emma
  last_name: Giovinazzo
- first_name: Thomas
  full_name: Herard-Demanche, Thomas
  last_name: Herard-Demanche
- first_name: Josephine
  full_name: Kerutt, Josephine
  last_name: Kerutt
- first_name: Ivan
  full_name: Kramarenko, Ivan
  id: 9a9394cb-3200-11ee-973b-f5ba2a8b16e4
  last_name: Kramarenko
  orcid: 0000-0001-5346-6048
- first_name: Danilo
  full_name: Marchesini, Danilo
  last_name: Marchesini
- first_name: Romain A.
  full_name: Meyer, Romain A.
  last_name: Meyer
- first_name: Gonzalo
  full_name: Prieto-Lyon, Gonzalo
  last_name: Prieto-Lyon
- first_name: Naveen
  full_name: Reddy, Naveen
  last_name: Reddy
- first_name: Marko
  full_name: Shuntov, Marko
  last_name: Shuntov
- first_name: Andrea
  full_name: Weibel, Andrea
  last_name: Weibel
- first_name: Stijn
  full_name: Wuyts, Stijn
  last_name: Wuyts
- first_name: Mengyuan
  full_name: Xiao, Mengyuan
  last_name: Xiao
citation:
  ama: Matharu J, Nelson EJ, Brammer G, et al. A first look at spatially resolved
    star formation at 4.8 &#60; z &#60; 6.5 with JWST FRESCO NIRCam slitless spectroscopy.
    <i>Astronomy &#38; Astrophysics</i>. 2024;690. doi:<a href="https://doi.org/10.1051/0004-6361/202450522">10.1051/0004-6361/202450522</a>
  apa: Matharu, J., Nelson, E. J., Brammer, G., Oesch, P. A., Allen, N., Shivaei,
    I., … Xiao, M. (2024). A first look at spatially resolved star formation at 4.8
    &#60; z &#60; 6.5 with JWST FRESCO NIRCam slitless spectroscopy. <i>Astronomy
    &#38; Astrophysics</i>. EDP Sciences. <a href="https://doi.org/10.1051/0004-6361/202450522">https://doi.org/10.1051/0004-6361/202450522</a>
  chicago: Matharu, Jasleen, Erica J. Nelson, Gabriel Brammer, Pascal A. Oesch, Natalie
    Allen, Irene Shivaei, Rohan P. Naidu, et al. “A First Look at Spatially Resolved
    Star Formation at 4.8 &#60; z &#60; 6.5 with JWST FRESCO NIRCam Slitless Spectroscopy.”
    <i>Astronomy &#38; Astrophysics</i>. EDP Sciences, 2024. <a href="https://doi.org/10.1051/0004-6361/202450522">https://doi.org/10.1051/0004-6361/202450522</a>.
  ieee: J. Matharu <i>et al.</i>, “A first look at spatially resolved star formation
    at 4.8 &#60; z &#60; 6.5 with JWST FRESCO NIRCam slitless spectroscopy,” <i>Astronomy
    &#38; Astrophysics</i>, vol. 690. EDP Sciences, 2024.
  ista: Matharu J, Nelson EJ, Brammer G, Oesch PA, Allen N, Shivaei I, Naidu RP, Chisholm
    J, Covelo-Paz A, Fudamoto Y, Giovinazzo E, Herard-Demanche T, Kerutt J, Kramarenko
    I, Marchesini D, Meyer RA, Prieto-Lyon G, Reddy N, Shuntov M, Weibel A, Wuyts
    S, Xiao M. 2024. A first look at spatially resolved star formation at 4.8 &#60;
    z &#60; 6.5 with JWST FRESCO NIRCam slitless spectroscopy. Astronomy &#38; Astrophysics.
    690, A64.
  mla: Matharu, Jasleen, et al. “A First Look at Spatially Resolved Star Formation
    at 4.8 &#60; z &#60; 6.5 with JWST FRESCO NIRCam Slitless Spectroscopy.” <i>Astronomy
    &#38; Astrophysics</i>, vol. 690, A64, EDP Sciences, 2024, doi:<a href="https://doi.org/10.1051/0004-6361/202450522">10.1051/0004-6361/202450522</a>.
  short: J. Matharu, E.J. Nelson, G. Brammer, P.A. Oesch, N. Allen, I. Shivaei, R.P.
    Naidu, J. Chisholm, A. Covelo-Paz, Y. Fudamoto, E. Giovinazzo, T. Herard-Demanche,
    J. Kerutt, I. Kramarenko, D. Marchesini, R.A. Meyer, G. Prieto-Lyon, N. Reddy,
    M. Shuntov, A. Weibel, S. Wuyts, M. Xiao, Astronomy &#38; Astrophysics 690 (2024).
das_tickbox: '0'
date_created: 2024-10-20T22:02:06Z
date_published: 2024-10-01T00:00:00Z
date_updated: 2026-10-15T09:27:12Z
day: '01'
ddc:
- '520'
department:
- _id: JoMa
doi: 10.1051/0004-6361/202450522
external_id:
  arxiv:
  - '2404.17629'
  isi:
  - '001322237700004'
file:
- access_level: open_access
  checksum: 10ae78291aa9fa9a9e64724c42d91588
  content_type: application/pdf
  creator: dernst
  date_created: 2024-10-21T11:45:35Z
  date_updated: 2024-10-21T11:45:35Z
  file_id: '18457'
  file_name: 2024_AstronomyAstrophysics_Matharu.pdf
  file_size: 825494
  relation: main_file
  success: 1
file_date_updated: 2024-10-21T11:45:35Z
fulldoi: https://doi.org/10.1051/0004-6361/202450522
has_accepted_license: '1'
intvolume: '       690'
isi: 1
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
publication: Astronomy & Astrophysics
publication_identifier:
  eissn:
  - 1432-0746
  issn:
  - 0004-6361
publication_status: published
publisher: EDP Sciences
quality_controlled: '1'
researchdata_availability: no
scopus_import: '1'
status: public
supplementarymaterial: no
title: A first look at spatially resolved star formation at 4.8 < z < 6.5 with JWST
  FRESCO NIRCam slitless spectroscopy
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 690
year: '2024'
...
---
_id: '15336'
abstract:
- lang: eng
  text: Submillimeter surveys toward overdense regions in the early Universe are essential
    for uncovering the obscured star formation and the cold gas content of assembling
    galaxies within massive dark matter halos. In this work, we present deep ALMA
    mosaic observations covering an area of ∼2′×2′ around MUSE Quasar Nebula 01 (MQN01),
    one of the largest and brightest Ly-α emitting nebulae discovered thus far; it
    surrounds a radio-quiet quasar at z ≃ 3.25. Our observations target the 1.2 and
    the 3 mm dust continuum as well as the carbon monoxide CO(4–3) transition in galaxies
    in the vicinity of the quasar. We identify a robust sample of 11 CO-line-emitting
    galaxies (including a closely separated quasar companion) that lie within ±4000 km s−1
    of the quasar systemic redshift. A fraction of these objects were missed in previous
    deep rest-frame optical/UV surveys, which highlights the critical role of (sub)millimeter
    imaging. We also detect a total of 11 sources revealed in the dust continuum at
    1.2 mm; six of them have either high-fidelity spectroscopic redshift information
    from rest-frame UV metal absorptions or the CO(4–3) line that places them in the
    same narrow redshift range. A comparison of the CO luminosity function and 1.2
    mm number count density with those of the general fields points to a galaxy overdensity
    of δ > 10. We find evidence of a systematic flattening at the bright end of the
    CO luminosity function with respect to the trend measured in blank fields. Our
    findings reveal that galaxies in dense regions at z ∼ 3 are more massive and significantly
    richer in molecular gas than galaxies in fields, which enables a faster and accelerated
    assembly. This is the first in a series of studies aimed at characterizing one
    of the densest regions of the Universe found so far at z > 3.
acknowledgement: 'We thank the anonymous referee for the careful reading of the paper
  and useful suggestions which improved the manuscript. We thank Dr. Leindert Boogaard
  for sharing data and providing support in the data analysis process. This paper
  makes use of the following ALMA data: ADS/JAO.ALMA#2021.1.00793.S. ALMA is a partnership
  of ESO (representing its member states), NSF (USA) and NINS (Japan), together with
  NRC (Canada), MOST and ASIAA (Taiwan), and KASI (Republic of Korea), in cooperation
  with the Republic of Chile. The Joint ALMA Observatory is operated by ESO, AUI/NRAO
  and NAOJ. This project was supported by the European Research Council (ERC) Consolidator
  Grant 864361 (CosmicWeb) and by Fondazione Cariplo grant no. 2020-0902. M.M. was
  supported in part by grant HST-GO-17065. This research made use of Astropy (http://www.astropy.org),
  a community-developed core Python package for Astronomy (Astropy Collaboration 2013,
  2018), NumPy (Harris et al. 2020), SciPy (Virtanen et al. 2020), Matplotlib (Hunter
  2007), and Statsmodel (Seabold & Perktold 2010).'
article_number: A119
article_processing_charge: Yes (in subscription journal)
article_type: original
arxiv: 1
author:
- first_name: A.
  full_name: Pensabene, A.
  last_name: Pensabene
- first_name: S.
  full_name: Cantalupo, S.
  last_name: Cantalupo
- first_name: C.
  full_name: Cicone, C.
  last_name: Cicone
- first_name: R.
  full_name: Decarli, R.
  last_name: Decarli
- first_name: M.
  full_name: Galbiati, M.
  last_name: Galbiati
- first_name: M.
  full_name: Ginolfi, M.
  last_name: Ginolfi
- first_name: S.
  full_name: De Beer, S.
  last_name: De Beer
- first_name: M.
  full_name: Fossati, M.
  last_name: Fossati
- first_name: M.
  full_name: Fumagalli, M.
  last_name: Fumagalli
- first_name: T.
  full_name: Lazeyras, T.
  last_name: Lazeyras
- first_name: G.
  full_name: Pezzulli, G.
  last_name: Pezzulli
- first_name: A.
  full_name: Travascio, A.
  last_name: Travascio
- first_name: W.
  full_name: Wang, W.
  last_name: Wang
- first_name: Jorryt J
  full_name: Matthee, Jorryt J
  id: 7439a258-f3c0-11ec-9501-9df22fe06720
  last_name: Matthee
  orcid: 0000-0003-2871-127X
- first_name: M. V.
  full_name: Maseda, M. V.
  last_name: Maseda
citation:
  ama: 'Pensabene A, Cantalupo S, Cicone C, et al. ALMA survey of a massive node of
    the Cosmic Web at z ∼ 3: I. Discovery of a large overdensity of CO emitters. <i>Astronomy
    &#38; Astrophysics</i>. 2024;684. doi:<a href="https://doi.org/10.1051/0004-6361/202348659">10.1051/0004-6361/202348659</a>'
  apa: 'Pensabene, A., Cantalupo, S., Cicone, C., Decarli, R., Galbiati, M., Ginolfi,
    M., … Maseda, M. V. (2024). ALMA survey of a massive node of the Cosmic Web at
    z ∼ 3: I. Discovery of a large overdensity of CO emitters. <i>Astronomy &#38;
    Astrophysics</i>. EDP Sciences. <a href="https://doi.org/10.1051/0004-6361/202348659">https://doi.org/10.1051/0004-6361/202348659</a>'
  chicago: 'Pensabene, A., S. Cantalupo, C. Cicone, R. Decarli, M. Galbiati, M. Ginolfi,
    S. De Beer, et al. “ALMA Survey of a Massive Node of the Cosmic Web at z ∼ 3:
    I. Discovery of a Large Overdensity of CO Emitters.” <i>Astronomy &#38; Astrophysics</i>.
    EDP Sciences, 2024. <a href="https://doi.org/10.1051/0004-6361/202348659">https://doi.org/10.1051/0004-6361/202348659</a>.'
