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  • Manning, Sinclaire M.The University of Texas at Austin, USA,University of Massachusetts (author)

Characterization of Two 2 mm detected Optically Obscured Dusty Star-forming Galaxies

  • Article/chapterEnglish2022

Publisher, publication year, extent ...

  • 2022-01-21
  • American Astronomical Society,2022
  • electronicrdacarrier

Numbers

  • LIBRIS-ID:oai:research.chalmers.se:48de751c-019c-4424-8f0a-84deae53e831
  • https://research.chalmers.se/publication/528618URI
  • https://doi.org/10.3847/1538-4357/ac366aDOI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • The 2 mm Mapping Obscuration to Reionization with ALMA (MORA) Survey was designed to detect high-redshift (z greater than or similar to 4), massive, dusty star-forming galaxies (DSFGs). Here we present two likely high-redshift sources, identified in the survey, whose physical characteristics are consistent with a class of optical/near-infrared (OIR)-invisible DSFGs found elsewhere in the literature. We first perform a rigorous analysis of all available photometric data to fit spectral energy distributions and estimate redshifts before deriving physical properties based on our findings. Our results suggest the two galaxies, called MORA-5 and MORA-9, represent two extremes of the "OIR-dark" class of DSFGs. MORA-5 (z(phot) = 4.3(-1.3)(+1.5)) is a significantly more active starburst with a star formation rate (SFR) of 830(-190)(+340) M-circle dot yr(-1) compared to MORA-9 (z(phot) = 4.3(-1.0)(+1.3)), whose SFR is a modest 200(-60)(+250) M-circle dot yr(-1). Based on the stellar masses (M-star approximate to 10(10-11) M-circle dot), space density (n similar to (5 +/- 2) x 10(-6) Mpc(-3), which incorporates two other spectroscopically confirmed OIR-dark DSFGs in the MORA sample at z = 4.6 and z = 5.9), and gas depletion timescales (<1 Gyr) of these sources, we find evidence supporting the theory that OIR-dark DSFGs are the progenitors of recently discovered 3 < z < 4 massive quiescent galaxies.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Casey, Caitlin M.The University of Texas at Austin, USA (author)
  • Zavala, Jorge A.The University of Texas at Austin, USA,National Astronomical Observatory of Japan (author)
  • Magdis, Georgios E.Köpenhamns universitet,University of Copenhagen,Danmarks Tekniske Universitet,Technical University of Denmark (author)
  • Drew, Patrick M.The University of Texas at Austin, USA (author)
  • Champagne, Jaclyn B.The University of Texas at Austin, USA (author)
  • Aravena, ManuelUniversidad Diego Portales,Diego Portales University (author)
  • Bethermin, MatthieuAix-Marseille Université,Aix Marseille University (author)
  • Clements, David L.Imperial College of Science, Technology and Medicine (author)
  • Finkelstein, Steven L.The University of Texas at Austin, USA (author)
  • Fujimoto, SeijiKöpenhamns universitet,University of Copenhagen (author)
  • Hayward, Christopher C.Flatiron Institute (author)
  • Hodge, Jacqueline A.Universiteit Leiden (UL),Leiden University (UL) (author)
  • Ilbert, OlivierAix-Marseille Université,Aix Marseille University (author)
  • Kartaltepe, Jeyhan S.Rochester Institute of Technology (author)
  • Knudsen, Kirsten Kraiberg,1976Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)kraiberg (author)
  • Koekemoer, Anton M.Space Telescope Science Institute (STScI) (author)
  • Man, Allison W. S.University of British Columbia (UBC) (author)
  • Sanders, David B.University of Hawaii (author)
  • Sheth, KartikNational Aeronautics and Space Administration (NASA) (author)
  • Spilker, Justin S.The University of Texas at Austin, USA (author)
  • Staguhn, JohannesJohns Hopkins University,NASA Goddard Space Flight Center (author)
  • Talia, MargheritaUniversita di Bologna,University of Bologna,Istituto nazionale di astrofisica (INAF) (author)
  • Treister, EzequielPontificia Universidad Catolica de Chile (author)
  • Yun, Min S.University of Massachusetts (author)
  • The University of Texas at Austin, USAUniversity of Massachusetts (creator_code:org_t)

Related titles

  • In:Astrophysical Journal: American Astronomical Society925:11538-43570004-637X

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