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z -GAL: A NOEMA spe...
z -GAL: A NOEMA spectroscopic redshift survey of bright Herschel galaxies: III. Physical properties
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- Berta, S. (author)
- Institut de Radioastronomie Millimétrique (IRAM)
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- Stanley, F. (author)
- Institut de Radioastronomie Millimétrique (IRAM)
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- Ismail, D. (author)
- Laboratoire d'Astrophysique de Marseille
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- Cox, P. (author)
- Institut d 'Astrophysique de Paris
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- Neri, R. (author)
- Institut de Radioastronomie Millimétrique (IRAM)
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- Yang, Chentao, 1988 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Young, A. J. (author)
- Rutgers University
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- Jin, S. (author)
- Danmarks Tekniske Universitet,Technical University of Denmark
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- Dannerbauer, H. (author)
- Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
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- Bakx, Tom, 1990 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,National Astronomical Observatory of Japan,Nagoya University
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- Beelen, A. (author)
- Laboratoire d'Astrophysique de Marseille
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- Weiß, A. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Nanni, A. (author)
- Istituto nazionale di astrofisica (INAF)
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- Omont, A.A. (author)
- Institut d 'Astrophysique de Paris
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- van der Werf, P. (author)
- Universiteit Leiden (UL),Leiden University (UL)
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- Krips, M. (author)
- Institut de Radioastronomie Millimétrique (IRAM)
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- Baker, A. J. (author)
- Rutgers University,University of the Western Cape
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- Bendo, G. J. (author)
- University of Manchester
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- Borsato, E. (author)
- Università Degli Studi di Padova,University of Padua
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- Buat, V. (author)
- Laboratoire d'Astrophysique de Marseille
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- Butler, K. M. (author)
- Institut de Radioastronomie Millimétrique (IRAM)
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- Chartab, N. (author)
- University of California at Irvine (UCI)
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- Cooray, A. (author)
- University of California at Irvine (UCI)
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- Dye, S. (author)
- University Of Nottingham
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- Eales, S. (author)
- Cardiff University
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- Gavazzi, R. (author)
- Institut d 'Astrophysique de Paris
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- Hughes, D. (author)
- Instituto Nacional de Astrofísica, Óptica y Electrońica (INAOE),National Institute of Astrophysics, Optics and Electronics (INAOE)
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- Ivison, R. J. (author)
- Dublin Institute for Advanced Studies,University of Edinburgh,Macquarie University,European Southern Observatory (ESO)
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- Jones, B. M. (author)
- Universität zu Köln,University of Cologne
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- Lehnert, M. (author)
- CRAL Le Centre de Recherche Astronomique de Lyon
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- Marchetti, L. (author)
- Istituto di Radioastronomia,University of Cape Town
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- Messias, H. (author)
- Atacama Large Millimeter-submillimeter Array (ALMA),European Southern Observatory Santiago
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- Negrello, M. (author)
- Cardiff University
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- Perez-Fournon, I. (author)
- Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
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- Riechers, D. A. (author)
- Universität zu Köln,University of Cologne
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- Serjeant, S. (author)
- Open University
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- Urquhart, S. (author)
- Open University
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- Vlahakis, C. (author)
- National Radio Astronomy Observatory
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(creator_code:org_t)
- 2023
- 2023
- English.
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In: Astronomy and Astrophysics. - 0004-6361 .- 1432-0746. ; 678
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https://doi.org/10.1...
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Abstract
Subject headings
Close
- The z-GAL survey observed 137 bright Herschel-selected targets with the IRAM Northern Extended Millimeter Array, with the aim to measure their redshift and study their properties. Several of them have been resolved into multiple sources. Consequently, robust spectroscopic redshifts have been measured for 165 individual galaxies in the range 0.8., <., z., <., 6.5. In this paper we analyse the millimetre spectra of the z-GAL sources, using both their continuum and line emission to derive their physical properties. At least two spectral lines are detected for each source, including transitions of 12CO, [CI], and H2O. The observed 12CO line ratios and spectral line energy distributions of individual sources resemble those of local starbursts. In seven sources the para-H2O (211-202) transition is detected and follows the IR versus H2O luminosity relation of sub-millimetre galaxies. The molecular gas mass of the z-GAL sources is derived from their 12CO, [CI], and sub-millimetre dust continuum emission. The three tracers lead to consistent results, with the dust continuum showing the largest scatter when compared to 12CO. The gas-to-dust mass ratio of these sources was computed by combining the information derived from 12CO and the dust continuum and has a median value of 107, similar to star-forming galaxies of near-solar metallicity. The same combined analysis leads to depletion timescales in the range between 0.1 and 1.0 Gyr, which place the z-GAL sources between the main sequence' of star formation and the locus of starbursts. Finally, we derived a first estimate of stellar masses "modulo possible gravitational magnification "by inverting known gas scaling relations: the z-GAL sample is confirmed to be mostly composed by starbursts, whereas ∼25% of its members lie on the main sequence of star-forming galaxies (within ±0.5 dex).
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- Galaxies: high-redshift
- Galaxies: ISM
- Submillimeter: galaxies
- Galaxies: star formation
- Galaxies: statistics
- Galaxies: starburst
Publication and Content Type
- art (subject category)
- ref (subject category)
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To the university's database
- By the author/editor
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Berta, S.
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Stanley, F.
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Ismail, D.
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Cox, P.
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Neri, R.
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Yang, Chentao, 1 ...
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show more...
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Young, A. J.
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Jin, S.
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Dannerbauer, H.
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Bakx, Tom, 1990
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Beelen, A.
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Weiß, A.
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Nanni, A.
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Omont, A.A.
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van der Werf, P.
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Krips, M.
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Baker, A. J.
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Bendo, G. J.
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Borsato, E.
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Buat, V.
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Butler, K. M.
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Chartab, N.
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Cooray, A.
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Dye, S.
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Eales, S.
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Gavazzi, R.
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Hughes, D.
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Ivison, R. J.
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Jones, B. M.
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Lehnert, M.
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Marchetti, L.
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Messias, H.
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Negrello, M.
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Perez-Fournon, I ...
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Riechers, D. A.
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Serjeant, S.
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Urquhart, S.
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Vlahakis, C.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
- Articles in the publication
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Astronomy and As ...
- By the university
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Chalmers University of Technology