The Mass of Virialized Dark Matter Haloes

被引：0
|
作者：
Cuesta, Antonio J. [1 ]
Prada, Francisco [1 ]
机构：
[1] CSIC, Inst Astrofis Andalucia, Madrid, Spain
来源：
PANORAMIC VIEWS OF GALAXY FORMATION AND EVOLUTION, PROCEEDINGS | 2008年 / 399卷
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D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Virial mass is used as an estimator for the mass of a dark matter halo. However, the commonly used constant overdensity criterion does not reflect the dynamical structure of haloes. Here we analyze dark matter cosmological simulations in order to obtain properties of haloes of different masses focusing on the size of the region with zero mean radial velocity. Dark matter inside this region is stationary, and thus the mass of this region is a much better approximation for the virial mass.
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页码：121 / 122
页数：2
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