Unveiling the nature of infrared bright, optically dark galaxies with early <i>JWST</i> data

DOI DOI DOI HANDLE HANDLE ほか1件をすべて表示 一部だけ表示 被引用文献8件 オープンアクセス
  • L Barrufet
    Department of Astronomy, University of Geneva , Chemin Pegasi 51, CH-1290 Versoix, Switzerland
  • P A Oesch
    Department of Astronomy, University of Geneva , Chemin Pegasi 51, CH-1290 Versoix, Switzerland
  • A Weibel
    Department of Astronomy, University of Geneva , Chemin Pegasi 51, CH-1290 Versoix, Switzerland
  • G Brammer
    Cosmic Dawn Center (DAWN), Niels Bohr Institute, University of Copenhagen , Jagtvej 128, DK-2200 København N, Denmark
  • R Bezanson
    Department of Physics and Astronomy and PITT PACC, University of Pittsburgh , Pittsburgh, PA 15260, USA
  • R Bouwens
    Leiden Observatory, Leiden University , PO Box 9500, NL-2300 RA Leiden, the Netherlands
  • Y Fudamoto
    Waseda Research Institute for Science and Engineering, Faculty of Science and Engineering, Waseda University , 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
  • V Gonzalez
    Departamento de Astronomia, Universidad de Chile , Camino del Observatorio 1515, Las Condes, Santiago 7591245, Chile
  • R Gottumukkala
    Department of Astronomy, University of Geneva , Chemin Pegasi 51, CH-1290 Versoix, Switzerland
  • G Illingworth
    Department of Astronomy and Astrophysics, University of California , Santa Cruz, CA 95064, USA
  • K E Heintz
    Cosmic Dawn Center (DAWN), Niels Bohr Institute, University of Copenhagen , Jagtvej 128, DK-2200 København N, Denmark
  • B Holden
    Department of Astronomy and Astrophysics, University of California , Santa Cruz, CA 95064, USA
  • I Labbe
    Centre for Astrophysics and Supercomputing, Swinburne University of Technology , Melbourne, VIC 3122, Australia
  • D Magee
    Department of Astronomy and Astrophysics, University of California , Santa Cruz, CA 95064, USA
  • R P Naidu
    Center for Astrophysics | Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138, USA
  • E Nelson
    Department for Astrophysical and Planetary Science, University of Colorado , Boulder, CO 80309, USA
  • M Stefanon
    Departament d’Astronomia i Astrofisica, Universitat de Valencia , C. Dr Moliner 50, E-46100 Burjassot, Valencia, Spain
  • R Smit
    Astrophysics Research Institute, Liverpool John Moores University , 146 Brownlow Hill, Liverpool L3 5RF, UK
  • P van Dokkum
    Astronomy Department, Yale University , 52 Hillhouse Avenue, New Haven, CT 06511, USA
  • J R Weaver
    Department of Astronomy, University of Massachusetts , Amherst, MA 01003, USA
  • C C Williams
    NSF’s National Optical–Infrared Astronomy Research Laboratory , 950 North Cherry Avenue, Tucson, AZ 85719, USA
  • Swinburne University of Technology

書誌事項

公開日
2023-03-29
権利情報
  • https://creativecommons.org/licenses/by/4.0/
DOI
  • 10.1093/mnras/stad947
  • 10.48550/arxiv.2207.14733
  • 10.7275/2254
公開者
Oxford University Press (OUP)

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<jats:title>ABSTRACT</jats:title> <jats:p>Over the last few years, both Atacama Large Millimeter/submillimeter Array (ALMA) and Spitzer observations have revealed a population of likely massive galaxies at z &gt; 3 that was too faint to be detected inHubble Space Telescope(HST) rest-frame ultraviolet imaging. However, due to the very limited photometry for individual galaxies, the true nature of these so-called HST-dark galaxies has remained elusive. Here, we present the first sample of such galaxies observed with very deep, high-resolution NIRCam imaging from the Early Release Science programme CEERS. 30 HST-dark sources are selected based on their red colours across 1.6–4.4 $\mu$m. Their physical properties are derived from 12-band multiwavelength photometry, including ancillary HST imaging. We find that these galaxies are generally heavily dust-obscured (AV ∼ 2 mag), massive (log (M/M⊙) ∼ 10), star-forming sources at z ∼ 2−8 with an observed surface density of ∼0.8 arcmin−2. This suggests that an important fraction of massive galaxies may have been missing from our cosmic census at z &gt; 3 all the way into the Epoch of Reionization. The HST-dark sources lie on the main sequence of galaxies and add an obscured star formation rate density of $\mathrm{3.2^{+1.8}_{-1.3} \times 10^{-3} \,{\rm M}_{\odot }\,yr^{-1}\,Mpc^{-3}}$ at z ∼ 7, showing likely presence of dust in the Epoch of Reionization. Our analysis shows the unique power of JWST to reveal this previously missing galaxy population and to provide a more complete census of galaxies at z = 2−8 based on rest-frame optical imaging.</jats:p>

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