The conditional colour-magnitude distribution - I. A comprehensive model of the colour-magnitude-halo mass distribution of present-day galaxies

doi:10.1093/mnras/sty2615

CORC > 上海天文台 > 中国科学院上海天文台

	The conditional colour-magnitude distribution - I. A comprehensive model of the colour-magnitude-halo mass distribution of present-day galaxies
	Xu, Haojie 1,2; Zheng, Zheng 1,2,3; Guo, Hong 4; Zu, Ying 2,5,6; Zehavi, Idit 7,8; Weinberg, David H.5,6
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2018-12-01
卷号	481 期号:4 页码:5470-5500
关键词	galaxies: distances and redshifts galaxies: haloes galaxies: statistics large-scale structure of Universe cosmology: observations
ISSN号	0035-8711
DOI	10.1093/mnras/sty2615
英文摘要	We formulate a model of the conditional colour-magnitude distribution (CCMD) to describe the distribution of galaxy luminosity and colour as a function of halo mass. It consists of two populations of different colour distributions, dubbed pseudo-blue and pseudo-red, respectively, with each further separated into central and satellite galaxies. We define a global parametrization of these four colour-magnitude distributions and their dependence on halo mass, and we infer parameter values by simultaneously fitting the space densities and autocorrelation functions of 79 galaxy samples from the Sloan Digital Sky Survey defined by fine bins in the colour-magnitude diagram (CMD). The model deprojects the overall galaxy CMD, revealing its tomography along the halo mass direction. The bimodality of the colour distribution is driven by central galaxies at most luminosities, though at low luminosities it is driven by the difference between blue centrals and red satellites. For central galaxies, the two pseudo-colour components are distinct and orthogonal to each other in the CCMD: at fixed halomass, pseudo-blue galaxies have a narrow luminosity range and broad colour range, while pseudo-red galaxies have a narrow colour range and broad luminosity range. For pseudo-blue centrals, luminosity correlates tightly with halo mass, while for pseudo-red galaxies colour correlatesmore tightly (redder galaxies in more massive haloes). The satellite fraction is higher for redder and for fainter galaxies, with colour a stronger indicator than luminosity. We discuss the implications of the results and further applications of the CCMD model.
资助项目	Willard L. and Ruth P. Eccles Foundation ; NSF[AST-1612085] ; Science and Technology Commission of Shanghai Municipality[16DZ2260200] ; National Natural Science Foundation of China[11655002] ; Center for High Performance Computing at the University of Utah ; Gauss Centre for Supercomputing e.V. ; Spanish MultiDark Consolider Project[CSD2009-00064] ; Alfred P. Sloan Foundation ; National Science Foundation ; U.S. Department of Energy ; National Aeronautics and Space Administration ; Japanese Monbukagakusho ; Max Planck Society ; Higher Education Funding Council for England ; American Museum of Natural History ; Astrophysical Institute Potsdam ; University of Basel ; University of Cambridge ; Case Western Reserve University ; University of Chicago ; Drexel University ; Fermilab ; Institute for Advanced Study ; Japan Participation Group ; Johns Hopkins University ; Joint Institute for Nuclear Astrophysics ; Kavli Institute for Particle Astrophysics and Cosmology ; Korean Scientist Group ; Chinese Academy of Sciences (LAMOST) ; Los Alamos National Laboratory ; Max-Planck-Institute for Astronomy (MPIA) ; MaxPlanck-Institute for Astrophysics (MPA) ; New Mexico State University ; Ohio State University ; University of Pittsburgh ; University of Portsmouth ; Princeton University ; United States Naval Observatory ; University of Washington ; Partnership for Advanced Supercomputing in Europe (PRACE)
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000454575100090
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/32003]
专题	中国科学院上海天文台
通讯作者	Xu, Haojie; Zheng, Zheng
作者单位	1.Univ Utah, Dept Phys & Astron, 115 South 1400 East, Salt Lake City, UT 84112 USA 2.Shanghai Jiao Tong Univ, Dept Astron, Shanghai 200240, Peoples R China 3.Tsung Dao Lee Inst, Shanghai 200240, Peoples R China 4.Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China 5.Ohio State Univ, Dept Astron, 174 W 18th Ave, Columbus, OH 43210 USA 6.Ohio State Univ, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA 7.Case Western Reserve Univ, Dept Astron, 10900 Euclid Ave, Cleveland, OH 44106 USA 8.Case Western Reserve Univ, Dept Phys, 10900 Euclid Ave, Cleveland, OH 44106 USA
推荐引用方式 GB/T 7714	Xu, Haojie,Zheng, Zheng,Guo, Hong,et al. The conditional colour-magnitude distribution - I. A comprehensive model of the colour-magnitude-halo mass distribution of present-day galaxies[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,481(4):5470-5500.
APA	Xu, Haojie,Zheng, Zheng,Guo, Hong,Zu, Ying,Zehavi, Idit,&Weinberg, David H..(2018).The conditional colour-magnitude distribution - I. A comprehensive model of the colour-magnitude-halo mass distribution of present-day galaxies.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,481(4),5470-5500.
MLA	Xu, Haojie,et al."The conditional colour-magnitude distribution - I. A comprehensive model of the colour-magnitude-halo mass distribution of present-day galaxies".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 481.4(2018):5470-5500.