The impact of ICM substructure on ram pressure stripping

被引：0
|
作者：
Tonnesen, Stephanie [1 ]
Bryan, Greg L. [1 ]
机构：
[1] Columbia Univ, Dept Astron, Pupin Phys Labs, New York, NY 10027 USA
来源：
ASTROPHYSICAL JOURNAL LETTERS | 2008年 / 684卷 / 01期
关键词：
galaxies : clusters : general; galaxies : interactions; methods : n-body simulations;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Cluster galaxies moving through the intracluster medium (ICM) are expected to lose some of their interstellar medium ( ISM) through ram pressure stripping and related ISM-ICM interactions. Using high-resolution cosmological simulations of a large galaxy cluster including star formation, we show that the ram pressure a galaxy experiences at a fixed distance from the cluster center can vary by well over an order of magnitude We find that this variation in ram pressure is due in almost equal parts to variation in the ICM density and in the relative velocity between the galaxy and the ICM. We also find that the ICM and galaxy velocities are weakly correlated for infalling galaxies.
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页码：L9 / L12
页数：4
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