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Gas depletion in cluster galaxies depends strongly on their internal structure
Zhang, Wei1; Li, Cheng2,3; Kauffmann, Guinevere4; Xiao, Ting2,3
2013-03-01
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷号429期号:3页码:2191-2198
摘要We analyse galaxies in 300 nearby groups and clusters identified in the Sloan Digital Sky Survey using a photometric gas mass indicator that is useful for estimating the degree to which the interstellar medium of a cluster galaxy has been depleted. We study the radial dependence of inferred gas mass fractions for galaxies of different stellar masses and stellar surface densities. At fixed cluster-centric distance and at fixed stellar mass, lower density galaxies are more strongly depleted of their gas than higher density galaxies. An analysis of depletion trends in the two-dimensional plane of stellar mass M-* and stellar mass surface density mu(*) reveals that gas depletion at fixed cluster-centric radius is much more sensitive to the density of a galaxy than to its mass. We suggest that low-density galaxies are more easily depleted of their gas, because they are more easily affected by ram-pressure and/or tidal forces. We also look at the dependence of our gas fraction/radius relations on the velocity dispersion of the cluster, finding no clear systematic trend.
关键词Galaxies: Clusters: General Galaxies: Distances And Redshifts
DOI10.1093/mnras/sts490
收录类别SCI
语种英语
WOS记录号WOS:000318271300024
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文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8899
专题光学天文研究部
作者单位1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
2.Chinese Acad Sci, Shanghai Astron Observ, Max Planck Inst Astrophys, Partner Grp, Shanghai 200030, Peoples R China
3.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China
4.Max Planck Inst Astrophys, D-85748 Garching, Germany
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Zhang, Wei,Li, Cheng,Kauffmann, Guinevere,et al. Gas depletion in cluster galaxies depends strongly on their internal structure[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2013,429(3):2191-2198.
APA Zhang, Wei,Li, Cheng,Kauffmann, Guinevere,&Xiao, Ting.(2013).Gas depletion in cluster galaxies depends strongly on their internal structure.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,429(3),2191-2198.
MLA Zhang, Wei,et al."Gas depletion in cluster galaxies depends strongly on their internal structure".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 429.3(2013):2191-2198.
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