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

页码：741 / 748

页数：8

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