Gas Contents of Galaxy Groups from Thermal Sunyaev-Zel'dovich Effects

doi:10.3847/1538-4357/aaaa21

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	Gas Contents of Galaxy Groups from Thermal Sunyaev-Zel'dovich Effects
	Lim, S. H.2; Mo, H. J.2,3,4; Li, Ran 5; Liu, Yue 2; Ma, Yin-Zhe 6,7; Wang, Huiyuan 1,8; Yang, Xiaohu 9,10,11
刊名	ASTROPHYSICAL JOURNAL
	2018-02-20
卷号	854 期号:2 页码:7
关键词	galaxies: evolution galaxies: formation galaxies: halos methods: statistical
ISSN号	0004-637X
DOI	10.3847/1538-4357/aaaa21
英文摘要	A matched filter technique is applied to the Planck all-sky Compton y-parameter map to measure the thermal Sunyaev-Zel'dovich (tSZ) effect produced by galaxy groups of different halo masses selected from large redshift surveys in the low-z universe. Reliable halo mass estimates are available for all of the groups, which allows us to bin groups of similar halo masses to investigate how the tSZ effect depends on halo mass over a large mass range. Filters are simultaneously matched for all groups to minimize projection effects. We find that the integrated y-parameter and the hot gas content it implies are consistent with the predictions of the universal pressure profile model only for massive groups above 10(14) M-circle dot, but much lower than the model prediction for low-mass groups. The halo mass dependence found is in good agreement with the predictions of a set of simulations that include strong active galactic nucleus feedback, but simulations including only supernova feedback significantly overpredict the hot gas contents in galaxy groups. Our results suggest that hot gas in galaxy groups is either effectively ejected or in phases much below the virial temperatures of the host halos.
资助项目	NSF[AST-1517528] ; China 973 Program[2015CB857002] ; national science foundation of China[11233005] ; national science foundation of China[11621303] ; national science foundation of China[11522324] ; national science foundation of China[11421303] ; national science foundation of China[11503065] ; national science foundation of China[11673015] ; South Africa National Research Foundation[105925]
WOS关键词	STAR-FORMATION HISTORY ; SZ CLUSTER SURVEYS ; HOT GAS ; STELLAR FEEDBACK ; DARK-MATTER ; XMM-NEWTON ; HALOES ; STATISTICS ; REXCESS ; CATALOG
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000426158500011
资助机构	NSF ; NSF ; China 973 Program ; China 973 Program ; national science foundation of China ; national science foundation of China ; South Africa National Research Foundation ; South Africa National Research Foundation ; NSF ; NSF ; China 973 Program ; China 973 Program ; national science foundation of China ; national science foundation of China ; South Africa National Research Foundation ; South Africa National Research Foundation ; NSF ; NSF ; China 973 Program ; China 973 Program ; national science foundation of China ; national science foundation of China ; South Africa National Research Foundation ; South Africa National Research Foundation ; NSF ; NSF ; China 973 Program ; China 973 Program ; national science foundation of China ; national science foundation of China ; South Africa National Research Foundation ; South Africa National Research Foundation
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/37235]
专题	中国科学院国家天文台
通讯作者	Lim, S. H.
作者单位	1.Univ Sci & Technol China, Dept Astron, Key Lab Res Galaxies & Cosmol, Hefei 230026, Anhui, Peoples R China 2.Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA 3.Tsinghua Univ, Dept Astron, Beijing 10084, Peoples R China 4.Tsinghua Univ, Ctr Astrophys, Beijing 10084, Peoples R China 5.Chinese Acad Sci, Natl Astron Observ, Key Lab Computat Astrophys, Beijing 100012, Peoples R China 6.Univ KwaZulu Natal, Sch Chem & Phys, Westville Campus,Private Bag X54001, ZA-4000 Durban, South Africa 7.Univ KwaZulu Natal, NAOC UKZN Computat Astrophys Ctr NUCAC, ZA-4000 Durban, South Africa 8.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Anhui, Peoples R China 9.Shanghai Jiao Tong Univ, Dept Astron, Shanghai 200240, Peoples R China 10.Shanghai Jiao Tong Univ, Tsung Dao Lee Inst, Shanghai 200240, Peoples R China
推荐引用方式 GB/T 7714	Lim, S. H.,Mo, H. J.,Li, Ran,et al. Gas Contents of Galaxy Groups from Thermal Sunyaev-Zel'dovich Effects[J]. ASTROPHYSICAL JOURNAL,2018,854(2):7.
APA	Lim, S. H..,Mo, H. J..,Li, Ran.,Liu, Yue.,Ma, Yin-Zhe.,...&Yang, Xiaohu.(2018).Gas Contents of Galaxy Groups from Thermal Sunyaev-Zel'dovich Effects.ASTROPHYSICAL JOURNAL,854(2),7.
MLA	Lim, S. H.,et al."Gas Contents of Galaxy Groups from Thermal Sunyaev-Zel'dovich Effects".ASTROPHYSICAL JOURNAL 854.2(2018):7.