  ieee: 'A. Pensabene <i>et al.</i>, “ALMA survey of a massive node of the Cosmic
    Web at z ∼ 3: I. Discovery of a large overdensity of CO emitters,” <i>Astronomy
    &#38; Astrophysics</i>, vol. 684. EDP Sciences, 2024.'
  ista: 'Pensabene A, Cantalupo S, Cicone C, Decarli R, Galbiati M, Ginolfi M, De
    Beer S, Fossati M, Fumagalli M, Lazeyras T, Pezzulli G, Travascio A, Wang W, Matthee
    JJ, Maseda MV. 2024. ALMA survey of a massive node of the Cosmic Web at z ∼ 3:
    I. Discovery of a large overdensity of CO emitters. Astronomy &#38; Astrophysics.
    684, A119.'
  mla: 'Pensabene, A., et al. “ALMA Survey of a Massive Node of the Cosmic Web at
    z ∼ 3: I. Discovery of a Large Overdensity of CO Emitters.” <i>Astronomy &#38;
    Astrophysics</i>, vol. 684, A119, EDP Sciences, 2024, doi:<a href="https://doi.org/10.1051/0004-6361/202348659">10.1051/0004-6361/202348659</a>.'
  short: A. Pensabene, S. Cantalupo, C. Cicone, R. Decarli, M. Galbiati, M. Ginolfi,
    S. De Beer, M. Fossati, M. Fumagalli, T. Lazeyras, G. Pezzulli, A. Travascio,
    W. Wang, J.J. Matthee, M.V. Maseda, Astronomy &#38; Astrophysics 684 (2024).
das_tickbox: '0'
date_created: 2024-04-21T22:00:53Z
date_published: 2024-04-01T00:00:00Z
date_updated: 2026-10-15T09:19:58Z
day: '01'
ddc:
- '520'
department:
- _id: JoMa
doi: 10.1051/0004-6361/202348659
external_id:
  arxiv:
  - '2401.04765'
  isi:
  - '001199982500009'
file:
- access_level: open_access
  checksum: ab48775b6946cebfa27ddded5a68fdd2
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  creator: dernst
  date_created: 2024-04-23T06:59:18Z
  date_updated: 2024-04-23T06:59:18Z
  file_id: '15341'
  file_name: 2024_AstronomyAstrophysics_Pensabene.pdf
  file_size: 4410627
  relation: main_file
  success: 1
file_date_updated: 2024-04-23T06:59:18Z
fulldoi: https://doi.org/10.1051/0004-6361/202348659
has_accepted_license: '1'
intvolume: '       684'
isi: 1
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
publication: Astronomy & Astrophysics
publication_identifier:
  eissn:
  - 1432-0746
  issn:
  - 0004-6361
publication_status: published
publisher: EDP Sciences
quality_controlled: '1'
researchdata_availability: no
scopus_import: '1'
status: public
supplementarymaterial: no
title: 'ALMA survey of a massive node of the Cosmic Web at z ∼ 3: I. Discovery of
  a large overdensity of CO emitters'
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 684
year: '2024'
...
---
DOAJ_listed: '1'
_id: '18069'
abstract:
- lang: eng
  text: We present results from the JWST First Reionization Epoch Spectroscopically
    Complete Observations survey on the star-forming sequence (SFS) of galaxies at
    1.0 < z < 1.7, around the peak of the cosmic star formation history. Star formation
    rates (SFRs) are measured from the redshifted, relatively dust-insensitive Paschen-α
    emission line, and stellar mass measurements include the F444W (4.4 μm; rest-frame
    H) band. We find SFRs of galaxies with log(M*/M⊙) > 9.5 that are lower than found
    in many earlier studies by up to 0.6 dex, but in good agreement with recent results
    obtained with the Prospector fitting framework. The difference (log(SFR(Paα)-SFR(Prospector))
    is −0.09 ± 0.04 dex at 1010−11M⊙. We also measure the empirical relation between
    Paschen-α luminosity and rest-frame H-band magnitude and find that the scatter
    is only 0.04 dex lower than that of the SFR–M* relation and is much lower than
    the systematic differences among relations in the literature due to various methods
    of converting observed measurements to physical properties. We additionally identify
    examples of sources—that, with standard cutoffs via the UVJ diagram, would be
    deemed quiescent—with significant (log(sSFR)> −11 yr−1), typically extended, Paschen-α
    emission. Our results may be indicative of the potential unification of methods
    used to derive the SFS with careful selection of star-forming galaxies and independent
    SFR and stellar mass indicators.
acknowledgement: "The authors thank the anonymous referee whose comments and suggestions
  improved the quality of this work.\r\nThis work is based on observations made with
  the NASA/ESA/CSA James Webb Space Telescope. The data were obtained from the Mikulski
  Archive for Space Telescopes at the Space Telescope Science Institute, which is
  operated by the Association of Universities for Research in Astronomy, Inc., under
  NASA contract NAS 5-03127 for JWST. These observations are associated with program
  No. 1895.\r\nSupport for this work was provided by NASA through grant JWST-GO-01895
  awarded by the Space Telescope Science Institute, which is operated by the Association
  of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555.\r\nThis
  work has received funding from the Swiss State Secretariat for Education, Research,
  and Innovation (SERI) under contract No. MB22.00072, as well as from the Swiss National
  Science Foundation (SNSF) through project grant 200020_207349. The Cosmic Dawn Center
  (DAWN) is funded by the Danish National Research Foundation under grant No. 140.\r\nR.P.N.
  acknowledges funding from JWST programs GO-1933 and GO-2279. Support for this work
  was provided by NASA through the NASA Hubble Fellowship grant HST-HF2-51515.001-A
  awarded by the Space Telescope Science Institute, which is operated by the Association
  of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555\r\nCloud-based
  data processing and file storage for this work is provided by the AWS Cloud Credits
  for Research program.\r\nThis paper made use of several publicly available software
  packages. We thank the respective authors for sharing their work: IPython (Pérez
  & Granger 2007), matplotlib (Hunter 2007), seaborn (Waskom et al. 2018), NumPy (Harris
  et al. 2020), SciPy (Virtanen et al. 2020), jupyter (Kluyver et al. 2016), Astropy
  (Astropy Collaboration et al. 2013, 2018, 2022), grizli (Brammer 2018; Brammer et
  al. 2022), Prospector (Leja et al. 2019, 2017; Johnson et al. 2021), FSPS (Conroy
  et al. 2009a, 2010; Conroy & Gunn 2010a, 2010b; Foreman-Mackey et al. 2014), dynesty
  (Speagle 2020), EAZY (Brammer et al. 2008), Bagpipes (Carnall et al. 2018), and
  SExtractor (Bertin & Arnouts 1996)."
article_number: '156'
article_processing_charge: Yes
article_type: original
author:
- first_name: Chloe
  full_name: Neufeld, Chloe
  last_name: Neufeld
- first_name: Pieter
  full_name: Van Dokkum, Pieter
  last_name: Van Dokkum
- first_name: Yasmeen
  full_name: Asali, Yasmeen
  last_name: Asali
- first_name: Alba
  full_name: Covelo-Paz, Alba
  last_name: Covelo-Paz
- first_name: Joel
  full_name: Leja, Joel
  last_name: Leja
- first_name: Jamie
  full_name: Lin, Jamie
  last_name: Lin
- first_name: Jorryt J
  full_name: Matthee, Jorryt J
  id: 7439a258-f3c0-11ec-9501-9df22fe06720
  last_name: Matthee
  orcid: 0000-0003-2871-127X
- first_name: Pascal A.
  full_name: Oesch, Pascal A.
  last_name: Oesch
- first_name: Naveen A.
  full_name: Reddy, Naveen A.
  last_name: Reddy
- first_name: Irene
  full_name: Shivaei, Irene
  last_name: Shivaei
- first_name: Katherine E.
  full_name: Whitaker, Katherine E.
  last_name: Whitaker
- first_name: Stijn
  full_name: Wuyts, Stijn
  last_name: Wuyts
- first_name: Gabriel
  full_name: Brammer, Gabriel
  last_name: Brammer
- first_name: Danilo
  full_name: Marchesini, Danilo
  last_name: Marchesini
- first_name: Michael V.
  full_name: Maseda, Michael V.
  last_name: Maseda
- first_name: Rohan P.
  full_name: Naidu, Rohan P.
  last_name: Naidu
- first_name: Erica J.
  full_name: Nelson, Erica J.
  last_name: Nelson
- first_name: Anna
  full_name: Velichko, Anna
  last_name: Velichko
- first_name: Andrea
  full_name: Weibel, Andrea
  last_name: Weibel
- first_name: Mengyuan
  full_name: Xiao, Mengyuan
  last_name: Xiao
citation:
  ama: 'Neufeld C, Van Dokkum P, Asali Y, et al. FRESCO: The Paschen-α star-forming
    sequence at cosmic noon. <i>Astrophysical Journal</i>. 2024;972(2). doi:<a href="https://doi.org/10.3847/1538-4357/ad6158">10.3847/1538-4357/ad6158</a>'
  apa: 'Neufeld, C., Van Dokkum, P., Asali, Y., Covelo-Paz, A., Leja, J., Lin, J.,
    … Xiao, M. (2024). FRESCO: The Paschen-α star-forming sequence at cosmic noon.
    <i>Astrophysical Journal</i>. IOP Publishing. <a href="https://doi.org/10.3847/1538-4357/ad6158">https://doi.org/10.3847/1538-4357/ad6158</a>'
  chicago: 'Neufeld, Chloe, Pieter Van Dokkum, Yasmeen Asali, Alba Covelo-Paz, Joel
    Leja, Jamie Lin, Jorryt J Matthee, et al. “FRESCO: The Paschen-α Star-Forming
    Sequence at Cosmic Noon.” <i>Astrophysical Journal</i>. IOP Publishing, 2024.
    <a href="https://doi.org/10.3847/1538-4357/ad6158">https://doi.org/10.3847/1538-4357/ad6158</a>.'
  ieee: 'C. Neufeld <i>et al.</i>, “FRESCO: The Paschen-α star-forming sequence at
    cosmic noon,” <i>Astrophysical Journal</i>, vol. 972, no. 2. IOP Publishing, 2024.'
  ista: 'Neufeld C, Van Dokkum P, Asali Y, Covelo-Paz A, Leja J, Lin J, Matthee JJ,
    Oesch PA, Reddy NA, Shivaei I, Whitaker KE, Wuyts S, Brammer G, Marchesini D,
    Maseda MV, Naidu RP, Nelson EJ, Velichko A, Weibel A, Xiao M. 2024. FRESCO: The
    Paschen-α star-forming sequence at cosmic noon. Astrophysical Journal. 972(2),
    156.'
  mla: 'Neufeld, Chloe, et al. “FRESCO: The Paschen-α Star-Forming Sequence at Cosmic
    Noon.” <i>Astrophysical Journal</i>, vol. 972, no. 2, 156, IOP Publishing, 2024,
    doi:<a href="https://doi.org/10.3847/1538-4357/ad6158">10.3847/1538-4357/ad6158</a>.'
  short: C. Neufeld, P. Van Dokkum, Y. Asali, A. Covelo-Paz, J. Leja, J. Lin, J.J.
    Matthee, P.A. Oesch, N.A. Reddy, I. Shivaei, K.E. Whitaker, S. Wuyts, G. Brammer,
    D. Marchesini, M.V. Maseda, R.P. Naidu, E.J. Nelson, A. Velichko, A. Weibel, M.
    Xiao, Astrophysical Journal 972 (2024).
das_tickbox: '1'
dataavailabilitystatement: The JWST data presented in this article were obtained from
  the Mikulski Archive for Space Telescopes (MAST) at the Space Telescope Science
  Institute. The specific observations analyzed can be accessed on the MAST website.
