Optical Substructure analysis of Galaxy Cluster Abell 2142
首发时间:2017-04-25
Abstract:Galaxy cluster A2142 is a famous merging cluster. With X-ray telescope, its elongated morphology, sharp cold front, and in-falling group in the outskirt can be clearly seen. But without independent crosschecking method, its physical and dynamical properties are still hard to measure. We adopt the new hierarchical tree analysis method to explore its substructure with redshifts of its member galaxies. The substructures we find associate with its X-ray patterns very well. The complex dynamical status and the merging history of A2142 are revealed.
keywords: Galaxy cluster: A2142 substructure dynamical status merging history
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No.4725594110427814****
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