Finding protoclusters to trace galaxy evolution – I. The finder and its performance
Finding protoclusters to trace galaxy evolution – I. The finder and its performance
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寻找原星系团以追踪星系演化——一、探测器及其性能
DOI:
10.1093/mnras/stab1608
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发表时间:
2021-04
影响因子:
4.8
通讯作者:
Yangyao Chen
中科院分区:
文献类型:
--
作者:
Kai Wang;Houjun Mo;Cheng Li;Yangyao Chen
We develop a method to identify proto-clusters based on dark matter halos represented by galaxy groups selected from surveys of galaxies at high redshift. We test the performance of this method on halos in N-body simulations, and find it can correctly identify more than 85% of the true proto-clusters with $gtrsim$ 95% purity and with mass estimates typical within 0.25 dex from their true values. We show how the information provided by the proto-clusters can be used to link galaxies in present-day clusters of galaxies with their high redshift progenitors. Our tests show that the proto-clusters identified by our method can recover reliably the progenitor stellar mass distribution of galaxies, thereby providing an avenue to investigate the formation and evolution of present-day galaxy clusters and their member galaxies.
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