Constraining evolution in the halo model using galaxy redshift surveys

被引：60

作者：

Yan, RB

Madgwick, DS

White, M

机构：

[1] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[3] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

来源：

ASTROPHYSICAL JOURNAL | 2003年 / 598卷 / 02期

关键词：

cosmology : theory; galaxies : halos; galaxies : high-redshift;

D O I：

10.1086/379067

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We use the latest observations from the 2dF Galaxy Redshift Survey to fit the conditional luminosity function (CLF) formulation of the halo model for galaxies at z = 0. This fit is then used to test the extent of evolution in the halo occupation distribution to z = 0.8, by comparing the predicted clustering from this CLF to preliminary results from the DEEP2 Redshift Survey. We show that the current observations from the DEEP2 Redshift Survey are remarkably consistent with no evolution in the CLF from z = 0 to 0.8. This result is surprising, in that it suggests that there has been very little change in the way galaxies occupy their host dark matter halos over half the age of the universe. We discuss in detail the observational constraints we have adopted and also the various selection effects in each survey and how these affect the galaxy populations encountered in each survey.

引用

页码：848 / 857

页数：10

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