The ALMA REBELS Survey: discovery of a massive, highly star-forming, and morphologically complex ULIRG at <i>z</i> = 7.31

DOI DOI HANDLE HANDLE HANDLE ほか4件をすべて表示 一部だけ表示 被引用文献9件 参考文献154件 オープンアクセス
  • A P S Hygate
    Leiden Observatory, Leiden University , P.O. Box 9513, NL-2300 RA Leiden , the Netherlands
  • J A Hodge
    Leiden Observatory, Leiden University , P.O. Box 9513, NL-2300 RA Leiden , the Netherlands
  • E da Cunha
    International Centre for Radio Astronomy Research, University of Western Australia , 35 Stirling Hwy, Crawley, WA 6009 , Australia
  • M Rybak
    Faculty of Electrical Engineering, Mathematics and Computer Science, Delft University of Technology , Mekelweg 4, 2628 CD Delft , the Netherlands
  • S Schouws
    Leiden Observatory, Leiden University , P.O. Box 9513, NL-2300 RA Leiden , the Netherlands
  • H Inami
    Hiroshima Astrophysical Science Center, Hiroshima University , 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526 , Japan
  • M Stefanon
    Leiden Observatory, Leiden University , P.O. Box 9513, NL-2300 RA Leiden , the Netherlands
  • L Graziani
    Dipartimento di Fisica, Sapienza, Università di Roma , Piazzale Aldo Moro 5, I-00185 Roma , Italy
  • R Schneider
    Dipartimento di Fisica, Sapienza, Università di Roma , Piazzale Aldo Moro 5, I-00185 Roma , Italy
  • P Dayal
    Kapteyn Astronomical Institute, University of Groningen , NL-9700 AV Groningen , the Netherlands
  • R J Bouwens
    Leiden Observatory, Leiden University , P.O. Box 9513, NL-2300 RA Leiden , the Netherlands
  • R Smit
    Astrophysics Research Institute, Liverpool John Moores University , 146 Brownlow Hill, Liverpool L3 5RF , UK
  • R A A Bowler
    Jodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, School of Natural Sciences, The University of Manchester , Manchester M13 9PL , UK
  • R Endsley
    Steward Observatory, University of Arizona , 933 N Cherry Ave, Tucson, AZ 85721 , USA
  • V Gonzalez
    Departmento de Astronomia, Universidad de Chile , Casilla 36-D, Santiago 7591245 , Chile
  • P A Oesch
    Observatoire de Genève , CH-1290 Versoix , Switzerland
  • D P Stark
    Steward Observatory, University of Arizona , 933 N Cherry Ave, Tucson, AZ 85721 , USA
  • H S B Algera
    Hiroshima Astrophysical Science Center, Hiroshima University , 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526 , Japan
  • M Aravena
    Facultad de Ingenieria y Ciencias, Nucleo de Astronomia, Universidad Diego Portales , Av. Ejercito 441, Santiago , Chile
  • L Barrufet
    Observatoire de Genève , CH-1290 Versoix , Switzerland
  • A Ferrara
    Scuola Normale Superiore , Piazza dei Cavalieri 7, I-50126 Pisa , Italy
  • Y Fudamoto
    Faculty of Science and Engineering, Waseda Research Institute for Science and Engineering, Waseda University , 3-4-1 Okubo, Shinjuku, Tokyo 169-8555 , Japan
  • J H A Hilhorst
    Leiden Observatory, Leiden University , P.O. Box 9513, NL-2300 RA Leiden , the Netherlands
  • I De Looze
    Sterrenkundig Observatorium, Ghent University , Krijgslaan 281-S9, B-9000 Gent , Belgium
  • T Nanayakkara
    Centre for Astrophysics and Supercomputing, Swinburne University of Technology , PO Box 218, Hawthorn, VIC 3112 , Australia
  • A Pallottini
    Scuola Normale Superiore , Piazza dei Cavalieri 7, I-50126 Pisa , Italy
  • D A Riechers
    I. Physikalisches Institut, Universität zu Köln , Zülpicher Strasse 77, D-50937 Köln , Germany
  • L Sommovigo
    Scuola Normale Superiore , Piazza dei Cavalieri 7, I-50126 Pisa , Italy
  • M W Topping
    Steward Observatory, University of Arizona , 933 N Cherry Ave, Tucson, AZ 85721 , USA
  • P van der Werf
    Leiden Observatory, Leiden University , P.O. Box 9513, NL-2300 RA Leiden , the Netherlands
  • Swinburne University of Technology

書誌事項

公開日
2023-05-09
資源種別
journal article
権利情報
  • https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model
DOI
  • 10.1093/mnras/stad1212
  • 10.48550/arxiv.2304.09206
公開者
Oxford University Press (OUP)

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説明

<jats:title>ABSTRACT</jats:title> <jats:p>We present Atacama Large Millimeter/Submillimeter Array (ALMA) [C ii] and ∼158 $\rm \mu m$ continuum observations of REBELS-25, a massive, morphologically complex ultra-luminous infrared galaxy (ULIRG; LIR = $1.5^{+0.8}_{-0.5} \times 10^{12}$ L⊙) at z = 7.31, spectroscopically confirmed by the Reionization Era Bright Emission Line Survey (REBELS) ALMA Large Programme. REBELS-25 has a significant stellar mass of $M_{*} = \mbox{$ 8^{+4}_{-2} \times 10^{9} $}{} ~\mbox{M$_\odot $}{}$. From dust-continuum and ultraviolet observations, we determine a total obscured + unobscured star formation rate of SFR $= \mbox{$199^{+101}_{-63}$}{} ~ \mbox{M$_\odot $}~ \mbox{${\rm yr}$}^{-1}$. This is about four times the SFR estimated from an extrapolated main sequence. We also infer a [C ii]-based molecular gas mass of $M_{{\rm H}_{2}} = \mbox{$5.1^{+5.1}_{-2.6} \times 10^{10}$}{} ~\mbox{M$_\odot $}{}$, implying a molecular gas depletion time of $t_{\rm depl, {\rm H}_{2}} = \mbox{$0.3^{+0.3}_{-0.2} $}{}$ Gyr. We observe a [C ii] velocity gradient consistent with disc rotation, but given the current resolution we cannot rule out a more complex velocity structure such as a merger. The spectrum exhibits excess [C ii] emission at large positive velocities (∼500 km s−1), which we interpret as either a merging companion or an outflow. In the outflow scenario, we derive a lower limit of the mass outflow rate of 200 $\mbox{M$_\odot $}~ \mbox{${\rm yr}$}^{-1}$, which is consistent with expectations for a star-formation-driven outflow. Given its large stellar mass, SFR, and molecular gas reservoir ∼700 Myr after the big bang, we explore the future evolution of REBELS-25. Considering a simple, conservative model assuming an exponentially declining star formation history, constant star formation efficiency, and no additional gas inflow, we find that REBELS-25 has the potential to evolve into a galaxy consistent with the properties of high-mass quiescent galaxies recently observed at z ∼ 4.</jats:p>

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