  26
date_created: 2024-09-15T22:01:40Z
date_published: 2024-09-01T00:00:00Z
date_updated: 2026-10-15T09:22:54Z
day: '01'
ddc:
- '520'
department:
- _id: JoMa
doi: 10.3847/1538-4357/ad6158
external_id:
  isi:
  - '001305987600001'
file:
- access_level: open_access
  checksum: 754b58c1d79adb9670ca76fa8c20ab16
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  creator: dernst
  date_created: 2024-09-17T08:23:59Z
  date_updated: 2024-09-17T08:23:59Z
  file_id: '18082'
  file_name: 2024_AstrophysicalJourn_Neufeld.pdf
  file_size: 9960685
  relation: main_file
  success: 1
file_date_updated: 2024-09-17T08:23:59Z
fulldoi: https://doi.org/10.3847/1538-4357/ad6158
has_accepted_license: '1'
intvolume: '       972'
isi: 1
issue: '2'
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
publication: Astrophysical Journal
publication_identifier:
  eissn:
  - 1538-4357
  issn:
  - 0004-637X
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
researchdata_availability: yes
scopus_import: '1'
status: public
supplementarymaterial: yes
title: 'FRESCO: The Paschen-α star-forming sequence at cosmic noon'
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 972
year: '2024'
...
---
DOAJ_listed: '1'
_id: '15405'
abstract:
- lang: eng
  text: We report JWST/NIRCam measurements of quasar host galaxy emissions and supermassive
    black hole (SMBH) masses for six quasars at 5.9 < z < 7.1 in the Emission-line
    galaxies and Intergalactic Gas in the Epoch of Reionization (EIGER) project. We
    obtain deep NIRCam imaging in the F115W, F200W, and F356W bands, as well as F356W
    grism spectroscopy of the quasars. We use bright unsaturated stars to construct
    models of the point-spread functions (PSFs) and estimate the errors of these PSFs.
    We then measure or constrain the fluxes and morphology of the quasar host galaxies
    by fitting the quasar images as a point source plus an exponential disk. We successfully
    detect the host galaxies of three quasars, which have host-to-quasar-flux ratios
    of ∼1%–5%. Spectral energy distribution fitting suggests that these quasar host
    galaxies have stellar masses of M* ≳ 1010M⊙. For quasars with host galaxy nondetections,
    we estimate the upper limits of their stellar masses. We use the grism spectra
    to measure the Hβ line profile and the continuum luminosity, then estimate the
    SMBH masses for the quasars. Our results indicate that the positive relation between
    SMBH masses and host galaxy stellar masses already exists at redshift z ≳ 6. The
    quasars in our sample show a high BH-to-stellar-mass ratio of MBH/M* ∼ 0.15, which
    is about ∼2 dex higher than local relations. We find that selection effects only
    contribute partially to the high MBH/M* ratios of high-redshift quasars. This
    result hints at a possible redshift evolution of the MBH–M* relation.
acknowledgement: "We thank the referee for the valuable comments on this paper. We
  thank John Silverman, Madeline Marshall, MingYang Zhuang, Weizhe Liu, and Jinyi
  Yang for inspiring discussions and suggestions. D.K. is grateful for the support
  from JSPS KAKENHI grant No. JP21K13956. This work is based on observations made
  with the NASA/ESA/CSA James Webb Space Telescope. The data were obtained from the
  Mikulski Archive for Space Telescopes at the Space Telescope\r\nScience Institute,
  which is operated by the Association of Universities for Research in Astronomy,
  Inc., under NASA contract NAS 5-03127 for JWST. These observations are\r\nassociated
  with program ID #1243. Facility: JWST (NIRCam) Software: astropy (Astropy Collaboration
  et al. 2013, 2018), psfMC (Mechtley 2014), webbpsf (Perrin et al. 2014), jwst."
article_number: '176'
article_processing_charge: Yes
article_type: original
author:
- first_name: Minghao
  full_name: Yue, Minghao
  last_name: Yue
- first_name: Anna Christina
  full_name: Eilers, Anna Christina
  last_name: Eilers
- first_name: Robert A.
  full_name: Simcoe, Robert A.
  last_name: Simcoe
- first_name: Ruari
  full_name: Mackenzie, Ruari
  last_name: Mackenzie
- first_name: Jorryt J
  full_name: Matthee, Jorryt J
  id: 7439a258-f3c0-11ec-9501-9df22fe06720
  last_name: Matthee
  orcid: 0000-0003-2871-127X
- first_name: Daichi
  full_name: Kashino, Daichi
  last_name: Kashino
- first_name: Rongmon
  full_name: Bordoloi, Rongmon
  last_name: Bordoloi
- first_name: Simon J.
  full_name: Lilly, Simon J.
  last_name: Lilly
- first_name: Rohan P.
  full_name: Naidu, Rohan P.
  last_name: Naidu
citation:
  ama: Yue M, Eilers AC, Simcoe RA, et al. EIGER. V. Characterizing the host galaxies
    of luminous quasars at z ≳ 6. <i>Astrophysical Journal</i>. 2024;966(2). doi:<a
    href="https://doi.org/10.3847/1538-4357/ad3914">10.3847/1538-4357/ad3914</a>
  apa: Yue, M., Eilers, A. C., Simcoe, R. A., Mackenzie, R., Matthee, J. J., Kashino,
    D., … Naidu, R. P. (2024). EIGER. V. Characterizing the host galaxies of luminous
    quasars at z ≳ 6. <i>Astrophysical Journal</i>. IOP Publishing. <a href="https://doi.org/10.3847/1538-4357/ad3914">https://doi.org/10.3847/1538-4357/ad3914</a>
  chicago: Yue, Minghao, Anna Christina Eilers, Robert A. Simcoe, Ruari Mackenzie,
    Jorryt J Matthee, Daichi Kashino, Rongmon Bordoloi, Simon J. Lilly, and Rohan
    P. Naidu. “EIGER. V. Characterizing the Host Galaxies of Luminous Quasars at z
    ≳ 6.” <i>Astrophysical Journal</i>. IOP Publishing, 2024. <a href="https://doi.org/10.3847/1538-4357/ad3914">https://doi.org/10.3847/1538-4357/ad3914</a>.
  ieee: M. Yue <i>et al.</i>, “EIGER. V. Characterizing the host galaxies of luminous
    quasars at z ≳ 6,” <i>Astrophysical Journal</i>, vol. 966, no. 2. IOP Publishing,
    2024.
  ista: Yue M, Eilers AC, Simcoe RA, Mackenzie R, Matthee JJ, Kashino D, Bordoloi
    R, Lilly SJ, Naidu RP. 2024. EIGER. V. Characterizing the host galaxies of luminous
    quasars at z ≳ 6. Astrophysical Journal. 966(2), 176.
  mla: Yue, Minghao, et al. “EIGER. V. Characterizing the Host Galaxies of Luminous
    Quasars at z ≳ 6.” <i>Astrophysical Journal</i>, vol. 966, no. 2, 176, IOP Publishing,
    2024, doi:<a href="https://doi.org/10.3847/1538-4357/ad3914">10.3847/1538-4357/ad3914</a>.
  short: M. Yue, A.C. Eilers, R.A. Simcoe, R. Mackenzie, J.J. Matthee, D. Kashino,
    R. Bordoloi, S.J. Lilly, R.P. Naidu, Astrophysical Journal 966 (2024).
das_tickbox: '0'
date_created: 2024-05-19T22:01:12Z
date_published: 2024-05-01T00:00:00Z
date_updated: 2026-10-15T09:20:19Z
day: '01'
ddc:
- '520'
department:
- _id: JoMa
doi: 10.3847/1538-4357/ad3914
external_id:
  isi:
  - '001214916200001'
file:
- access_level: open_access
  checksum: 47b428f6209d8a6f9869031d9cb8dae6
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  creator: dernst
  date_created: 2024-05-21T11:13:25Z
  date_updated: 2024-05-21T11:13:25Z
  file_id: '15410'
  file_name: 2024_AstrophysicalJourn_Yue.pdf
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fulldoi: https://doi.org/10.3847/1538-4357/ad3914
has_accepted_license: '1'
intvolume: '       966'
isi: 1
issue: '2'
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
publication: Astrophysical Journal
publication_identifier:
  eissn:
  - 1538-4357
  issn:
  - 0004-637X
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
researchdata_availability: no
scopus_import: '1'
status: public
supplementarymaterial: yes
title: EIGER. V. Characterizing the host galaxies of luminous quasars at z ≳ 6
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 966
year: '2024'
...
---
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '18585'
abstract:
- lang: eng
  text: We present the census of Hβ+[OIII] 4960,5008 Åemitters at 6.8<z<9.0 from the
    JWST FRESCO survey over 124 arcmin2 in the GOODS-North and GOODS-South fields.
    Our unbiased spectroscopic search results in 137 spectroscopically-confirmed galaxies
    at 6.8<z<9.0 with observed [OIII] fluxes f[OIII]≳1×10−18 ergs s−1 cm−2. The rest-frame
    optical line ratios of the median stacked spectrum (median MUV=−19.65+0.59−1.05)
    indicate negligible dust attenuation, low metallicity (12+log(O/H)=7.2−7.7) and
    a high ionisation parameter log10U≃−2.5. We find a factor ×1.3 difference in the
    number density of 6.8<z<9.0 galaxies between GOODS-South and GOODS-North, which
    is caused by a single overdensity at 7.0<z<7.2 in GOODS-North. The bright end
    of the UV luminosity function of spectroscopically-confirmed [OIII] emitters is
    in good agreement with HST dropout-selected samples. Discrepancies between the
    observed [OIII] LF, [OIII]/UV ratio and [OIII] equivalent widths, and that predicted
    by theoretical models, suggest burstier star-formation histories and/or more heterogeneous
    metallicity and ionising conditions in z>7 galaxies. We report a rapid decline
    of the [OIII] luminosity density at z≳6−7 which cannot be explained by the evolution
    of the cosmic star-formation rate density. Finally we find that FRESCO detects
    in only 2h galaxies likely accounting for ∼10−20% of the ionising budget at z=7−8
    (assuming an escape fraction of 10%), raising the prospect of directly detecting
    a significant fraction of the sources of reionisation with JWST.
acknowledgement: "The authors thank the anonymous referee for comments and suggestions
  which improved this paper. RAM thanks R. Kannan for sharing emission line luminosities
  from THESAN and H. Katz for similar data from an early version of the SPHINX20 data
  release (we use the final data release in this paper). The authors thank the CONGRESS
  team for proposing and designing their program with a zero exclusive access period.\r\nRAM,
  PA, ACP, and AW acknowledge support from the Swiss National Science Foundation (SNSF)
  through project grant 200020_207349. PA, AW, EG, and MX acknowledge support from
  the Swiss State Secretariat for Education, Research and Innovation (SERI) under
  contract number MB22.00072. YF acknowledges support by JSPS KAKENHI grant number
  JP22K21349 and JP23K13149. RPN acknowledges support for this work provided by NASA
  through the NASA Hubble Fellowship grant HST-HF2-51515.001-A awarded by the Space
  Telescope Science Institute, which is operated by the Association of Universities
  for Research in Astronomy, Incorporated, under NASA contract NAS5-26555. MS acknowledges
  support from the European Research Commission Grant 101088789 (SFEER), from the
  CIDEGENT/2021/059 grant by Generalitat Valenciana, and from project PID2019-109592GB-I00/AEI/10.13039/501100011033
  by the Spanish Ministerio de Ciencia e Innovación - Agencia Estatal de Investigación.
