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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
2019-09-10
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume882Issue:2Pages:11
Corresponding AuthorContini, E.(emanuele.contini82@gmail.com)
AbstractWe 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.
Keywordgalaxies: evolution galaxies: general
DOI10.3847/1538-4357/ab3b03
WOS KeywordSTAR-FORMATION RATES ; ACTIVE GALACTIC NUCLEI ; STELLAR MASS ; CLUSTER GALAXIES ; FORMATION HISTORIES ; PHYSICAL-PROPERTIES ; RED SEQUENCE ; DARK-MATTER ; HALO MASS ; EVOLUTION
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000486366600001
PublisherIOP PUBLISHING LTD
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Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/32210
Collection中国科学院紫金山天文台
Corresponding AuthorContini, E.
Affiliation1.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
Recommended Citation
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.
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