Modelling galaxy clustering in a high-resolution simulation of structure formation

	Modelling galaxy clustering in a high-resolution simulation of structure formation
	Wang, Lan ; Li, Cheng ; Kauffmann, Guinevere ; De Lucia, Gabriella
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2006-09-11
卷号	371 期号:2 页码:537-547
关键词	galaxies : distances and redshifts galaxies : fundamental parameters galaxies : haloes cosmology : theory dark matter large-scale structure of Universe
英文摘要	We use the Millennium Simulation, a 10 billion particle simulation of the growth of cosmic structure, to construct a new model of galaxy clustering. We adopt a methodology that falls midway between the traditional semi-analytic approach and the halo occupation distribution (HOD) approach. In our model, we adopt the positions and velocities of the galaxies that are predicted by following the orbits and merging histories of the substructures in the simulation. Rather than using star formation and feedback 'recipes' to specify the physical properties of the galaxies, we adopt parametrized functions to relate these properties to the quantity M-infall, defined as the mass of the halo at the epoch when the galaxy was last the central dominant object in its own halo. We test whether these parametrized relations allow us to recover the basic statistical properties of galaxies in the semi-analytic catalogues, including the luminosity function, the stellar mass function and the shape and amplitude of the two-point correlation function evaluated in different stellar mass and luminosity ranges. We then use our model to interpret recent measurements of these quantities from Sloan Digital Sky Survey (SDSS) data. We derive relations between the luminosities and the stellar masses of galaxies in the local Universe and their host halo masses. Our results are in excellent agreement with recent determinations of these relations by Mandelbaum et al. using galaxy-galaxy weak lensing measurements from the SDSS.
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 HALOES ; REDSHIFT SURVEY ; LUMINOSITY FUNCTION ; OCCUPATION DISTRIBUTION ; SPECTRAL TYPE ; MASS ; DEPENDENCE ; BIAS ; EVOLUTION
收录类别	SCI
语种	英语
WOS记录号	WOS:000240201200003
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/19326]
专题	上海天文台_星系宇宙学重点实验室
作者单位	1.Peking Univ, Dept Astron, Beijing 100871, Peoples R China 2.Max Planck Inst Astrophys, D-85748 Garching, Germany 3.Univ Sci & Technol China, Ctr Astrophys, Hefei 230026, Anhui, Peoples R China 4.Shanghai Astron Observ, Partner Grp MPI Astrophys, Shanghai 200030, Peoples R China
推荐引用方式 GB/T 7714	Wang, Lan,Li, Cheng,Kauffmann, Guinevere,et al. Modelling galaxy clustering in a high-resolution simulation of structure formation[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2006,371(2):537-547.
APA	Wang, Lan,Li, Cheng,Kauffmann, Guinevere,&De Lucia, Gabriella.(2006).Modelling galaxy clustering in a high-resolution simulation of structure formation.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,371(2),537-547.
MLA	Wang, Lan,et al."Modelling galaxy clustering in a high-resolution simulation of structure formation".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 371.2(2006):537-547.