  The Cosmic Dawn Center (DAWN) is funded by the Danish National Research Foundation
  under grant no. 140. Cloud-based data processing and file storage for this work
  is provided by the AWS Cloud Credits for Research program. RJB and MS acknowledges
  support from NWO grant TOP1.16.057.\r\nThis work is based on observations made with
  the NASA/ESA/CSA JWST. The raw data were obtained from the Mikulski Archive for
  Space Telescopes at the Space Telescope Science Institute, which is operated by
  the Association of Universities for Research in Astronomy, Inc., under NASA contract
  NAS 5-03127 for JWST. These observations are associated with JWST Cycle 1 GO program
  #1895. Support for program JWST-GO-1895 was provided by NASA through a grant from
  the Space Telescope Science Institute, which is operated by the Associations of
  Universities for Research in Astronomy, Incorporated, under NASA contract NAS5-26555."
article_processing_charge: Yes
article_type: original
author:
- first_name: R. A.
  full_name: Meyer, R. A.
  last_name: Meyer
- first_name: P. A.
  full_name: Oesch, P. A.
  last_name: Oesch
- first_name: E.
  full_name: Giovinazzo, E.
  last_name: Giovinazzo
- first_name: A.
  full_name: Weibel, A.
  last_name: Weibel
- first_name: G.
  full_name: Brammer, G.
  last_name: Brammer
- first_name: Jorryt J
  full_name: Matthee, Jorryt J
  id: 7439a258-f3c0-11ec-9501-9df22fe06720
  last_name: Matthee
  orcid: 0000-0003-2871-127X
- first_name: R. P.
  full_name: Naidu, R. P.
  last_name: Naidu
- first_name: R. J.
  full_name: Bouwens, R. J.
  last_name: Bouwens
- first_name: J.
  full_name: Chisholm, J.
  last_name: Chisholm
- first_name: A.
  full_name: Covelo-Paz, A.
  last_name: Covelo-Paz
- first_name: Y.
  full_name: Fudamoto, Y.
  last_name: Fudamoto
- first_name: M.
  full_name: Maseda, M.
  last_name: Maseda
- first_name: E.
  full_name: Nelson, E.
  last_name: Nelson
- first_name: I.
  full_name: Shivaei, I.
  last_name: Shivaei
- first_name: M.
  full_name: Xiao, M.
  last_name: Xiao
- first_name: T.
  full_name: Herard-Demanche, T.
  last_name: Herard-Demanche
- first_name: G. D.
  full_name: Illingworth, G. D.
  last_name: Illingworth
- first_name: J.
  full_name: Kerutt, J.
  last_name: Kerutt
- first_name: Ivan
  full_name: Kramarenko, Ivan
  id: 9a9394cb-3200-11ee-973b-f5ba2a8b16e4
  last_name: Kramarenko
  orcid: 0000-0001-5346-6048
- first_name: I.
  full_name: Labbe, I.
  last_name: Labbe
- first_name: E.
  full_name: Leonova, E.
  last_name: Leonova
- first_name: D.
  full_name: Magee, D.
  last_name: Magee
- first_name: J.
  full_name: Matharu, J.
  last_name: Matharu
- first_name: G.
  full_name: Prieto Lyon, G.
  last_name: Prieto Lyon
- first_name: N.
  full_name: Reddy, N.
  last_name: Reddy
- first_name: D.
  full_name: Schaerer, D.
  last_name: Schaerer
- first_name: A.
  full_name: Shapley, A.
  last_name: Shapley
- first_name: M.
  full_name: Stefanon, M.
  last_name: Stefanon
- first_name: M. A.
  full_name: Wozniak, M. A.
  last_name: Wozniak
- first_name: S.
  full_name: Wuyts, S.
  last_name: Wuyts
citation:
  ama: 'Meyer RA, Oesch PA, Giovinazzo E, et al. JWST FRESCO: A comprehensive census
    of H β + [O iii] emitters at 6.8 &#60; z &#60; 9.0 in the GOODS fields. <i>Monthly
    Notices of the Royal Astronomical Society</i>. 2024;535(1):1067-1094. doi:<a href="https://doi.org/10.1093/mnras/stae2353">10.1093/mnras/stae2353</a>'
  apa: 'Meyer, R. A., Oesch, P. A., Giovinazzo, E., Weibel, A., Brammer, G., Matthee,
    J. J., … Wuyts, S. (2024). JWST FRESCO: A comprehensive census of H β + [O iii]
    emitters at 6.8 &#60; z &#60; 9.0 in the GOODS fields. <i>Monthly Notices of the
    Royal Astronomical Society</i>. Oxford University Press. <a href="https://doi.org/10.1093/mnras/stae2353">https://doi.org/10.1093/mnras/stae2353</a>'
  chicago: 'Meyer, R. A., P. A. Oesch, E. Giovinazzo, A. Weibel, G. Brammer, Jorryt
    J Matthee, R. P. Naidu, et al. “JWST FRESCO: A Comprehensive Census of H β + [O
    Iii] Emitters at 6.8 &#60; z &#60; 9.0 in the GOODS Fields.” <i>Monthly Notices
    of the Royal Astronomical Society</i>. Oxford University Press, 2024. <a href="https://doi.org/10.1093/mnras/stae2353">https://doi.org/10.1093/mnras/stae2353</a>.'
  ieee: 'R. A. Meyer <i>et al.</i>, “JWST FRESCO: A comprehensive census of H β +
    [O iii] emitters at 6.8 &#60; z &#60; 9.0 in the GOODS fields,” <i>Monthly Notices
    of the Royal Astronomical Society</i>, vol. 535, no. 1. Oxford University Press,
    pp. 1067–1094, 2024.'
  ista: 'Meyer RA, Oesch PA, Giovinazzo E, Weibel A, Brammer G, Matthee JJ, Naidu
    RP, Bouwens RJ, Chisholm J, Covelo-Paz A, Fudamoto Y, Maseda M, Nelson E, Shivaei
    I, Xiao M, Herard-Demanche T, Illingworth GD, Kerutt J, Kramarenko I, Labbe I,
    Leonova E, Magee D, Matharu J, Prieto Lyon G, Reddy N, Schaerer D, Shapley A,
    Stefanon M, Wozniak MA, Wuyts S. 2024. JWST FRESCO: A comprehensive census of
    H β + [O iii] emitters at 6.8 &#60; z &#60; 9.0 in the GOODS fields. Monthly Notices
    of the Royal Astronomical Society. 535(1), 1067–1094.'
  mla: 'Meyer, R. A., et al. “JWST FRESCO: A Comprehensive Census of H β + [O Iii]
    Emitters at 6.8 &#60; z &#60; 9.0 in the GOODS Fields.” <i>Monthly Notices of
    the Royal Astronomical Society</i>, vol. 535, no. 1, Oxford University Press,
    2024, pp. 1067–94, doi:<a href="https://doi.org/10.1093/mnras/stae2353">10.1093/mnras/stae2353</a>.'
  short: R.A. Meyer, P.A. Oesch, E. Giovinazzo, A. Weibel, G. Brammer, J.J. Matthee,
    R.P. Naidu, R.J. Bouwens, J. Chisholm, A. Covelo-Paz, Y. Fudamoto, M. Maseda,
    E. Nelson, I. Shivaei, M. Xiao, T. Herard-Demanche, G.D. Illingworth, J. Kerutt,
    I. Kramarenko, I. Labbe, E. Leonova, D. Magee, J. Matharu, G. Prieto Lyon, N.
    Reddy, D. Schaerer, A. Shapley, M. Stefanon, M.A. Wozniak, S. Wuyts, Monthly Notices
    of the Royal Astronomical Society 535 (2024) 1067–1094.
das_tickbox: '1'
dataavailabilitystatement: "The results presented in this work are mostly based on
  public JWST GO1 data (Programme #1895), reduced with the publicly-available code
  GRIZLI (grizli.readthedocs.io). The reduced imaging data is publicly available at
  https://s3.amazonaws.com/grizli-v2/JwstMosaics/v7/index.html or through MAST: https://archive.stsci.edu/hlsp/fresco
  (DOI:10.17909/gdyc-7g80). The [\r\n] emitters catalogues presented in this work,
  as well as subsequent updates, is publicly available at the following link https://github.com/rameyer/fresco/."
date_created: 2024-11-24T23:01:49Z
date_published: 2024-11-01T00:00:00Z
date_updated: 2026-10-15T09:36:43Z
day: '01'
ddc:
- '520'
department:
- _id: JoMa
doi: 10.1093/mnras/stae2353
external_id:
  isi:
  - '001348009500001'
file:
- access_level: open_access
  checksum: efe0ce3580e01459f3be78eb111b35a9
  content_type: application/pdf
  creator: dernst
  date_created: 2024-12-03T12:52:13Z
  date_updated: 2024-12-03T12:52:13Z
  file_id: '18613'
  file_name: 2024_MonthlyNRoyalAstronSoc_Meyer.pdf
  file_size: 29476699
  relation: main_file
  success: 1
file_date_updated: 2024-12-03T12:52:13Z
fulldoi: https://doi.org/10.1093/mnras/stae2353
has_accepted_license: '1'
intvolume: '       535'
isi: 1
issue: '1'
language:
- iso: eng
month: '11'
oa: 1
oa_version: Published Version
page: 1067-1094
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
  eissn:
  - 1365-2966
  issn:
  - 0035-8711
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
researchdata_availability: yes
scopus_import: '1'
status: public
supplementarymaterial: yes
title: 'JWST FRESCO: A comprehensive census of H β + [O iii] emitters at 6.8 < z <
  9.0 in the GOODS fields'
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 535
year: '2024'
...
---
OA_place: publisher
OA_type: diamond
_id: '18493'
abstract:
- lang: eng
  text: "Context. The escape of Lyman-α photons at redshifts greater than two is an
    ongoing subject of study and an important quantity to further understanding of
    Lyman-α emitters (LAEs), the transmission of Lyman-α photons through the interstellar
    medium and intergalactic medium, and the impact these LAEs have on cosmic reionisation.\r\n\r\nAims.
    This study aims to assess the Lyman-α escape fraction, fesc, Lyα, over the redshift
    range 2.9 < z < 6.7, focusing on Very Large Telescope/Multi Unit Spectroscopic
    Explorer (VLT/MUSE) selected, gravitationally lensed, intrinsically faint LAEs.
    These galaxies are of particular interest as the potential drivers of cosmic reionisation.\r\n\r\nMethods.
    We assessed fesc, Lyα in two ways: through an individual study of 96 LAEs behind
    the A2744 lensing cluster, with James Webb Space Telescope/Near-Infrared Camera
    (JWST/NIRCam) and HST data, and through a study of the global evolution of fesc, Lyα
    using the state-of-the-art luminosity functions for LAEs and the UV-selected ‘parent’
    population (dust-corrected). We compared these studies to those in the literature
    based on brighter samples.\r\n\r\nResults. We find a negligible redshift evolution
    of fesc, Lyα for our individual galaxies; it is likely that it was washed out
    by significant intrinsic scatter. We observed a more significant evolution towards
    higher escape fractions with decreasing UV magnitude and fit this relation. When
    comparing the two luminosity functions to derive fesc, Lyα in a global sense,
    we saw agreement with previous literature when integrating the luminosity functions
    to a bright limit. However, when integrating using a faint limit equivalent to
    the observational limits of our samples, we observed enhanced values of fesc, Lyα,
    particularly around z ∼ 6, where fesc, Lyα becomes consistent with 100% escape.
    This indicates for the faint regimes we sampled that galaxies towards reionisation
    tend to allow very large fractions of Lyman-α photons to escape. We interpret
    this as evidence of a lack of any significant dust in these populations; our sample
    is likely dominated by young, highly star-forming chemically unevolved galaxies.
