An empirical model for the star formation history in dark matter haloes

	An empirical model for the star formation history in dark matter haloes
	Lu, Zhankui 1; Mo, H. J.1; Lu, Yu 2; Katz, Neal 1; Weinberg, Martin D.1; van den Bosch, Frank C.3; Yang, Xiaohu 4,5
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2014-04-01
卷号	439 期号:2 页码:1294-1312
关键词	methods: statistical galaxies: formation galaxies: haloes
通讯作者	杨小虎
英文摘要	We develop an empirical approach to infer the star formation rate in dark matter haloes from the galaxy stellar mass function (SMF) at different redshifts and the local cluster galaxy luminosity function (CGLF), which has a steeper faint end relative to the SMF of local galaxies. As satellites are typically old galaxies which have been accreted earlier, this feature can cast important constraint on the formation of low-mass galaxies at high redshift. The evolution of the SMFs suggests the star formation in high-mass haloes (> 10(12) h(-1) M-circle dot) has to be boosted at high redshift beyond what is expected from a simple scaling of the dynamical time. The faint end of the CGLF implies a characteristic redshift z(c) approximate to 2 above which the star formation rate in low-mass haloes with masses < 10(11) h(-1) M-circle dot must be enhanced relative to that at lower z. This is not directly expected from the standard stellar feedback models. Also, this enhancement leads to some interesting predictions, for instance, a significant old stellar population in present-day dwarf galaxies with M-star < 10(8) h(-2) M-circle dot and steep slopes of high-redshift stellar mass and star formation rate functions.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	STELLAR MASS FUNCTION ; DWARF GALAXY POPULATION ; LYMAN-BREAK GALAXIES ; STEEP FAINT-END ; LUMINOSITY FUNCTION ; ANALYTIC MODEL ; COMPREHENSIVE ANALYSIS ; ACCRETION HISTORIES ; FORMATION RATES ; LOCAL UNIVERSE
收录类别	SCI
语种	英语
WOS记录号	WOS:000334114000007
公开日期	2015-02-14
内容类型	期刊论文
源URL	[http://119.78.226.72//handle/331011/15832]
专题	上海天文台_星系宇宙学重点实验室
作者单位	1.Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA 2.Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94309 USA 3.Yale Univ, Dept Astron, New Haven, CT 06520 USA 4.Shanghai Jiao Tong Univ, Ctr Astron & Astrophys, Shanghai 200240, Peoples R China 5.Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China
推荐引用方式 GB/T 7714	Lu, Zhankui,Mo, H. J.,Lu, Yu,et al. An empirical model for the star formation history in dark matter haloes[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2014,439(2):1294-1312.
APA	Lu, Zhankui.,Mo, H. J..,Lu, Yu.,Katz, Neal.,Weinberg, Martin D..,...&Yang, Xiaohu.(2014).An empirical model for the star formation history in dark matter haloes.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,439(2),1294-1312.
MLA	Lu, Zhankui,et al."An empirical model for the star formation history in dark matter haloes".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 439.2(2014):1294-1312.