---
res:
  bibo_abstract:
  - The previously inaccessible star formation tracer Paschen-Alpha (Paα) can now
    be spatially resolved by JWST NIRCam slitless spectroscopy in distant galaxies
    up to cosmic noon. In the first study of its kind, we combine JWST NGDEEP NIRISS
    and FRESCO NIRCam slitless spectroscopy to provide the first direct comparison
    of spatially resolved dust-obscured (traced by Paα) versus unobscured (traced
    by Hα) star formation across the main sequence. We stacked Paα and Hα emission-line
    maps, along with stellar continuum images at both wavelengths of 31 galaxies at
    1 < z < 1.8 in three bins of stellar mass spanning 7.7 ≤ log(M*/M⊙) < 11. Surface
    brightness profiles were measured and equivalent width (EW) profiles computed.
    Increasing Paα and Hα EW profiles with galactocentric radius across all stellar
    masses probed provides direct evidence for the inside-out growth of galaxies both
    via dust-obscured and unobscured star formation for the first time. For galaxies
    predominantly on the main sequence (log(M*/M⊙)≥8.8), a weakly positive (0.1 ± 0.1)
    Paα/Hα line profile gradient as a function of radius is found at 8.8 ≤ log(M*/M⊙)
    < 9.9, with a negative (−0.4 ± 0.1) Paα/Hα line profile gradient as a function
    of radius found at the highest stellar masses of 9.9 ≤ log(M*/M⊙) < 11.0. Low-mass
    galaxies (7.7 ≤ log(M*/M⊙) < 8.8) with predominantly high specific star formation
    rates relative to the main sequence are also found to have a negative (−0.5 ± 0.1)
    Paα/Hα line profile gradient as a function of radius. Our results demonstrate
    that while inside-out growth via star formation is ubiquitous across the main
    sequence just after cosmic noon, centrally concentrated dust attenuation is not.
    Along with other recent work in the literature, our findings now motivate future
    studies of resolved SFR and dust attenuation profiles in large samples of individual
    cosmic noon galaxies across the main sequence, aimed at understanding the intrinsic
    scatter in spatially resolved star formation.@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Jasleen
      foaf_name: Matharu, Jasleen
      foaf_surname: Matharu
  - foaf_Person:
      foaf_givenName: Lu
      foaf_name: Shen, Lu
      foaf_surname: Shen
  - foaf_Person:
      foaf_givenName: Irene
      foaf_name: Shivaei, Irene
      foaf_surname: Shivaei
  - foaf_Person:
      foaf_givenName: Pascal A.
      foaf_name: Oesch, Pascal A.
      foaf_surname: Oesch
  - foaf_Person:
      foaf_givenName: Casey
      foaf_name: Papovich, Casey
      foaf_surname: Papovich
  - foaf_Person:
      foaf_givenName: Gabriel
      foaf_name: Brammer, Gabriel
      foaf_surname: Brammer
  - foaf_Person:
      foaf_givenName: Naveen A.
      foaf_name: Reddy, Naveen A.
      foaf_surname: Reddy
  - foaf_Person:
      foaf_givenName: Yingjie
      foaf_name: Cheng, Yingjie
      foaf_surname: Cheng
  - foaf_Person:
      foaf_givenName: Pieter
      foaf_name: Van Dokkum, Pieter
      foaf_surname: Van Dokkum
  - foaf_Person:
      foaf_givenName: Steven L.
      foaf_name: Finkelstein, Steven L.
      foaf_surname: Finkelstein
  - foaf_Person:
      foaf_givenName: Nimish P.
      foaf_name: Hathi, Nimish P.
      foaf_surname: Hathi
  - foaf_Person:
      foaf_givenName: Jeyhan S.
      foaf_name: Kartaltepe, Jeyhan S.
      foaf_surname: Kartaltepe
  - foaf_Person:
      foaf_givenName: Anton M.
      foaf_name: Koekemoer, Anton M.
      foaf_surname: Koekemoer
  - 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: Nor
      foaf_name: Pirzkal, Nor
      foaf_surname: Pirzkal
  - foaf_Person:
      foaf_givenName: Stephen M.
      foaf_name: Wilkins, Stephen M.
      foaf_surname: Wilkins
  - foaf_Person:
      foaf_givenName: Michael A.
      foaf_name: Wozniak, Michael A.
      foaf_surname: Wozniak
  - foaf_Person:
      foaf_givenName: Mengyuan
      foaf_name: Xiao, Mengyuan
      foaf_surname: Xiao
  bibo_doi: 10.1051/0004-6361/202558205
  bibo_volume: 708
  dct_date: 2026^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/0004-6361
  - http://id.crossref.org/issn/1432-0746
  dct_language: eng
  dct_publisher: EDP Sciences@
  dct_title: A first look at a complete view of spatially resolved star formation
    at 1  <  z  <  1.8 with JWST NGDEEP+FRESCO slitless spectroscopy@
...