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Physical Characteri...
Physical Characterization of an Unlensed, Dusty Star-forming Galaxy at z = 5.85
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- Casey, Caitlin M. (author)
- The University of Texas at Austin, USA
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- Zavala, J. A. (author)
- The University of Texas at Austin, USA
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- Aravena, Manuel (author)
- Universidad Diego Portales,Diego Portales University
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- Béthermin, Matthieu (author)
- Laboratoire d'Astrophysique de Marseille
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- Caputi, Karina I. (author)
- Köpenhamns universitet,University of Copenhagen,Rijksuniversiteit Groningen,University of Groningen
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- Champagne, Jaclyn B. (author)
- The University of Texas at Austin, USA
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- Clements, D. L. (author)
- Imperial College of Science, Technology and Medicine
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- Cunha, E. Da (author)
- University of Western Australia,ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D),Australian National University
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- Drew, Patrick (author)
- The University of Texas at Austin, USA
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- Finkelstein, Steven L. (author)
- The University of Texas at Austin, USA
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- Hayward, Christopher C. (author)
- Flatiron Institute
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- Kartaltepe, Jeyhan S. (author)
- Rochester Institute of Technology
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- Knudsen, Kirsten Kraiberg, 1976 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Koekemoer, Anton M. (author)
- Space Telescope Science Institute (STScI)
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- Magdis, Georgios E. (author)
- Köpenhamns universitet,University of Copenhagen,Niels Bohr Institute
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- Man, Allison (author)
- University of Toronto
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- Manning, Sinclaire M. (author)
- The University of Texas at Austin, USA
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- Scoville, N. Z. (author)
- California Institute of Technology (Caltech)
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- Sheth, K. (author)
- National Aeronautics and Space Administration (NASA)
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- Spilker, Justin (author)
- The University of Texas at Austin, USA
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- Staguhn, Johannes (author)
- NASA Goddard Space Flight Center,Johns Hopkins University
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- Talia, Margherita (author)
- Universita di Bologna,University of Bologna
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- Taniguchi, Yoshiaki (author)
- The Open University of Japan
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- Toft, Sune (author)
- Köpenhamns universitet,University of Copenhagen,Niels Bohr Institute
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- Treister, E. (author)
- Pontificia Universidad Catolica de Chile
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- Yun, Min (author)
- University of Massachusetts
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(creator_code:org_t)
- 2019-12-11
- 2019
- English.
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In: Astrophysical Journal. - : American Astronomical Society. - 1538-4357 .- 0004-637X. ; 887:1
- Related links:
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https://cris.unibo.i...
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https://research.cha...
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https://doi.org/10.3...
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Abstract
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- We present a physical characterization of MM J100026.36+021527.9 (a.k.a. "Mambo-9"), a dusty star-forming galaxy (DSFG) at z = 5.850 ± 0.001. This is the highest-redshift unlensed DSFG (and fourth most distant overall) found to date and is the first source identified in a new 2 mm blank-field map in the COSMOS field. Though identified in prior samples of DSFGs at 850 μm to 1.2 mm with unknown redshift, the detection at 2 mm prompted further follow-up as it indicated a much higher probability that the source was likely to sit at z > 4. Deep observations from the Atacama Large Millimeter and submillimeter Array (ALMA) presented here confirm the redshift through the secure detection of 12CO(J = 6→5) and p-H2O (21,1 → 20,2). Mambo-9 is composed of a pair of galaxies separated by 6 kpc with corresponding star formation rates of 590 M o˙ yr-1 and 220 M o˙ yr-1, total molecular hydrogen gas mass of (1.7 ± 0.4) × 1011 M o˙, dust mass of (1.3 ± 0.3) × 109 M o˙, and stellar mass of (3.2-1.5+1.0) × 109 M o˙. The total halo mass, (3.3 ± 0.8) × 1012 M o˙, is predicted to exceed 1015 M o˙ by z = 0. The system is undergoing a merger-driven starburst that will increase the stellar mass of the system tenfold in τ depl = 40-80 Myr, converting its large molecular gas reservoir (gas fraction of 96-2+1) into stars. Mambo-9 evaded firm spectroscopic identification for a decade, following a pattern that has emerged for some of the highest-redshift DSFGs found. And yet, the systematic identification of unlensed DSFGs like Mambo-9 is key to measuring the global contribution of obscured star formation to the star formation rate density at z ⪆ 4, the formation of the first massive galaxies, and the formation of interstellar dust at early times (≲1 Gyr).
Subject headings
- NATURVETENSKAP -- Kemi -- Analytisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Analytical Chemistry (hsv//eng)
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Kemiska processer (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Chemical Process Engineering (hsv//eng)
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- ref (subject category)
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- By the author/editor
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Casey, Caitlin M ...
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Zavala, J. A.
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Aravena, Manuel
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Béthermin, Matth ...
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Caputi, Karina I ...
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Champagne, Jacly ...
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Clements, D. L.
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Cunha, E. Da
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Drew, Patrick
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Finkelstein, Ste ...
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Hayward, Christo ...
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Kartaltepe, Jeyh ...
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Knudsen, Kirsten ...
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Koekemoer, Anton ...
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Magdis, Georgios ...
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Man, Allison
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Manning, Sinclai ...
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Scoville, N. Z.
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Sheth, K.
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Spilker, Justin
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Staguhn, Johanne ...
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Talia, Margherit ...
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Taniguchi, Yoshi ...
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Toft, Sune
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Treister, E.
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Yun, Min
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Analytical Chemi ...
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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ENGINEERING AND ...
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Chalmers University of Technology