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arXiv 1806.09672astro-ph.GAastro-ph.CO
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星系团的动力学及其与星系演化的关系

Kinematics of cluster galaxies and their relation to galaxy evolution

Susmita Adhikari, Neal Dalal, Surhud More, Andrew Wetzel

摘要:

我们研究大质量星系团内星系的运动学,作为星系团内恒星形成猝灭物理的一个探针。使用N-体模拟,我们认为,卫星运动学提供的信息是补充(瞬时)卫星的空间分布的星系陷落。将模拟结果与真实星系团的测量结果进行比较,我们发现红色(静止)卫星星系的运动学与蓝色(恒星形成)卫星星系的运动学相一致。

英文摘要:

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. 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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