The Roles of Mass and Environment in the Quenching of Galaxies

doi:10.3847/1538-4357/ab3b03

	The Roles of Mass and Environment in the Quenching of Galaxies
	Contini, E.1; Gu, Q.1; Kang, X.2 ; Rhee, J.3,4; Yi, S. K.3,4
刊名	ASTROPHYSICAL JOURNAL
	2019-09-10
卷号	882 期号:2 页码:11
关键词	galaxies: evolution galaxies: general
ISSN号	0004-637X
DOI	10.3847/1538-4357/ab3b03
通讯作者	Contini, E.(emanuele.contini82@gmail.com)
英文摘要	We study the roles of stellar mass and environment in quenching the star formation activity of a large set of simulated galaxies by taking advantage of an analytic model coupled to the merger tree extracted from an N-body simulation. The analytic model has been set to match the evolution of the global stellar mass function since redshift z similar to 2.3 and give reasonable predictions of the star formation history of galaxies at the same time. We find that stellar mass and environment play different roles: the star formation rate/specific star formation rate-M-* relations are independent of the environment (defined as the halo mass) at any redshift probed, 0 < z < 1.5, for both star-forming and quiescent galaxies, while the star formation rate -M-halo relation strongly depends on stellar mass in the same redshift range, for both star-forming and quiescent galaxies. Moreover, the star formation rate and the specific star formation rate are strongly dependent on stellar mass even when the distance from the cluster core is used as a proxy for the environment, rather than the halo mass. We then conclude that stellar mass is the main driver of galaxy quenching at any redshift probed in this study, not just at z > 1 as generally claimed, while the environment has a minimal role. All the physical processes linked to the environment must act on very short timescales, such that they do not influence the star formation of active galaxies, but increase the probability of a given galaxy to become quiescent.
WOS关键词	STAR-FORMATION RATES ; ACTIVE GALACTIC NUCLEI ; STELLAR MASS ; CLUSTER GALAXIES ; FORMATION HISTORIES ; PHYSICAL-PROPERTIES ; RED SEQUENCE ; DARK-MATTER ; HALO MASS ; EVOLUTION
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000486366600001
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/32209]
专题	中国科学院紫金山天文台
通讯作者	Contini, E.
作者单位	1.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China 2.Partner Grp MPI Astron, Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China 3.Yonsei Univ, Dept Astron, Yonsei Ro 50, Seoul 03722, South Korea 4.Yonsei Univ, Yonsei Univ Observ, Yonsei Ro 50, Seoul 03722, South Korea
推荐引用方式 GB/T 7714	Contini, E.,Gu, Q.,Kang, X.,et al. The Roles of Mass and Environment in the Quenching of Galaxies[J]. ASTROPHYSICAL JOURNAL,2019,882(2):11.
APA	Contini, E.,Gu, Q.,Kang, X.,Rhee, J.,&Yi, S. K..(2019).The Roles of Mass and Environment in the Quenching of Galaxies.ASTROPHYSICAL JOURNAL,882(2),11.
MLA	Contini, E.,et al."The Roles of Mass and Environment in the Quenching of Galaxies".ASTROPHYSICAL JOURNAL 882.2(2019):11.