    Finally, we assessed the contribution of the LAE population to reionisation using
    our latest values for fesc, Lyα and the LAE luminosity density. The dependence
    on the escape fraction of Lyman continuum photons is strong, but for values similar
    to those observed recently in z ∼ 3 LAEs and high-redshift analogues, LAEs could
    provide all the ionising emissivity necessary for reionisation."
acknowledgement: "This work is done based on observations made with ESO Telescopes
  at the La Silla Paranal Observatory under programme IDs 060.A-9345, 092.A-0472,
  094.A-0115, 095.A-0181, 096.A-0710, 097.A0269, 100.A-0249, and 294.A-5032. Also
  based on observations obtained with the\r\nNASA/ESA Hubble Space Telescope, retrieved
  from the Mikulski Archive for Space Telescopes (MAST) at the Space Telescope Science
  Institute (STScI). STScI is operated by the Association of Universities for Research
  in Astronomy, Inc. under NASA contract NAS 5-26555. All plots in this paper were
  created using Matplotlib (Hunter 2007). Part of this work was supported by the French
  CNRS, the Aix-Marseille University, the French Programme National de Cosmologie
  et Galaxies (PNCG) of CNRS/INSU with INP and IN2P3, co-funded by CEA and CNES. This
  work also received support from the French government under the France 2030 investment
  plan, as part of the Excellence Initiative of Aix-Marseille University - A*MIDEX
  (AMX-19-IET-008 - IPhU).\r\nFinancial support from the World Laboratory, the Odon
  Vallet Foundation and VNSC is gratefully acknowledged. Tran Thi Thai was funded
  by Vingroup JSC and supported by the Master, PhD Scholarship Programme of Vingroup
  Innovation Foundation (VINIF), Institute of Big Data, code VINIF.2023.TS.108. This
  research was funded by Vingroup Innovation Foundation under project code VINIF.2023.DA.057."
article_number: A302
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: I.
  full_name: Goovaerts, I.
  last_name: Goovaerts
- first_name: T. T.
  full_name: Thai, T. T.
  last_name: Thai
- first_name: R.
  full_name: Pello, R.
  last_name: Pello
- first_name: P.
  full_name: Tuan-Anh, P.
  last_name: Tuan-Anh
- first_name: N.
  full_name: Laporte, N.
  last_name: Laporte
- first_name: Jorryt J
  full_name: Matthee, Jorryt J
  id: 7439a258-f3c0-11ec-9501-9df22fe06720
  last_name: Matthee
  orcid: 0000-0003-2871-127X
- first_name: T.
  full_name: Nanayakkara, T.
  last_name: Nanayakkara
- first_name: J.
  full_name: Pharo, J.
  last_name: Pharo
citation:
  ama: Goovaerts I, Thai TT, Pello R, et al. Charting the Lyman-α escape fraction
    in the range 2.9 &#60; z &#60; 6.7 and consequences for the LAE reionisation contribution.
    <i>Astronomy &#38; Astrophysics</i>. 2024;690. doi:<a href="https://doi.org/10.1051/0004-6361/202451432">10.1051/0004-6361/202451432</a>
  apa: Goovaerts, I., Thai, T. T., Pello, R., Tuan-Anh, P., Laporte, N., Matthee,
    J. J., … Pharo, J. (2024). Charting the Lyman-α escape fraction in the range 2.9
    &#60; z &#60; 6.7 and consequences for the LAE reionisation contribution. <i>Astronomy
    &#38; Astrophysics</i>. EDP Sciences. <a href="https://doi.org/10.1051/0004-6361/202451432">https://doi.org/10.1051/0004-6361/202451432</a>
  chicago: Goovaerts, I., T. T. Thai, R. Pello, P. Tuan-Anh, N. Laporte, Jorryt J
    Matthee, T. Nanayakkara, and J. Pharo. “Charting the Lyman-α Escape Fraction in
    the Range 2.9 &#60; z &#60; 6.7 and Consequences for the LAE Reionisation Contribution.”
    <i>Astronomy &#38; Astrophysics</i>. EDP Sciences, 2024. <a href="https://doi.org/10.1051/0004-6361/202451432">https://doi.org/10.1051/0004-6361/202451432</a>.
  ieee: I. Goovaerts <i>et al.</i>, “Charting the Lyman-α escape fraction in the range
    2.9 &#60; z &#60; 6.7 and consequences for the LAE reionisation contribution,”
    <i>Astronomy &#38; Astrophysics</i>, vol. 690. EDP Sciences, 2024.
  ista: Goovaerts I, Thai TT, Pello R, Tuan-Anh P, Laporte N, Matthee JJ, Nanayakkara
    T, Pharo J. 2024. Charting the Lyman-α escape fraction in the range 2.9 &#60;
    z &#60; 6.7 and consequences for the LAE reionisation contribution. Astronomy
    &#38; Astrophysics. 690, A302.
  mla: Goovaerts, I., et al. “Charting the Lyman-α Escape Fraction in the Range 2.9
    &#60; z &#60; 6.7 and Consequences for the LAE Reionisation Contribution.” <i>Astronomy
    &#38; Astrophysics</i>, vol. 690, A302, EDP Sciences, 2024, doi:<a href="https://doi.org/10.1051/0004-6361/202451432">10.1051/0004-6361/202451432</a>.
  short: I. Goovaerts, T.T. Thai, R. Pello, P. Tuan-Anh, N. Laporte, J.J. Matthee,
    T. Nanayakkara, J. Pharo, Astronomy &#38; Astrophysics 690 (2024).
das_tickbox: '0'
date_created: 2024-11-03T23:01:45Z
date_published: 2024-10-01T00:00:00Z
date_updated: 2026-10-15T09:40:49Z
day: '01'
ddc:
- '520'
department:
- _id: JoMa
doi: 10.1051/0004-6361/202451432
external_id:
  arxiv:
  - '2408.00517'
  isi:
  - '001339205700015'
file:
- access_level: open_access
  checksum: 4007e2b0fadf93bea61c5bec3fc97e87
  content_type: application/pdf
  creator: dernst
  date_created: 2024-11-04T08:04:44Z
  date_updated: 2024-11-04T08:04:44Z
  file_id: '18495'
  file_name: 2024_AstronomyAstrophysics_Goovaerts.pdf
  file_size: 2008461
  relation: main_file
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file_date_updated: 2024-11-04T08:04:44Z
fulldoi: https://doi.org/10.1051/0004-6361/202451432
has_accepted_license: '1'
intvolume: '       690'
isi: 1
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
publication: Astronomy & Astrophysics
publication_identifier:
  eissn:
  - 1432-0746
  issn:
  - 0004-6361
publication_status: published
publisher: EDP Sciences
quality_controlled: '1'
researchdata_availability: no
scopus_import: '1'
status: public
supplementarymaterial: yes
title: Charting the Lyman-α escape fraction in the range 2.9 < z < 6.7 and consequences
  for the LAE reionisation contribution
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 690
year: '2024'
...
---
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '18523'
abstract:
- lang: eng
  text: "Recent observations from the EIGER JWST program have measured for the first
    time the quasar–galaxy cross-correlation function at z ≈ 6. The autocorrelation
    function of faint z ≈ 6 quasars was also recently estimated. These measurements
    provide key insights into the properties of quasars and galaxies at high redshift
    and their relation with the host dark matter haloes. In this work, we interpret
    these data building upon an empirical quasar population model that has been applied
    successfully to quasar clustering and demographic measurements at z ≈ 2–4. We
    use a new, large-volume N-body simulation with more than a trillion particles,
    FLAMINGO-10k, to model quasars and galaxies simultaneously. We successfully reproduce
    observations of z ≈ 6 quasars and galaxies (i.e. their clustering properties and
    luminosity functions), and infer key quantities such as their luminosity–halo
    mass relation, the mass function of their host haloes, and their duty cycle/occupation
    fraction. Our key findings\r\nare (i) quasars reside on average in ≈ 1012.5 M
    haloes (corresponding to ≈ 5σ fluctuations in the initial conditions of the linear
    density field), but the distribution of host halo masses is quite broad; (ii)
    the duty cycle of (UV-bright) quasar activity is relatively low (≈ 1 per cent);
    (iii) galaxies (that are bright in [O III]) live in much smaller haloes (≈ 1010.9
    M) and have a larger duty cycle (occupation fraction) of ≈ 13 per cent. Finally,
    we focus on the inferred properties of quasars and present a homogeneous analysis
    of their evolution with redshift. The picture that emerges reveals a strong evolution
    of the host halo mass and duty cycle of quasars at z ≈ 2–6, and calls for new
    investigations of the role of quasar activity across cosmic time."
acknowledgement: "We are grateful to Junya Arita and the SHELLQs team for sharing
  their data on the quasar autocorrelation function and to Jan-Torge Schindler for
  discussion on the QLF. We acknowledge helpful conversations with the ENIGMA group
  at UC Santa Barbara and Leiden University. EP is grateful to Rob McGibbon and Victor
  Forouhar Moreno for help with the simulation outputs, and to Timo Kist, Jiamu Huang,
  and Vikram Khaire for comments on an early version of the manuscript. JFH and EP
  acknowledge support from the European Research Council (ERC) under the European
  Union’s Horizon 2020 research and innovation program (grant agreement No 885301).
  This work is partly supported by funding from the European Union’s Horizon 2020
  research and innovation programme under the Marie Skłodowska-Curie grant agreement
  No 860744 (BiD4BESt). FW acknowledges support from NSF grant AST-2308258. This work
  used the DiRAC Memory Intensive service (Cosma8) at the University of Durham, which
  is part of the STFC DiRAC HPC Facility (www.dirac.ac.uk). Access to DiRAC resources
  was granted through a Director’s Discretionary Time allocation in 2023/24, under
  the auspices of the UKRI-funded\r\nDiRAC Federation Project. The equipment was funded
  by BEIS capital funding via STFC capital grants ST/K00042X/1, ST/P002293/1, ST/R002371/1,
  and ST/S002502/1, Durham University, and STFC operations grant ST/R000832/1. DiRAC
  is part of the National e-Infrastructure."
article_processing_charge: Yes
article_type: original
author:
- first_name: Elia
  full_name: Pizzati, Elia
  last_name: Pizzati
- first_name: Joseph F.
  full_name: Hennawi, Joseph F.
  last_name: Hennawi
- first_name: Joop
  full_name: Schaye, Joop
  last_name: Schaye
- first_name: Matthieu
  full_name: Schaller, Matthieu
  last_name: Schaller
- first_name: Anna Christina
  full_name: Eilers, Anna Christina
  last_name: Eilers
- first_name: Feige
  full_name: Wang, Feige
  last_name: Wang
- first_name: Carlos S.
  full_name: Frenk, Carlos S.
  last_name: Frenk
- first_name: Willem
  full_name: Elbers, Willem
  last_name: Elbers
- first_name: John C.
  full_name: Helly, John C.
  last_name: Helly
- first_name: Ruari
  full_name: Mackenzie, Ruari
  last_name: Mackenzie
- first_name: Jorryt J
  full_name: Matthee, Jorryt J
  id: 7439a258-f3c0-11ec-9501-9df22fe06720
  last_name: Matthee
  orcid: 0000-0003-2871-127X
- first_name: Rongmon
  full_name: Bordoloi, Rongmon
  last_name: Bordoloi
- first_name: Daichi
  full_name: Kashino, Daichi
  last_name: Kashino
- first_name: Rohan P.
  full_name: Naidu, Rohan P.
  last_name: Naidu
- first_name: Minghao
  full_name: Yue, Minghao
  last_name: Yue
citation:
  ama: Pizzati E, Hennawi JF, Schaye J, et al. A unified model for the clustering
    of quasars and galaxies at z ≈ 6. <i>Monthly Notices of the Royal Astronomical
    Society</i>. 2024;534(4):3155-3175. doi:<a href="https://doi.org/10.1093/mnras/stae2307">10.1093/mnras/stae2307</a>
  apa: Pizzati, E., Hennawi, J. F., Schaye, J., Schaller, M., Eilers, A. C., Wang,
    F., … Yue, M. (2024). A unified model for the clustering of quasars and galaxies
    at z ≈ 6. <i>Monthly Notices of the Royal Astronomical Society</i>. Oxford University
    Press. <a href="https://doi.org/10.1093/mnras/stae2307">https://doi.org/10.1093/mnras/stae2307</a>
  chicago: Pizzati, Elia, Joseph F. Hennawi, Joop Schaye, Matthieu Schaller, Anna
    Christina Eilers, Feige Wang, Carlos S. Frenk, et al. “A Unified Model for the
    Clustering of Quasars and Galaxies at z ≈ 6.” <i>Monthly Notices of the Royal
    Astronomical Society</i>. Oxford University Press, 2024. <a href="https://doi.org/10.1093/mnras/stae2307">https://doi.org/10.1093/mnras/stae2307</a>.
  ieee: E. Pizzati <i>et al.</i>, “A unified model for the clustering of quasars and
    galaxies at z ≈ 6,” <i>Monthly Notices of the Royal Astronomical Society</i>,
    vol. 534, no. 4. Oxford University Press, pp. 3155–3175, 2024.
  ista: Pizzati E, Hennawi JF, Schaye J, Schaller M, Eilers AC, Wang F, Frenk CS,
    Elbers W, Helly JC, Mackenzie R, Matthee JJ, Bordoloi R, Kashino D, Naidu RP,
    Yue M. 2024. A unified model for the clustering of quasars and galaxies at z ≈
    6. Monthly Notices of the Royal Astronomical Society. 534(4), 3155–3175.
  mla: Pizzati, Elia, et al. “A Unified Model for the Clustering of Quasars and Galaxies
    at z ≈ 6.” <i>Monthly Notices of the Royal Astronomical Society</i>, vol. 534,
    no. 4, Oxford University Press, 2024, pp. 3155–75, doi:<a href="https://doi.org/10.1093/mnras/stae2307">10.1093/mnras/stae2307</a>.
  short: E. Pizzati, J.F. Hennawi, J. Schaye, M. Schaller, A.C. Eilers, F. Wang, C.S.
