The alignment between the distribution of satellites and the orientation of their central galaxy

	The alignment between the distribution of satellites and the orientation of their central galaxy
	Yang, XH ; van den Bosch, FC ; Mo, HJ ; Mao, SD ; Kang, X ; Weinmann, SM ; Guo, YC ; Jing, YP
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2006-07-01
卷号	369 期号:3 页码:1293-1302
关键词	methods : statistical galaxies : haloes galaxies : structure dark matter large-scale structure of Universe
英文摘要	We use galaxy groups selected from the Sloan Digital Sky Survey to examine the alignment between the orientation of the central galaxy (defined as the brightest group member) and the distribution of satellite galaxies. By construction, we therefore only address the alignment on scales smaller than the halo virial radius. We find a highly significant alignment of satellites with the major axis of their central galaxy. This is in qualitative agreement with the recent study of Brainerd, but inconsistent with several previous studies who detected a preferential minor-axis alignment. The alignment strength in our sample is strongest between red central galaxies and red satellites. On the contrary, the satellite distribution in systems with a blue central galaxy is consistent with isotropic. We also find that the alignment strength is stronger in more massive haloes and at smaller projected radii from the central galaxy. In addition, there is a weak indication that fainter (relative to the central galaxy) satellites are more strongly aligned. We present a detailed comparison with previous studies, and discuss the implications of our findings for galaxy formation.
学科主题	星系和宇宙学研究中心
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	DARK-MATTER HALOES ; DIGITAL SKY SURVEY ; ANGULAR-MOMENTUM DISTRIBUTION ; LEO-SCULPTOR STREAM ; RADIAL-DISTRIBUTION ; DENSITY PROFILES ; MILKY-WAY ; ANISOTROPIC DISTRIBUTION ; SUBHALO POPULATIONS ; SPIRAL GALAXIES
收录类别	SCI
语种	英语
WOS记录号	WOS:000238353800025
公开日期	2010-11-08
内容类型	期刊论文
源URL	[http://119.78.226.72//handle/331011/11921]
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, Shanghai 200030, Peoples R China 2.Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA 3.Max Planck Inst Astron, D-69117 Heidelberg, Germany 4.Univ Manchester, Jodrell Bank Observ, Macclesfield SK11 9DL, Cheshire, England 5.Univ Oxford, Dept Astrophys, Oxford OX1 3RH, England 6.Univ Zurich, Inst Theoret Phys, CH-8057 Zurich, Switzerland
推荐引用方式 GB/T 7714	Yang, XH,van den Bosch, FC,Mo, HJ,et al. The alignment between the distribution of satellites and the orientation of their central galaxy[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2006,369(3):1293-1302.
APA	Yang, XH.,van den Bosch, FC.,Mo, HJ.,Mao, SD.,Kang, X.,...&Jing, YP.(2006).The alignment between the distribution of satellites and the orientation of their central galaxy.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,369(3),1293-1302.
MLA	Yang, XH,et al."The alignment between the distribution of satellites and the orientation of their central galaxy".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 369.3(2006):1293-1302.