---
res:
  bibo_abstract:
  - 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.@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Jorryt J
      foaf_name: Matthee, Jorryt J
      foaf_surname: Matthee
      foaf_workInfoHomepage: http://www.librecat.org/personId=7439a258-f3c0-11ec-9501-9df22fe06720
    orcid: 0000-0003-2871-127X
  - foaf_Person:
      foaf_givenName: Rohan P.
      foaf_name: Naidu, Rohan P.
      foaf_surname: Naidu
  - foaf_Person:
      foaf_givenName: Gabriel
      foaf_name: Brammer, Gabriel
      foaf_surname: Brammer
  - foaf_Person:
      foaf_givenName: John
      foaf_name: Chisholm, John
      foaf_surname: Chisholm
  - foaf_Person:
      foaf_givenName: Anna-Christina
      foaf_name: Eilers, Anna-Christina
      foaf_surname: Eilers
  - foaf_Person:
      foaf_givenName: Andy
      foaf_name: Goulding, Andy
      foaf_surname: Goulding
  - foaf_Person:
      foaf_givenName: Jenny
      foaf_name: Greene, Jenny
      foaf_surname: Greene
  - foaf_Person:
      foaf_givenName: Daichi
      foaf_name: Kashino, Daichi
      foaf_surname: Kashino
  - foaf_Person:
      foaf_givenName: Ivo
      foaf_name: Labbe, Ivo
      foaf_surname: Labbe
  - foaf_Person:
      foaf_givenName: Simon J.
      foaf_name: Lilly, Simon J.
      foaf_surname: Lilly
  - foaf_Person:
      foaf_givenName: Ruari
      foaf_name: Mackenzie, Ruari
      foaf_surname: Mackenzie
  - foaf_Person:
      foaf_givenName: Pascal A.
      foaf_name: Oesch, Pascal A.
      foaf_surname: Oesch
  - foaf_Person:
      foaf_givenName: Andrea
      foaf_name: Weibel, Andrea
      foaf_surname: Weibel
  - foaf_Person:
      foaf_givenName: Stijn
      foaf_name: Wuyts, Stijn
      foaf_surname: Wuyts
  - foaf_Person:
      foaf_givenName: Mengyuan
      foaf_name: Xiao, Mengyuan
      foaf_surname: Xiao
  - foaf_Person:
      foaf_givenName: Rongmon
      foaf_name: Bordoloi, Rongmon
      foaf_surname: Bordoloi
  - foaf_Person:
      foaf_givenName: Rychard
      foaf_name: Bouwens, Rychard
      foaf_surname: Bouwens
  - foaf_Person:
      foaf_givenName: Pieter
      foaf_name: van Dokkum, Pieter
      foaf_surname: van Dokkum
  - foaf_Person:
      foaf_givenName: Garth
      foaf_name: Illingworth, Garth
      foaf_surname: Illingworth
  - foaf_Person:
      foaf_givenName: Ivan
      foaf_name: Kramarenko, Ivan
      foaf_surname: Kramarenko
  - foaf_Person:
      foaf_givenName: Michael V.
      foaf_name: Maseda, Michael V.
      foaf_surname: Maseda
  - foaf_Person:
      foaf_givenName: Charlotte
      foaf_name: Mason, Charlotte
      foaf_surname: Mason
  - foaf_Person:
      foaf_givenName: Romain A.
      foaf_name: Meyer, Romain A.
      foaf_surname: Meyer
  - foaf_Person:
      foaf_givenName: Erica J.
      foaf_name: Nelson, Erica J.
      foaf_surname: Nelson
  - foaf_Person:
      foaf_givenName: Naveen A.
      foaf_name: Reddy, Naveen A.
      foaf_surname: Reddy
  - foaf_Person:
      foaf_givenName: Irene
      foaf_name: Shivaei, Irene
      foaf_surname: Shivaei
  - foaf_Person:
      foaf_givenName: Robert A.
      foaf_name: Simcoe, Robert A.
      foaf_surname: Simcoe
  - foaf_Person:
      foaf_givenName: Minghao
      foaf_name: Yue, Minghao
      foaf_surname: Yue
  bibo_doi: 10.3847/1538-4357/ad2345
  bibo_issue: '2'
  bibo_volume: 963
  dct_date: 2024^xs_gYear
  dct_identifier:
  - UT:001184703600001
  dct_isPartOf:
  - http://id.crossref.org/issn/0004-637X
  - http://id.crossref.org/issn/1538-4357
  dct_language: eng
  dct_publisher: IOP Publishing@
  dct_subject:
  - Space and Planetary Science
  - Astronomy and Astrophysics
  dct_title: 'Little Red Dots: An abundant population of faint active galactic nuclei
    at z ∼ 5 revealed by the EIGER and FRESCO JWST surveys@'
...