    Frenk, W. Elbers, J.C. Helly, R. Mackenzie, J.J. Matthee, R. Bordoloi, D. Kashino,
    R.P. Naidu, M. Yue, Monthly Notices of the Royal Astronomical Society 534 (2024)
    3155–3175.
das_tickbox: '1'
dataavailabilitystatement: The derived data generated in this research will be shared
  on reasonable requests to the corresponding author.
date_created: 2024-11-10T23:01:58Z
date_published: 2024-11-01T00:00:00Z
date_updated: 2026-10-15T09:35:12Z
day: '01'
ddc:
- '520'
department:
- _id: JoMa
doi: 10.1093/mnras/stae2307
external_id:
  isi:
  - '001335663900008'
file:
- access_level: open_access
  checksum: 9ea6285dd1d04d7a9e7b40a4c9e11edb
  content_type: application/pdf
  creator: dernst
  date_created: 2024-11-12T07:17:26Z
  date_updated: 2024-11-12T07:17:26Z
  file_id: '18542'
  file_name: 2024_MonthlyNRoyalAstronSoc_Pizzati.pdf
  file_size: 2954312
  relation: main_file
  success: 1
file_date_updated: 2024-11-12T07:17:26Z
fulldoi: https://doi.org/10.1093/mnras/stae2307
has_accepted_license: '1'
intvolume: '       534'
isi: 1
issue: '4'
language:
- iso: eng
month: '11'
oa: 1
oa_version: Published Version
page: 3155-3175
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
  eissn:
  - 1365-2966
  issn:
  - 0035-8711
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
researchdata_availability: upon request
scopus_import: '1'
status: public
supplementarymaterial: yes
title: A unified model for the clustering of quasars and galaxies at z ≈ 6
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 534
year: '2024'
...
---
OA_place: publisher
OA_type: hybrid
_id: '18527'
abstract:
- lang: eng
  text: "Context. Galaxies evolve through a dynamic exchange of material with their
    immediate surrounding environment, the so-called circumgalactic medium (CGM).
    Understanding the physics of gas flows and the nature of the CGM is fundamental
    to studying galaxy evolution, especially at 4 ≤ z ≤ 6 (i.e., after the Epoch of
    Reionization) when galaxies rapidly assembled their masses and reached their chemical
    maturity. Galactic outflows are predicted to enrich the CGM with metals, although
    it has also been suggested that gas stripping in systems undergoing a major merger
    may play a role.\r\n\r\nAims. In this work, we explore the metal enrichment of
    the medium around merging galaxies at z ∼ 4.5, observed by the ALMA Large Program
    to INvestigate [CII] at Early times (ALPINE). To do so, we study the nature of
    the [CII] 158 μm emission in the CGM around these systems, using simulations to
    help disentangle the mechanisms contributing to the CGM metal pollution.\r\n\r\nMethods.
    By adopting an updated classification of major merger systems in the ALPINE survey,
    we selected and analyzed merging galaxies whose components can be spatially and/or
    spectrally resolved in a robust way. This makes it possible to distinguish between
    the [CII] emission coming from the single components of the system and that coming
    from the system as a whole. We also made use of the dustyGadget cosmological simulation
    to select synthetic analogs of observed galaxies and guide the interpretation
    of the observational results.\r\n\r\nResults. We find a large diffuse [CII] envelope
    (≳20 kpc) embedding all the merging systems, with at least 25% of the total [CII]
    emission coming from the medium between the galaxies. Using predictions from dustyGadget,
    we suggest that this emission has a multi-fold nature, with dynamical interactions
    between galaxies playing a major role in stripping the gas and enriching the medium
    with heavy elements."
acknowledgement: 'The authors would like to thank the anonymous referee for the useful
  suggestions which improved this article. This paper is based on data obtained with
  the ALMA Observatory, under Large Program 2017.1.00428.L. ALMA is a partnership
  of ESO (representing its member states), NSF (USA), and NINS (Japan), together with
  NRC (Canada), MOST and ASIAA (Taiwan), and KASI (Republic of Korea), in cooperation
  with the Republic of Chile. The Joint ALMA Observatory is operated by ESO, AUI/NRAO
  and NAOJ. CDC would like to thank the GESO group at the European Southern Observatory
  (ESO) for the useful discussions while preparing this manuscript. The simulated
  data underlying this article will be shared on reasonable request to the corresponding
  author. CDC acknowledged support from Sapienza University of Rome program “Bando
  per la mobilità individuale all’estero” (DR n.1607 del 14 June 2021) during the
  visiting period (June-November 2022) at ESO Garching, Germany. LG and RS acknowledge
  support from the PRIN 2022 MUR project 2022CB3PJ3 – First Light And Galaxy aSsembly
  (FLAGS) funded by the European Union – Next Generation EU, and from the Amaldi Research
  Center funded by the MIUR program “Dipartimento di Eccellenza” (CUP:B81I18001170001).
  MR acknowledges support from the Narodowe Centrum Nauki (UMO-2020/38/E/ST9/00077)
  and support from the Foundation for Polish Science (FNP) under the program START
  063.2023. We have benefited from the publicly available software CASA and CARTA
  and programming language Python, including the numpy (https://numpy.org), matplotlib
  (https://matplotlib.org), scipy (https://scipy.org) and astropy (http://www.astropy.org)
  packages. '
article_number: A255
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Claudia
  full_name: Di Cesare, Claudia
  id: 2d002343-372f-11ef-98ec-a164d20427cb
  last_name: Di Cesare
- first_name: M.
  full_name: Ginolfi, M.
  last_name: Ginolfi
- first_name: L.
  full_name: Graziani, L.
  last_name: Graziani
- first_name: R.
  full_name: Schneider, R.
  last_name: Schneider
- first_name: M.
  full_name: Romano, M.
  last_name: Romano
- first_name: G.
  full_name: Popping, G.
  last_name: Popping
citation:
  ama: Di Cesare C, Ginolfi M, Graziani L, Schneider R, Romano M, Popping G. Carbon
    envelopes around merging galaxies at z ~ 4.5. <i>Astronomy &#38; Astrophysics</i>.
    2024;690. doi:<a href="https://doi.org/10.1051/0004-6361/202449164">10.1051/0004-6361/202449164</a>
  apa: Di Cesare, C., Ginolfi, M., Graziani, L., Schneider, R., Romano, M., &#38;
    Popping, G. (2024). Carbon envelopes around merging galaxies at z ~ 4.5. <i>Astronomy
    &#38; Astrophysics</i>. EDP Sciences. <a href="https://doi.org/10.1051/0004-6361/202449164">https://doi.org/10.1051/0004-6361/202449164</a>
  chicago: Di Cesare, Claudia, M. Ginolfi, L. Graziani, R. Schneider, M. Romano, and
    G. Popping. “Carbon Envelopes around Merging Galaxies at z ~ 4.5.” <i>Astronomy
    &#38; Astrophysics</i>. EDP Sciences, 2024. <a href="https://doi.org/10.1051/0004-6361/202449164">https://doi.org/10.1051/0004-6361/202449164</a>.
  ieee: C. Di Cesare, M. Ginolfi, L. Graziani, R. Schneider, M. Romano, and G. Popping,
    “Carbon envelopes around merging galaxies at z ~ 4.5,” <i>Astronomy &#38; Astrophysics</i>,
    vol. 690. EDP Sciences, 2024.
  ista: Di Cesare C, Ginolfi M, Graziani L, Schneider R, Romano M, Popping G. 2024.
    Carbon envelopes around merging galaxies at z ~ 4.5. Astronomy &#38; Astrophysics.
    690, A255.
  mla: Di Cesare, Claudia, et al. “Carbon Envelopes around Merging Galaxies at z ~
    4.5.” <i>Astronomy &#38; Astrophysics</i>, vol. 690, A255, EDP Sciences, 2024,
    doi:<a href="https://doi.org/10.1051/0004-6361/202449164">10.1051/0004-6361/202449164</a>.
  short: C. Di Cesare, M. Ginolfi, L. Graziani, R. Schneider, M. Romano, G. Popping,
    Astronomy &#38; Astrophysics 690 (2024).
corr_author: '1'
das_tickbox: '0'
date_created: 2024-11-10T23:02:00Z
date_published: 2024-10-01T00:00:00Z
date_updated: 2026-10-15T09:35:32Z
day: '01'
ddc:
- '520'
department:
- _id: JoMa
doi: 10.1051/0004-6361/202449164
external_id:
  arxiv:
  - '2401.03020'
  isi:
  - '001332213700013'
file:
- access_level: open_access
  checksum: 24c65a64047aba156f39b01425269bdb
  content_type: application/pdf
  creator: dernst
  date_created: 2024-11-11T08:54:11Z
  date_updated: 2024-11-11T08:54:11Z
  file_id: '18533'
  file_name: 2024_AstronomyAstrophysics_diCesare.pdf
  file_size: 8033864
  relation: main_file
  success: 1
file_date_updated: 2024-11-11T08:54:11Z
fulldoi: https://doi.org/10.1051/0004-6361/202449164
has_accepted_license: '1'
intvolume: '       690'
isi: 1
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
publication: Astronomy & Astrophysics
publication_identifier:
  eissn:
  - 1432-0746
  issn:
  - 0004-6361
publication_status: published
publisher: EDP Sciences
quality_controlled: '1'
researchdata_availability: no
scopus_import: '1'
status: public
supplementarymaterial: yes
title: Carbon envelopes around merging galaxies at z ~ 4.5
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 690
year: '2024'
...
---
OA_place: publisher
OA_type: free access
_id: '18890'
abstract:
- lang: eng
  text: Deep Neural Collapse (DNC) refers to the surprisingly rigid structure of the
    data representations in the final layers of Deep Neural Networks (DNNs). Though
    the phenomenon has been measured in a variety of settings, its emergence is typically
    explained via data-agnostic approaches, such as the unconstrained features model.
