Evolution of Galaxy Types and HI Gas Contents in Galaxy Groups

doi:10.3847/1538-4357/aac9b7

CORC > 国家天文台 > 中国科学院国家天文台

	Evolution of Galaxy Types and HI Gas Contents in Galaxy Groups
	Mei, Ai 1,2; Ming, Zhu 1,2
刊名	ASTROPHYSICAL JOURNAL
	2018-07-20
卷号	862 期号:1 页码:14
关键词	galaxies: evolution galaxies: groups: general
ISSN号	0004-637X
DOI	10.3847/1538-4357/aac9b7
英文摘要	Using the group crossing time t(c) as an age indicator for galaxy groups, we have investigated the correlation between tc and the group spiral fraction, as well as between tc and the neutral hydrogen gas fraction of galaxy groups. Our galaxy group sample is selected from the SDSS DR7 catalog, and the group spiral fraction is derived from the Galaxy Zoo morphological data set. We found that the group spiral galaxy fraction is correlated with the group crossing time. We further cross-matched the latest released ALFALFA 70% H I source catalog with the SDSS group catalog and have identified 172 groups from the SDSS survey whose total H I mass can be derived by summing up the H I mass of all the H I sources within the group radius. For the galaxies not detected in ALFALFA, we estimate their H I masses based on the galaxies' optical colors and magnitudes. Our sample groups contain more than eight member galaxies, they cover a wide range of halo masses and are distributed in different cosmic environments. We derived the group H I mass fraction, which is the ratio of group H I mass to the group virial mass. We found a correlation between the H I mass fraction and the group crossing time. Our results suggest that long timescale mechanisms such as starvation seem to play a more important role than short timescale processes like stripping in depleting H I gas in the SDSS galaxy groups.
资助项目	National Key R&D Program of China[2017YFA0402600] ; NSFC[U1531246] ; Major Applied Basic Research Program of Guizhou Province[JZ[2014]200105] ; Open Project Program of the Key Laboratory of FAST, NAOC, Chinese Academy of Sciences ; Jim Gray research grant from Microsoft ; Leverhulme Trust ; National Science Foundation[AST-1100968] ; Alfred P. Sloan Foundation ; National Science Foundation ; US Department of Energy Office of Science
WOS关键词	FAST ALPHA SURVEY ; STAR-FORMATION ; CLUSTER GALAXIES ; NEUTRAL HYDROGEN ; ENVIRONMENTAL DEPENDENCE ; VIRGO CLUSTER ; HYDRODYNAMIC SIMULATIONS ; SCALING RELATIONS ; NEARBY GALAXIES ; REDSHIFT SURVEY
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000439334300015
资助机构	National Key R&D Program of China ; National Key R&D Program of China ; NSFC ; NSFC ; Major Applied Basic Research Program of Guizhou Province ; Major Applied Basic Research Program of Guizhou Province ; Open Project Program of the Key Laboratory of FAST, NAOC, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of FAST, NAOC, Chinese Academy of Sciences ; Jim Gray research grant from Microsoft ; Jim Gray research grant from Microsoft ; Leverhulme Trust ; Leverhulme Trust ; National Science Foundation ; National Science Foundation ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; US Department of Energy Office of Science ; US Department of Energy Office of Science ; National Key R&D Program of China ; National Key R&D Program of China ; NSFC ; NSFC ; Major Applied Basic Research Program of Guizhou Province ; Major Applied Basic Research Program of Guizhou Province ; Open Project Program of the Key Laboratory of FAST, NAOC, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of FAST, NAOC, Chinese Academy of Sciences ; Jim Gray research grant from Microsoft ; Jim Gray research grant from Microsoft ; Leverhulme Trust ; Leverhulme Trust ; National Science Foundation ; National Science Foundation ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; US Department of Energy Office of Science ; US Department of Energy Office of Science ; National Key R&D Program of China ; National Key R&D Program of China ; NSFC ; NSFC ; Major Applied Basic Research Program of Guizhou Province ; Major Applied Basic Research Program of Guizhou Province ; Open Project Program of the Key Laboratory of FAST, NAOC, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of FAST, NAOC, Chinese Academy of Sciences ; Jim Gray research grant from Microsoft ; Jim Gray research grant from Microsoft ; Leverhulme Trust ; Leverhulme Trust ; National Science Foundation ; National Science Foundation ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; US Department of Energy Office of Science ; US Department of Energy Office of Science ; National Key R&D Program of China ; National Key R&D Program of China ; NSFC ; NSFC ; Major Applied Basic Research Program of Guizhou Province ; Major Applied Basic Research Program of Guizhou Province ; Open Project Program of the Key Laboratory of FAST, NAOC, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of FAST, NAOC, Chinese Academy of Sciences ; Jim Gray research grant from Microsoft ; Jim Gray research grant from Microsoft ; Leverhulme Trust ; Leverhulme Trust ; National Science Foundation ; National Science Foundation ; Alfred P. Sloan Foundation ; Alfred P. Sloan Foundation ; National Science Foundation ; National Science Foundation ; US Department of Energy Office of Science ; US Department of Energy Office of Science
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/21020]
专题	中国科学院国家天文台
通讯作者	Ming, Zhu
作者单位	1.Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing, Peoples R China 2.Chinese Acad Sci, CAS Key Lab FAST, NAOC, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Mei, Ai,Ming, Zhu. Evolution of Galaxy Types and HI Gas Contents in Galaxy Groups[J]. ASTROPHYSICAL JOURNAL,2018,862(1):14.
APA	Mei, Ai,&Ming, Zhu.(2018).Evolution of Galaxy Types and HI Gas Contents in Galaxy Groups.ASTROPHYSICAL JOURNAL,862(1),14.
MLA	Mei, Ai,et al."Evolution of Galaxy Types and HI Gas Contents in Galaxy Groups".ASTROPHYSICAL JOURNAL 862.1(2018):14.