THE ENVIRONMENT OF BARRED GALAXIES IN THE LOW-REDSHIFT UNIVERSE

	THE ENVIRONMENT OF BARRED GALAXIES IN THE LOW-REDSHIFT UNIVERSE
	Lin, Ye 1,2; Sodi, Bernardo Cervantes 1,2,3; Li, Cheng 1,2; Wang, Lixin 1,2; Wang, Enci 1,2
刊名	ASTROPHYSICAL JOURNAL
	2014-12-01
卷号	796 期号:2 页码:98
关键词	galaxies: elliptical and lenticular galaxies: halos galaxies: spiral galaxies: structure large-scale structure of universe methods: statistical cD
通讯作者	李成
英文摘要	We present a study of the environment of barred galaxies using a volume-limited sample of over 30,000 galaxies drawn from the Sloan Digital Sky Survey. We use four different statistics to quantify the environment: the projected two-point cross-correlation function, the background-subtracted number count of neighbor galaxies, the overdensity of the local environment, and the membership of our galaxies to galaxy groups to segregate central and satellite systems. For barred galaxies as a whole, we find a very weak difference in all the quantities compared to unbarred galaxies of the control sample. When we split our sample into early- and late-type galaxies, we see a weak but significant trend for early-type galaxies with a bar to be more strongly clustered on scales from a few 100 kpc to 1 Mpc when compared to unbarred early-type galaxies. This indicates that the presence of a bar in early-type galaxies depends on the location within their host dark matter halos. This is confirmed by the group catalog in the sense that for early-types, the fraction of central galaxies is smaller if they have a bar. For late-type galaxies, we find fewer neighbors within similar to 50 kpc around the barred galaxies when compared to unbarred galaxies from the control sample, suggesting that tidal forces from close companions suppress the formation/growth of bars. Finally, we find no obvious correlation between overdensity and the bars in our sample, showing that galactic bars are not obviously linked to the large-scale structure of the universe.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	DIGITAL SKY SURVEY ; STAR-FORMING GALAXIES ; DARK-MATTER HALOES ; DISK GALAXIES ; SECULAR EVOLUTION ; SPIRAL GALAXIES ; STELLAR BARS ; COMA CLUSTER ; DYNAMICAL FRICTION ; LENTICULAR GALAXIES
收录类别	SCI
语种	英语
WOS记录号	WOS:000344878900027
公开日期	2015-02-14
内容类型	期刊论文
源URL	[http://119.78.226.72//handle/331011/15774]
专题	上海天文台_星系宇宙学重点实验室
作者单位	1.Shanghai Astron Observ, Max Planck Inst Astrophys, Partner Grp, Shanghai 200030, Peoples R China 2.Chinese Acad Sci, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China 3.Korea Inst Adv Study, Sch Phys, Seoul 130722, South Korea
推荐引用方式 GB/T 7714	Lin, Ye,Sodi, Bernardo Cervantes,Li, Cheng,et al. THE ENVIRONMENT OF BARRED GALAXIES IN THE LOW-REDSHIFT UNIVERSE[J]. ASTROPHYSICAL JOURNAL,2014,796(2):98.
APA	Lin, Ye,Sodi, Bernardo Cervantes,Li, Cheng,Wang, Lixin,&Wang, Enci.(2014).THE ENVIRONMENT OF BARRED GALAXIES IN THE LOW-REDSHIFT UNIVERSE.ASTROPHYSICAL JOURNAL,796(2),98.
MLA	Lin, Ye,et al."THE ENVIRONMENT OF BARRED GALAXIES IN THE LOW-REDSHIFT UNIVERSE".ASTROPHYSICAL JOURNAL 796.2(2014):98.