    In this work, we introduce a data-dependent setting where DNC forms due to feature
    learning through the average gradient outer product (AGOP). The AGOP is defined
    with respect to a learned predictor and is equal to the uncentered covariance
    matrix of its input-output gradients averaged over the training dataset. The Deep
    Recursive Feature Machine (Deep RFM) is a method that constructs a neural network
    by iteratively mapping the data with the AGOP and applying an untrained random
    feature map. We demonstrate empirically that DNC occurs in Deep RFM across standard
    settings as a consequence of the projection with the AGOP matrix computed at each
    layer. Further, we theoretically explain DNC in Deep RFM in an asymptotic setting
    and as a result of kernel learning. We then provide evidence that this mechanism
    holds for neural networks more generally. In particular, we show that the right
    singular vectors and values of the weights can be responsible for the majority
    of within-class variability collapse for DNNs trained in the feature learning
    regime. As observed in recent work, this singular structure is highly correlated
    with that of the AGOP.
acknowledgement: 'We acknowledge support from the National Science Foundation (NSF)
  and the Simons Foundation for the Collaboration on the Theoretical Foundations of
  Deep Learning through awards DMS-2031883 and #814639 as well as the TILOS institute
  (NSF CCF-2112665). This work used the programs (1) XSEDE (Extreme science and engineering
  discovery environment) which is supported by NSF grant numbers ACI-1548562, and
  (2) ACCESS (Advanced cyberinfrastructure coordination ecosystem: services & support)
  which is supported by NSF grants numbers #2138259, #2138286, #2138307, #2137603,
  and #2138296. Specifically, we used the resources from SDSC Expanse GPU compute
  nodes, and NCSA Delta system, via allocations TG-CIS220009. Marco Mondelli is supported
  by the 2019 Lopez-Loreta prize. We also acknowledge useful feedback from anonymous
  reviewers. '
alternative_title:
- Advances in Neural Information Processing Systems
article_processing_charge: No
arxiv: 1
author:
- first_name: Daniel
  full_name: Beaglehole, Daniel
  last_name: Beaglehole
- first_name: Peter
  full_name: Súkeník, Peter
  id: d64d6a8d-eb8e-11eb-b029-96fd216dec3c
  last_name: Súkeník
- first_name: Marco
  full_name: Mondelli, Marco
  id: 27EB676C-8706-11E9-9510-7717E6697425
  last_name: Mondelli
  orcid: 0000-0002-3242-7020
- first_name: Mikhail
  full_name: Belkin, Mikhail
  last_name: Belkin
citation:
  ama: 'Beaglehole D, Súkeník P, Mondelli M, Belkin M. Average gradient outer product
    as a mechanism for deep neural collapse. In: <i>38th Annual Conference on Neural
    Information Processing Systems</i>. Vol 37. Neural Information Processing Systems
    Foundation; 2024. doi:<a href="https://doi.org/10.52202/079017-4156">10.52202/079017-4156</a>'
  apa: 'Beaglehole, D., Súkeník, P., Mondelli, M., &#38; Belkin, M. (2024). Average
    gradient outer product as a mechanism for deep neural collapse. In <i>38th Annual
    Conference on Neural Information Processing Systems</i> (Vol. 37). Vancouver,
    Canada: Neural Information Processing Systems Foundation. <a href="https://doi.org/10.52202/079017-4156">https://doi.org/10.52202/079017-4156</a>'
  chicago: Beaglehole, Daniel, Peter Súkeník, Marco Mondelli, and Mikhail Belkin.
    “Average Gradient Outer Product as a Mechanism for Deep Neural Collapse.” In <i>38th
    Annual Conference on Neural Information Processing Systems</i>, Vol. 37. Neural
    Information Processing Systems Foundation, 2024. <a href="https://doi.org/10.52202/079017-4156">https://doi.org/10.52202/079017-4156</a>.
  ieee: D. Beaglehole, P. Súkeník, M. Mondelli, and M. Belkin, “Average gradient outer
    product as a mechanism for deep neural collapse,” in <i>38th Annual Conference
    on Neural Information Processing Systems</i>, Vancouver, Canada, 2024, vol. 37.
  ista: 'Beaglehole D, Súkeník P, Mondelli M, Belkin M. 2024. Average gradient outer
    product as a mechanism for deep neural collapse. 38th Annual Conference on Neural
    Information Processing Systems. NeurIPS: Neural Information Processing Systems,
    Advances in Neural Information Processing Systems, vol. 37.'
  mla: Beaglehole, Daniel, et al. “Average Gradient Outer Product as a Mechanism for
    Deep Neural Collapse.” <i>38th Annual Conference on Neural Information Processing
    Systems</i>, vol. 37, Neural Information Processing Systems Foundation, 2024,
    doi:<a href="https://doi.org/10.52202/079017-4156">10.52202/079017-4156</a>.
  short: D. Beaglehole, P. Súkeník, M. Mondelli, M. Belkin, in:, 38th Annual Conference
    on Neural Information Processing Systems, Neural Information Processing Systems
    Foundation, 2024.
conference:
  end_date: 2024-12-16
  location: Vancouver, Canada
  name: 'NeurIPS: Neural Information Processing Systems'
  start_date: 2024-12-16
corr_author: '1'
das_tickbox: '0'
date_created: 2025-01-27T11:11:40Z
date_published: 2024-12-01T00:00:00Z
date_updated: 2026-10-15T09:39:46Z
day: '01'
department:
- _id: GradSch
- _id: MaMo
doi: 10.52202/079017-4156
external_id:
  arxiv:
  - '2402.13728'
fulldoi: https://doi.org/10.52202/079017-4156
intvolume: '        37'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.52202/079017-4156
month: '12'
oa: 1
oa_version: Published Version
project:
- _id: 059876FA-7A3F-11EA-A408-12923DDC885E
  name: Prix Lopez-Loretta 2019 - Marco Mondelli
publication: 38th Annual Conference on Neural Information Processing Systems
publication_identifier:
  eissn:
  - 1049-5258
publication_status: published
publisher: Neural Information Processing Systems Foundation
quality_controlled: '1'
researchdata_availability: no
scopus_import: '1'
status: public
supplementarymaterial: no
title: Average gradient outer product as a mechanism for deep neural collapse
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 37
year: '2024'
...
---
OA_place: publisher
OA_type: free access
_id: '18875'
abstract:
- lang: eng
  text: Current state-of-the-art methods for differentially private model training
    are based on matrix factorization techniques. However, these methods suffer from
    high computational overhead because they require numerically solving a demanding
    optimization problem to determine an approximately optimal factorization prior
    to the actual model training. In this work, we present a new matrix factorization
    approach, BSR, which overcomes this computational bottleneck. By exploiting properties
    of the standard matrix square root, BSR allows to efficiently handle also large-scale
    problems. For the key scenario of stochastic gradient descent with momentum and
    weight decay, we even derive analytical expressions for BSR that render the computational
    overhead negligible. We prove bounds on the approximation quality that hold both
    in the centralized and in the federated learning setting. Our numerical experiments
    demonstrate that models trained using BSR perform on par with the best existing
    methods, while completely avoiding their computational overhead.
alternative_title:
- Advances in Neural Information Processing Systems
article_processing_charge: No
arxiv: 1
author:
- first_name: Nikita
  full_name: Kalinin, Nikita
  id: 4b14526e-14d2-11ed-ba64-c14c9553d137
  last_name: Kalinin
- first_name: Christoph
  full_name: Lampert, Christoph
  id: 40C20FD2-F248-11E8-B48F-1D18A9856A87
  last_name: Lampert
  orcid: 0000-0001-8622-7887
citation:
  ama: 'Kalinin N, Lampert C. Banded square root matrix factorization for differentially
    private model training. In: <i>38th Annual Conference on Neural Information Processing
    Systems</i>. Vol 37. Neural Information Processing Systems Foundation; 2024. doi:<a
    href="https://doi.org/10.52202/079017-0560">10.52202/079017-0560</a>'
  apa: 'Kalinin, N., &#38; Lampert, C. (2024). Banded square root matrix factorization
    for differentially private model training. In <i>38th Annual Conference on Neural
    Information Processing Systems</i> (Vol. 37). Vancouver, Canada: Neural Information
    Processing Systems Foundation. <a href="https://doi.org/10.52202/079017-0560">https://doi.org/10.52202/079017-0560</a>'
  chicago: Kalinin, Nikita, and Christoph Lampert. “Banded Square Root Matrix Factorization
    for Differentially Private Model Training.” In <i>38th Annual Conference on Neural
    Information Processing Systems</i>, Vol. 37. Neural Information Processing Systems
    Foundation, 2024. <a href="https://doi.org/10.52202/079017-0560">https://doi.org/10.52202/079017-0560</a>.
  ieee: N. Kalinin and C. Lampert, “Banded square root matrix factorization for differentially
    private model training,” in <i>38th Annual Conference on Neural Information Processing
    Systems</i>, Vancouver, Canada, 2024, vol. 37.
  ista: 'Kalinin N, Lampert C. 2024. Banded square root matrix factorization for differentially
    private model training. 38th Annual Conference on Neural Information Processing
    Systems. NeurIPS: Neural Information Processing Systems, Advances in Neural Information
    Processing Systems, vol. 37.'
  mla: Kalinin, Nikita, and Christoph Lampert. “Banded Square Root Matrix Factorization
    for Differentially Private Model Training.” <i>38th Annual Conference on Neural
    Information Processing Systems</i>, vol. 37, Neural Information Processing Systems
    Foundation, 2024, doi:<a href="https://doi.org/10.52202/079017-0560">10.52202/079017-0560</a>.
  short: N. Kalinin, C. Lampert, in:, 38th Annual Conference on Neural Information
    Processing Systems, Neural Information Processing Systems Foundation, 2024.
conference:
  end_date: 2024-12-16
  location: Vancouver, Canada
  name: 'NeurIPS: Neural Information Processing Systems'
  start_date: 2024-12-16
corr_author: '1'
das_tickbox: '0'
date_created: 2025-01-24T17:58:16Z
date_published: 2024-12-01T00:00:00Z
date_updated: 2026-10-15T09:38:13Z
day: '01'
ddc:
- '000'
department:
- _id: GradSch
- _id: ChLa
doi: 10.52202/079017-0560
external_id:
  arxiv:
  - '2405.13763'
fulldoi: https://doi.org/10.52202/079017-0560
has_accepted_license: '1'
intvolume: '        37'
language:
- iso: eng
main_file_link:
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  url: https://doi.org/10.52202/079017-0560
month: '12'
oa: 1
oa_version: Published Version
publication: 38th Annual Conference on Neural Information Processing Systems
publication_identifier:
  eissn:
  - 1049-5258
publication_status: published
publisher: Neural Information Processing Systems Foundation
quality_controlled: '1'
researchdata_availability: no
scopus_import: '1'
status: public
supplementarymaterial: no
title: Banded square root matrix factorization for differentially private model training
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 37
year: '2024'
...
---
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '18760'
abstract:
- lang: eng
  text: With the remarkable sensitivity and resolution of JWST in the infrared, measuring
    rest-optical kinematics of galaxies at z > 5 has become possible for the first
    time. This study pilots a new method for measuring galaxy dynamics for highly
    multiplexed, unbiased samples by combining FRESCO NIRCam grism spectroscopy and
    JADES medium-band imaging. Here we present one of the first JWST kinematic measurements
    for a galaxy at z > 5. We find a significant velocity gradient, which, if interpreted
    as rotation, yields Vrot = 305 ± 70 km s−1, and we hence refer to this galaxy
    as Twister-z5. With a rest-frame optical effective radius of re = 2.25 kpc, the
    high rotation velocity in this galaxy is not due to a compact size, as may be
    expected in the early Universe, but rather to a high total mass, (math formula).
