Kinematics of Cluster Galaxies and Their Relation to Galaxy Evolution

被引：12
作者：
Adhikari, Susmita [1 ,2 ]
Dalal, Neal [3 ]
More, Surhud [4 ]
Wetzel, Andrew [5 ]
机构：
[1] Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, 452 Lomita Mall, Stanford, CA 94305 USA
[2] Univ Illinois, Dept Astron, 1002 W Green St, Urbana, IL 61801 USA
[3] Perimeter Inst Theoret Phys, 31 Caroline St N, Waterloo, ON N2L 2Y5, Canada
[4] Univ Tokyo, Kavli Inst Phys & Math Universe WPI, 5-1-5 Kashiwanoha, Kashiwa, Chiba 2778583, Japan
[5] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA
来源：
ASTROPHYSICAL JOURNAL | 2019年 / 878卷 / 01期
关键词：
cosmology: observations; galaxies: evolution; galaxies: formation; galaxies: kinematics and dynamics; STAR-FORMATION HISTORIES; QUENCHING TIME-SCALES; SATELLITE KINEMATICS; ASSEMBLY BIAS; MATTER; IDENTIFICATION; LUMINOSITY; REDMAPPER; DENSITY; MASS;
D O I：
10.3847/1538-4357/ab1a39
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We study the kinematics of galaxies within massive clusters, as a probe of the physics of star formation quenching within clusters. Using N-body simulations, we argue that satellite kinematics provide information about galaxy infall that is complementary to the (instantaneous) spatial distribution of satellites and can help distinguish between models of quenching that require intracluster processes from those that do not. Comparing the simulation results with measurements of real cluster galaxies, we find evidence that the kinematics of red (quiescent) satellite galaxies are consistent with earlier infall times than that of blue (star-forming) satellites.
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页数：13
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