PMO OpenIR
ELUCID. IV. Galaxy Quenching and its Relation to Halo Mass, Environment, and Assembly Bias
Wang, Huiyuan1,2; Mo, H. J.3,4,5; Chen, Sihan1; Yang, Yang1; Yang, Xiaohu6,7; van den Bosch, Frank C.8; Jing, Yipeng6,7; Kang, Xi9; Lin, Weipeng10; Lim, S. H.3; Huang, Shuiyao3; Lu, Yi11; Li, Shijie6,7; Cui, Weiguang12; Zhang, Youcai11; Tweed, Dylan6,7; Wei, Chengliang9; Li, Guoliang9; Shi, Feng11; Wang, Enci1,2
2018
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume852Issue:1Pages:20
Abstract

We examine the quenched fraction of central and satellite galaxies as a function of galaxy stellar mass, halo mass, and the matter density of their large-scale environment. Matter densities are inferred from our ELUCID simulation, a constrained simulation of the local universe sampled by SDSS, while halo masses and central/satellite classification are taken from the galaxy group catalog of Yang et al. The quenched fraction for the total population increases systematically with the three quantities. We find that the"environmental quenching efficiency," which quantifies the quenched fraction as a function of halo mass, is independent of stellar mass. And this independence is the origin of the stellar mass independence of density-based quenching efficiency found in previous studies. Considering centrals and satellites separately, we find that the two populations follow similar correlations of quenching efficiency with halo mass and stellar mass, suggesting that they have experienced similar quenching processes in their host halo. We demonstrate that satellite quenching alone cannot account for the environmental quenching efficiency of the total galaxy population, and that the difference between the two populations found previously arises mainly from the fact that centrals and satellites of the same stellar mass reside, on average, in halos of different mass. After removing these effects of halo mass and stellar mass, there remains a weak, but significant, residual dependence on environmental density, which is eliminated when halo assembly bias is taken into account. Our results therefore indicate that halo mass is the prime environmental parameter that regulates the quenching of both centrals and satellites.

Keyworddark matter large-scale structure of universe galaxies: evolution galaxies: groups: general galaxies: halos methods: statistical
DOI10.3847/1538-4357/aa9e01
WOS KeywordDIGITAL SKY SURVEY ; DARK-MATTER HALOES ; ACTIVE GALACTIC NUCLEI ; PAIRWISE VELOCITY DISPERSION ; STAR-FORMATION RATES ; STELLAR MASS ; SATELLITE GALAXIES ; OCCUPATION DISTRIBUTION ; OBSERVATIONAL EVIDENCE ; FORMATION HISTORY
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000419225900002
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/22152
Collection中国科学院紫金山天文台
Corresponding AuthorWang, Huiyuan
Affiliation1.Univ Sci & Technol China, Dept Astron, Key Lab Res Galaxies & Cosmol, Hefei 230026, Anhui, Peoples R China
2.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Anhui, Peoples R China
3.Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA
4.Tsinghua Univ, Astron Dept, Beijing 10084, Peoples R China
5.Tsinghua Univ, Ctr Astrophys, Beijing 10084, Peoples R China
6.Shanghai Jiao Tong Univ, Dept Astron, Shanghai 200240, Peoples R China
7.Shanghai Jiao Tong Univ, IFSA Collaborat Innovat Ctr, Shanghai 200240, Peoples R China
8.Yale Univ, Dept Astron, POB 208101, New Haven, CT 06520 USA
9.Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
10.Sun Yat Sen Univ, Sch Phys & Astron, Guangzhou 510275, Guangdong, Peoples R China
11.Shanghai Astron Observ, Nandan Rd 80, Shanghai 200030, Peoples R China
12.Univ Autonoma Madrid, Dept Fis Teor, Fac Ciencias, Modulo 15, E-28049 Madrid, Spain
Recommended Citation
GB/T 7714
Wang, Huiyuan,Mo, H. J.,Chen, Sihan,et al. ELUCID. IV. Galaxy Quenching and its Relation to Halo Mass, Environment, and Assembly Bias[J]. ASTROPHYSICAL JOURNAL,2018,852(1):20.
APA Wang, Huiyuan.,Mo, H. J..,Chen, Sihan.,Yang, Yang.,Yang, Xiaohu.,...&Wang, Enci.(2018).ELUCID. IV. Galaxy Quenching and its Relation to Halo Mass, Environment, and Assembly Bias.ASTROPHYSICAL JOURNAL,852(1),20.
MLA Wang, Huiyuan,et al."ELUCID. IV. Galaxy Quenching and its Relation to Halo Mass, Environment, and Assembly Bias".ASTROPHYSICAL JOURNAL 852.1(2018):20.
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