    This is a factor of roughly 10× higher than the stellar mass within re. We also
    observe that the radial Hα equivalent width profile and the specific star formation
    rate map from resolved stellar population modeling are centrally depressed by
    a factor of ∼1.5 from the center to re. Combined with the morphology of the line-emitting
    gas in comparison to the continuum, this centrally suppressed star formation is
    consistent with a star-forming disk surrounding a bulge growing inside out. While
    large, rapidly rotating disks are common to z ∼ 2, the existence of one after
    only 1 Gyr of cosmic time, shown for the first time in ionized gas, adds to the
    growing evidence that some galaxies matured earlier than expected in the history
    of the Universe.
acknowledgement: We thank the reviewer and editorial staff for their excellent feedback
  and effort—the manuscript is much stronger as a result. Support for this work was
  provided by NASA through grant JWST-GO-01895 awarded by the Space Telescope Science
  Institute, which is operated by the Association of Universities for Research in
  Astronomy, Inc., under NASA contract NAS 5-26555. H.Ü. gratefully acknowledges support
  by the Isaac Newton Trust and by the Kavli Foundation through a Newton-Kavli Junior
  Fellowship. This work has received funding from the Swiss State Secretariat for
  Education, Research and Innovation (SERI) under contract No. MB22.00072, as well
  as from the Swiss National Science Foundation (SNSF) through project grant 200020_207349.
  The Cosmic Dawn Center (DAWN) is funded by the Danish National Research Foundation
  under grant No. 140. R.S. acknowledges an STFC Ernest Rutherford Fellowship (ST/S004831/1).
  R.P.N. acknowledges support for this work provided by NASA through the NASA Hubble
  Fellowship grant HST-HF2-51515.001-A awarded by the Space Telescope Science Institute,
  which is operated by the Association of Universities for Research in Astronomy,
  Inc., under NASA contract NAS5-26555. M.V.M. acknowledges support from the National
  Science Foundation via AAG grant 2205519 and the Wisconsin Alumni Research Foundation
  via grant MSN251397. R.M. also acknowledges funding from a research professorship
  from the Royal Society. A.J.B., A.J.C., and G.C.J. acknowledge funding from the
  "FirstGalaxies" Advanced Grant from the European Research Council (ERC) under the
  European Union's Horizon 2020 research and innovation program (grant agreement No.
  789056). I.L. acknowledges support by the Australian Research Council through Future
  Fellowship FT220100798. D.J.E. is supported as a Simons Investigator and by a JWST/NIRCam
  contract to the University of Arizona, NAS5-02015. R.M., J.W., L.S., and W.B. acknowledge
  support by the Science and Technology Facilities Council (STFC), the ERC through
  advanced grant 695671 "QUENCH," and the UKRI Frontier Research grant RISEandFALL.
  B.E.R. acknowledges support from the NIRCam Science Team contract to the University
  of Arizona, NAS5-02015. The research of C.C.W. is supported by NOIRLab, which is
  managed by the Association of Universities for Research in Astronomy (AURA) under
  a cooperative agreement with the National Science Foundation. The HST and JWST image
  mosaics of the FRESCO fields are released at MAST as a High Level Science Product
  (P. Oesch & D. Magee 2023).
article_number: L27
article_processing_charge: Yes
article_type: letter_note
arxiv: 1
author:
- first_name: Erica
  full_name: Nelson, Erica
  last_name: Nelson
- first_name: Gabriel
  full_name: Brammer, Gabriel
  last_name: Brammer
- first_name: Clara
  full_name: Giménez-Arteaga, Clara
  last_name: Giménez-Arteaga
- first_name: Pascal A.
  full_name: Oesch, Pascal A.
  last_name: Oesch
- first_name: Rohan P.
  full_name: Naidu, Rohan P.
  last_name: Naidu
- first_name: Hannah
  full_name: Übler, Hannah
  last_name: Übler
- first_name: Jasleen
  full_name: Matharu, Jasleen
  last_name: Matharu
- first_name: Alice E.
  full_name: Shapley, Alice E.
  last_name: Shapley
- first_name: Katherine E.
  full_name: Whitaker, Katherine E.
  last_name: Whitaker
- first_name: Emily
  full_name: Wisnioski, Emily
  last_name: Wisnioski
- first_name: Natascha M.
  full_name: Förster Schreiber, Natascha M.
  last_name: Förster Schreiber
- first_name: Renske
  full_name: Smit, Renske
  last_name: Smit
- first_name: Pieter
  full_name: Van Dokkum, Pieter
  last_name: Van Dokkum
- first_name: John
  full_name: Chisholm, John
  last_name: Chisholm
- first_name: Ryan
  full_name: Endsley, Ryan
  last_name: Endsley
- first_name: Abigail I.
  full_name: Hartley, Abigail I.
  last_name: Hartley
- first_name: Justus
  full_name: Gibson, Justus
  last_name: Gibson
- first_name: Emma
  full_name: Giovinazzo, Emma
  last_name: Giovinazzo
- first_name: Garth
  full_name: Illingworth, Garth
  last_name: Illingworth
- first_name: Ivo
  full_name: Labbe, Ivo
  last_name: Labbe
- first_name: Michael V.
  full_name: Maseda, Michael V.
  last_name: Maseda
- first_name: Jorryt J
  full_name: Matthee, Jorryt J
  id: 7439a258-f3c0-11ec-9501-9df22fe06720
  last_name: Matthee
  orcid: 0000-0003-2871-127X
- first_name: Alba
  full_name: Covelo Paz, Alba
  last_name: Covelo Paz
- first_name: Sedona H.
  full_name: Price, Sedona H.
  last_name: Price
- first_name: Naveen A.
  full_name: Reddy, Naveen A.
  last_name: Reddy
- first_name: Irene
  full_name: Shivaei, Irene
  last_name: Shivaei
- first_name: Andrea
  full_name: Weibel, Andrea
  last_name: Weibel
- first_name: Stijn
  full_name: Wuyts, Stijn
  last_name: Wuyts
- first_name: Mengyuan
  full_name: Xiao, Mengyuan
  last_name: Xiao
- first_name: Stacey
  full_name: Alberts, Stacey
  last_name: Alberts
- first_name: William M.
  full_name: Baker, William M.
  last_name: Baker
- first_name: Andrew J.
  full_name: Bunker, Andrew J.
  last_name: Bunker
- first_name: Alex J.
  full_name: Cameron, Alex J.
  last_name: Cameron
- first_name: Stephane
  full_name: Charlot, Stephane
  last_name: Charlot
- first_name: Daniel J.
  full_name: Eisenstein, Daniel J.
  last_name: Eisenstein
- first_name: Anna
  full_name: De Graaff, Anna
  last_name: De Graaff
- first_name: Zhiyuan
  full_name: Ji, Zhiyuan
  last_name: Ji
- first_name: Benjamin D.
  full_name: Johnson, Benjamin D.
  last_name: Johnson
- first_name: Gareth C.
  full_name: Jones, Gareth C.
  last_name: Jones
- first_name: Roberto
  full_name: Maiolino, Roberto
  last_name: Maiolino
- first_name: Brant
  full_name: Robertson, Brant
  last_name: Robertson
- first_name: Lester
  full_name: Sandles, Lester
  last_name: Sandles
- first_name: Katherine A.
  full_name: Suess, Katherine A.
  last_name: Suess
- first_name: Sandro
  full_name: Tacchella, Sandro
  last_name: Tacchella
- first_name: Christina C.
  full_name: Williams, Christina C.
  last_name: Williams
- first_name: Joris
  full_name: Witstok, Joris
  last_name: Witstok
citation:
  ama: 'Nelson E, Brammer G, Giménez-Arteaga C, et al. Ionized gas kinematics with
    FRESCO: An extended, massive, rapidly rotating galaxy at z = 5.4. <i>Astrophysical
    Journal Letters</i>. 2024;976(2). doi:<a href="https://doi.org/10.3847/2041-8213/ad7b17">10.3847/2041-8213/ad7b17</a>'
  apa: 'Nelson, E., Brammer, G., Giménez-Arteaga, C., Oesch, P. A., Naidu, R. P.,
    Übler, H., … Witstok, J. (2024). Ionized gas kinematics with FRESCO: An extended,
    massive, rapidly rotating galaxy at z = 5.4. <i>Astrophysical Journal Letters</i>.
    IOP Publishing. <a href="https://doi.org/10.3847/2041-8213/ad7b17">https://doi.org/10.3847/2041-8213/ad7b17</a>'
  chicago: 'Nelson, Erica, Gabriel Brammer, Clara Giménez-Arteaga, Pascal A. Oesch,
    Rohan P. Naidu, Hannah Übler, Jasleen Matharu, et al. “Ionized Gas Kinematics
    with FRESCO: An Extended, Massive, Rapidly Rotating Galaxy at z = 5.4.” <i>Astrophysical
    Journal Letters</i>. IOP Publishing, 2024. <a href="https://doi.org/10.3847/2041-8213/ad7b17">https://doi.org/10.3847/2041-8213/ad7b17</a>.'
  ieee: 'E. Nelson <i>et al.</i>, “Ionized gas kinematics with FRESCO: An extended,
    massive, rapidly rotating galaxy at z = 5.4,” <i>Astrophysical Journal Letters</i>,
    vol. 976, no. 2. IOP Publishing, 2024.'
  ista: 'Nelson E, Brammer G, Giménez-Arteaga C, Oesch PA, Naidu RP, Übler H, Matharu
    J, Shapley AE, Whitaker KE, Wisnioski E, Förster Schreiber NM, Smit R, Van Dokkum
    P, Chisholm J, Endsley R, Hartley AI, Gibson J, Giovinazzo E, Illingworth G, Labbe
    I, Maseda MV, Matthee JJ, Covelo Paz A, Price SH, Reddy NA, Shivaei I, Weibel
    A, Wuyts S, Xiao M, Alberts S, Baker WM, Bunker AJ, Cameron AJ, Charlot S, Eisenstein
    DJ, De Graaff A, Ji Z, Johnson BD, Jones GC, Maiolino R, Robertson B, Sandles
    L, Suess KA, Tacchella S, Williams CC, Witstok J. 2024. Ionized gas kinematics
    with FRESCO: An extended, massive, rapidly rotating galaxy at z = 5.4. Astrophysical
    Journal Letters. 976(2), L27.'
  mla: 'Nelson, Erica, et al. “Ionized Gas Kinematics with FRESCO: An Extended, Massive,
    Rapidly Rotating Galaxy at z = 5.4.” <i>Astrophysical Journal Letters</i>, vol.
    976, no. 2, L27, IOP Publishing, 2024, doi:<a href="https://doi.org/10.3847/2041-8213/ad7b17">10.3847/2041-8213/ad7b17</a>.'
  short: E. Nelson, G. Brammer, C. Giménez-Arteaga, P.A. Oesch, R.P. Naidu, H. Übler,
    J. Matharu, A.E. Shapley, K.E. Whitaker, E. Wisnioski, N.M. Förster Schreiber,
    R. Smit, P. Van Dokkum, J. Chisholm, R. Endsley, A.I. Hartley, J. Gibson, E. Giovinazzo,
    G. Illingworth, I. Labbe, M.V. Maseda, J.J. Matthee, A. Covelo Paz, S.H. Price,
    N.A. Reddy, I. Shivaei, A. Weibel, S. Wuyts, M. Xiao, S. Alberts, W.M. Baker,
    A.J. Bunker, A.J. Cameron, S. Charlot, D.J. Eisenstein, A. De Graaff, Z. Ji, B.D.
    Johnson, G.C. Jones, R. Maiolino, B. Robertson, L. Sandles, K.A. Suess, S. Tacchella,
    C.C. Williams, J. Witstok, Astrophysical Journal Letters 976 (2024).
das_tickbox: '0'
date_created: 2025-01-05T23:01:58Z
date_published: 2024-12-01T00:00:00Z
date_updated: 2026-10-15T09:41:31Z
day: '01'
ddc:
- '520'
department:
- _id: JoMa
doi: 10.3847/2041-8213/ad7b17
external_id:
  arxiv:
  - '2310.06887'
  isi:
  - '001364636000001'
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isi: 1
issue: '2'
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
publication: Astrophysical Journal Letters
publication_identifier:
  eissn:
  - 2041-8213
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  - 2041-8205
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
researchdata_availability: no
scopus_import: '1'
status: public
supplementarymaterial: no
title: 'Ionized gas kinematics with FRESCO: An extended, massive, rapidly rotating
  galaxy at z = 5.4'
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user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
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...
