| Title | S2COSMOS: Evolution of gas mass with redshift using dust emission |
| Authors | Millard, Jenifer S. Eales, Stephen A. Smith, M. W. L. Gomez, H. L. Malek, K. Simpson, J. M. Peng, Y. Sawicki, M. Beeston, R. A. Bunker, Andrew Ao, Y. Babul, A. Ho, L. C. Hwang, Ho Seong Michalowski, M. J. Scoville, N. Shim, H. Toba, Y. |
| Affiliation | Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3AA, Wales Aix Marseille Univ, CNRS, CNES, LAM, F-13007 Marseille, France Natl Ctr Nucl Res, Ul Hoza 69, PL-00681 Warsaw, Poland Acad Sinica, Inst Astron & Astrophys, 1,Sect 4,Roosevelt Rd, Taipei 10617, Taiwan Peking Univ, Kavli Inst Astron & Astrophys, 5 Yiheyuan Rd, Beijing 100871, Peoples R China St Marys Univ, Inst Computat Astrophys, Halifax, NS B3H 3C3, Canada St Marys Univ, Dept Astron & Phys, Halifax, NS B3H 3C3, Canada Univ Oxford, Sub Dept Astrophys, Dept Phys, Denys Wilkinson Bldg,Keble Rd, Oxford OX1 3RH, England Chinese Acad Sci, Purple Mt Observ, 8 Yuanhua Rd, Nanjing 210034, Peoples R China Chinese Acad Sci, Key Lab Radio Astron, 8 Yuanhua Rd, Nanjing 210034, Peoples R China Univ Victoria, Dept Phys & Astron, 3800 Finnerty Rd, Victoria, BC V8P 1A1, Canada Peking Univ, Sch Phys, Dept Astron, 5 Yiheyuan Rd, Beijing 100871, Peoples R China Korea Astron & Space Sci Inst, 776 Daedeokdae Ro, Daejeon 34055, South Korea Adam Mickiewicz Univ, Fac Phys, Astron Observ Inst, Ul Sloneczna 36, PL-60286 Poznan, Poland CALTECH, MC 249-17,1200 East Calif Blvd, Pasadena, CA 91125 USA Kyungpook Natl Univ, Dept Earth Sci Educ, 80 Daehak Ro, Daegu 41566, South Korea Kyoto Univ, Dept Astron, Sakyo Ku, Kitashirakawa Oiwake Cho, Kyoto 6068502, Japan Ehime Univ, Res Ctr Space & Cosm Evolut, 2-5 Bunkyo Cho, Matsuyama, Ehime 7908577, Japan |
| Keywords | COSMOLOGY LEGACY SURVEY STAR-FORMING GALAXIES MOLECULAR GAS COSMIC EVOLUTION HERSCHEL-ATLAS STELLAR MASS PANCHROMATIC PHOTOMETRY INFRARED-EMISSION SIMPLE-MODEL COLD DUST |
| Issue Date | May-2020 |
| Publisher | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY |
| Abstract | We investigate the evolution of the gas mass fraction for galaxies in the COSMOS field using submillimetre emission from dust at 850 mu m. We use stacking methodologies on the 850 mu m S2COSMOS map to derive the gas mass fraction of galaxies out to high redshifts, 0 <= z <= 5, for galaxies with stellar masses of 10(9.5) < M-*(M-circle dot) < 10(11.75). In comparison to previous literature studies we extend to higher redshifts, include more normal star-forming galaxies (on the main sequence), and also investigate the evolution of the gas mass fraction split by star-forming and passive galaxy populations. We find our stacking results broadly agree with scaling relations in the literature. We find tentative evidence for a peak in the gas mass fraction of galaxies at around z similar to 2.5-3, just before the peak of the star formation history of the Universe. We find that passive galaxies are particularly devoid of gas, compared to the star-forming population. We find that even at high redshifts, high stellar mass galaxies still contain significant amounts of gas. |
| URI | http://hdl.handle.net/20.500.11897/589301 |
| ISSN | 0035-8711 |
| DOI | 10.1093/mnras/staa609 |
| Indexed | SCI(E) |
| Appears in Collections: | 科维理天文与天体物理研究所 物理学院 |
