Compared with the merging cluster A2255, the star formation history for the late-type cluster galaxies is likely closely related to the virialization stage of parent cluster.
我们认为，是A2255中子团的并合历史导致了星系团中星系与星系之间的碰撞概率增加，从而使团中心附近的晚型星系的恒星形成活动增加了。
The cluster representative was constructed by three successive steps named Tree matching, Tree merging and Tree pruning.
为了构建聚类代表，算法通过构造最佳匹配树，合并树，修剪树三步来实现。
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