Eccentricity evolution in simulated galaxy clusters

被引：10
|
作者：
Floor, SN [1 ]
Melott, AL
Miller, CJ
Bryan, GL
机构：
[1] Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA
[2] Carnegie Mellon Univ, Dept Phys & Astron, Pittsburgh, PA 15213 USA
[3] Univ Oxford, Dept Astrophys, Oxford OX1 3RH, England
来源：
ASTROPHYSICAL JOURNAL | 2003年 / 591卷 / 02期
关键词：
galaxies : clusters : general; large-scale structure of universe;
D O I：
10.1086/375493
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Strong cluster eccentricity evolution for z less than or equal to 0.13 has appeared in a variety of observational data sets. We examine the evolution of eccentricity in simulated galaxy clusters using a variety of simulation methodologies, amplitude normalizations, and background cosmologies. We do not find such evolution for z < 0.1 in any of our simulation ensembles. We suggest a systematic error in the form of a redshift-dependent selection effect in cluster catalogs or missing physics in cluster simulations important enough to modify the cluster morphology.
引用
收藏
页码：741 / 748
页数：8
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