中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Constraints on the Evolution of the Galaxy Stellar Mass Function. I. Role of Star Formation, Mergers, and Stellar Stripping

文献类型:期刊论文

作者Contini, E.; Kang, Xi; Romeo, A. D.; Xia, Q.
刊名ASTROPHYSICAL JOURNAL
出版日期2017-03-01
卷号837期号:1页码:13
关键词galaxies: clusters: general galaxies: evolution Galaxy: formation
ISSN号0004-637X
DOI10.3847/1538-4357/aa5d16
英文摘要

We study the connection between the observed star formation rate-stellar mass (SFR-M-*) relation and the evolution of the stellar mass function (SMF) by means of a subhalo abundance matching technique coupled to merger trees extracted from an N-body simulation. Our approach, which considers both galaxy mergers and stellar stripping, is to force the model to match the observed SMF at redshift z > 2, and let it evolve down to the present time according to the observed SFR-M-* relation. In this study, we use two different sets of SMFs and two SFR-M-* relations: a simple power law and a relation with a mass-dependent slope. Our analysis shows that the evolution of the SMF is more consistent with an SFR-M-* relation with a mass-dependent slope, in agreement with predictions from other models of galaxy evolution and recent observations. In order to fully and realistically describe the evolution of the SMF, both mergers and stellar stripping must be considered, and we find that both have almost equal effects on the evolution of SMF at the massive end. Taking into account the systematic uncertainties in the observed data, the high-mass end of the SMF obtained by considering stellar stripping results in good agreement with recent observational data from the Sloan Digital Sky Survey. At log M-* < 11.2, our prediction at z = 0.1 is close to Li & White data, but the high-mass end (log M-* > 11.2) is in better agreement with D'Souza et al. data which account for more massive galaxies.

WOS关键词EXTRAGALACTIC LEGACY SURVEY ; LOW-REDSHIFT UNIVERSE ; DARK-MATTER HALOS ; LESS-THAN 4 ; COSMOLOGICAL SIMULATIONS ; COMPREHENSIVE ANALYSIS ; FORMATION HISTORIES ; LUMINOSITY FUNCTION ; PHYSICAL-PROPERTIES ; QUIESCENT GALAXIES
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000401170800012
出版者IOP PUBLISHING LTD
源URL[http://libir.pmo.ac.cn/handle/332002/23081]  
专题中国科学院紫金山天文台
通讯作者Contini, E.
作者单位Purple Mt Observ, Partner Grp MPI Astron, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
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Contini, E.,Kang, Xi,Romeo, A. D.,et al. Constraints on the Evolution of the Galaxy Stellar Mass Function. I. Role of Star Formation, Mergers, and Stellar Stripping[J]. ASTROPHYSICAL JOURNAL,2017,837(1):13.
APA Contini, E.,Kang, Xi,Romeo, A. D.,&Xia, Q..(2017).Constraints on the Evolution of the Galaxy Stellar Mass Function. I. Role of Star Formation, Mergers, and Stellar Stripping.ASTROPHYSICAL JOURNAL,837(1),13.
MLA Contini, E.,et al."Constraints on the Evolution of the Galaxy Stellar Mass Function. I. Role of Star Formation, Mergers, and Stellar Stripping".ASTROPHYSICAL JOURNAL 837.1(2017):13.

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来源:紫金山天文台

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