Nearly all Massive Quiescent Disk Galaxies Have a Surprisingly Large Atomic Gas Reservoir

doi:10.3847/2041-8213/ab4ae4

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	Nearly all Massive Quiescent Disk Galaxies Have a Surprisingly Large Atomic Gas Reservoir
	Zhang,Chengpeng 1,2; Peng,Yingjie 1; Ho,Luis C.1,2; Maiolino,Roberto 3,4; Dekel,Avishai 5,6; Guo,Qi 7,8; Mannucci,Filippo 9; Li,Di 8,10; Yuan,Feng 11; Renzini,Alvio 12
刊名	The Astrophysical Journal Letters
	2019-10-18
卷号	884 期号:2
关键词	Galaxy evolution Interstellar medium Galaxy quenching Interstellar atomic gas
ISSN号	2041-8205
DOI	10.3847/2041-8213/ab4ae4
英文摘要	Abstract The massive galaxy population above the characteristic Schechter mass M*?≈?1010.6 contributes to about half of the total stellar mass in the local universe. These massive galaxies usually reside in hot dark matter halos above the critical shock-heating mass ～1012 , where the external cold gas supply to these galaxies is expected to be suppressed. When galaxies run out of their cold gas reservoir, they become dead and quiescent. Therefore, massive quiescent galaxies living in hot halos are commonly believed to be gas-poor. Based on the data from SDSS, ALFALFA, GASS, and COLD GASS surveys, here we show that the vast majority of the massive, quiescent, central disk galaxies in the nearby universe have a remarkably large amount of cold atomic hydrogen gas, surprisingly similar to star-forming galaxies. Both star-forming and quiescent disk galaxies show identical symmetric double-horn H i?spectra, indicating similar regularly rotating H i?disks. Relative to their star-forming counterparts, massive quiescent central disk galaxies are quenched because of their significantly reduced molecular gas content, lower dust content, and lower star formation efficiency. Our findings reveal a new picture, which clearly demonstrates the detailed star formation quenching process in massive galaxies and provides a stringent constraint on the physical mechanism of quenching.
语种	英语
出版者	The American Astronomical Society
WOS记录号	IOP:2041-8205-884-2-AB4AE4
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/28478]
专题	中国科学院国家天文台
作者单位	1.Kavli Institute for Astronomy and Astrophysics, Peking University, 5 Yiheyuan Road, Beijing 100871, People's Republic of China; yjpeng@pku.edu.cn 2.Department of Astronomy, School of Physics, Peking University, 5 Yiheyuan Road, Beijing 100871, People's Republic of China 3.Cavendish Laboratory, University of Cambridge, 19 J.J. Thomson Avenue, Cambridge CB3 0HE, UK 4.Kavli Institute for Cosmology, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK 5.Racah Institute of Physics, The Hebrew University, Jerusalem 91904, Israel 6.SCIPP, University of California, Santa Cruz, CA 95064, USA 7.Key Laboratory for Computational Astrophysics, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People's Republic of China 8.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China 9.Istituto Nazionale di Astrofisica, Osservatorio Astrofisico di Arcetri, Largo Enrico Fermi 5, I-50125 Firenze, Italy 10.CAS Key Laboratory of FAST, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People's Republic of China
推荐引用方式 GB/T 7714	Zhang,Chengpeng,Peng,Yingjie,Ho,Luis C.,et al. Nearly all Massive Quiescent Disk Galaxies Have a Surprisingly Large Atomic Gas Reservoir[J]. The Astrophysical Journal Letters,2019,884(2).
APA	Zhang,Chengpeng.,Peng,Yingjie.,Ho,Luis C..,Maiolino,Roberto.,Dekel,Avishai.,...&Li,Qiong.(2019).Nearly all Massive Quiescent Disk Galaxies Have a Surprisingly Large Atomic Gas Reservoir.The Astrophysical Journal Letters,884(2).
MLA	Zhang,Chengpeng,et al."Nearly all Massive Quiescent Disk Galaxies Have a Surprisingly Large Atomic Gas Reservoir".The Astrophysical Journal Letters 884.2(2019).