Profiles of dark matter haloes at high redshift

被引：5

作者：

Del Popolo, A

机构：

[1] Univ Statale Bergamo, Dipartimento Matemat, I-24129 Bergamo, Italy

[2] Feza Gursey Inst, Istanbul, Turkey

[3] Bogazici Univ, Dept Phys, TR-80815 Bebek, Istanbul, Turkey

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2001年 / 325卷 / 03期

关键词：

galaxies : formation; cosmology : theory; large-scale structure of Universe;

D O I：

10.1046/j.1365-8711.2001.04539.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

I study the evolution of halo density profiles as a function of time in the SCDM and Lambda CDM cosmologies. Following Del Popolo, I calculate the concentration parameter c = r(v)/a and study its time evolution. For a given halo mass, I find that c(z) proportional to 1/(1 + z) in both the Lambda CDM and SCDM cosmology, in agreement with the analytic model of Bullock et al. and N-body simulations. In both models, a(z) is roughly constant. The present model predicts a stronger evolution of c(z) with respect to the Navarro, Frenk & White model. Finally I show some consequences of the results on galaxy modelling.

引用

页码：1190 / 1196

页数：7