THE DISTRIBUTION OF FAINT SATELLITES AROUND CENTRAL GALAXIES IN THE CANADA-FRANCE-HAWAII TELESCOPE LEGACY SURVEY

	THE DISTRIBUTION OF FAINT SATELLITES AROUND CENTRAL GALAXIES IN THE CANADA-FRANCE-HAWAII TELESCOPE LEGACY SURVEY
	Jiang, C. Y.; Jing, Y. P.; Li, Cheng
刊名	ASTROPHYSICAL JOURNAL
	2012-11-20
卷号	760 期号:1 页码:16
关键词	cosmology: observations galaxies: luminosity function galaxies: statistics Local Group mass function
英文摘要	We investigate the radial number density profile and the abundance distribution of faint satellites around central galaxies in the low-redshift universe using the Canada-France-Hawaii Telescope (CFHT) Legacy Survey. We consider three samples of central galaxies with magnitudes of M-r = -21, -22, and -23 selected from the Sloan Digital Sky Survey group catalog of Yang et al. The satellite distribution around these central galaxies is obtained by cross-correlating these galaxies with the photometric catalog of the CFHT Legacy Survey. The projected radial number density of the satellites obeys a power-law form with the best-fit logarithmic slope of -1.05, independent of both the central galaxy luminosity and the satellite luminosity. The projected cross-correlation function between central and satellite galaxies exhibits a non-monotonic trend with satellite luminosity. It is most pronounced for central galaxies with M-r = -21, where the decreasing trend of clustering amplitude with satellite luminosity is reversed when satellites are fainter than central galaxies by more than 2 mag. A comparison with the satellite luminosity functions in the Milky Way (MW) and M31 shows that the MW/M31 system has about twice as many satellites as around a typical central galaxy of similar luminosity. The implications for theoretical models are briefly discussed.
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 ; DARK-MATTER HALOS ; NUMBER DENSITY PROFILES ; MILKY-WAY ; LUMINOSITY FUNCTION ; MAGELLANIC-CLOUD ; STELLAR MASS ; PHOTOMETRIC REDSHIFTS ; SPATIAL-DISTRIBUTION ; COLOR DEPENDENCE
收录类别	SCI
语种	英语
WOS记录号	WOS:000310922200016
公开日期	2015-01-27
内容类型	期刊论文
源URL	[http://119.78.226.72//handle/331011/15441]
专题	上海天文台_星系宇宙学重点实验室
作者单位	Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China
推荐引用方式 GB/T 7714	Jiang, C. Y.,Jing, Y. P.,Li, Cheng. THE DISTRIBUTION OF FAINT SATELLITES AROUND CENTRAL GALAXIES IN THE CANADA-FRANCE-HAWAII TELESCOPE LEGACY SURVEY[J]. ASTROPHYSICAL JOURNAL,2012,760(1):16.
APA	Jiang, C. Y.,Jing, Y. P.,&Li, Cheng.(2012).THE DISTRIBUTION OF FAINT SATELLITES AROUND CENTRAL GALAXIES IN THE CANADA-FRANCE-HAWAII TELESCOPE LEGACY SURVEY.ASTROPHYSICAL JOURNAL,760(1),16.
MLA	Jiang, C. Y.,et al."THE DISTRIBUTION OF FAINT SATELLITES AROUND CENTRAL GALAXIES IN THE CANADA-FRANCE-HAWAII TELESCOPE LEGACY SURVEY".ASTROPHYSICAL JOURNAL 760.1(2012):16.