The UZC-SSRS2 Group Catalog
The UZC-SSRS2 Group Catalog
复制标题
DOI：
10.1086/340357
复制
发表时间：
2002-02
期刊：
影响因子：
--
通讯作者：
M. Ramella;M. Geller;A. Pisani;L. D. da Costa
中科院分区：
文献类型：
--
作者：
M. Ramella;M. Geller;A. Pisani;L. D. da Costa
我们应用朋友的朋友算法相结合的更新Zwicky目录和南天红移巡天，构建一个1168组星系的目录，其中411组有5个或更多的成员在红移调查。星群目录覆盖4.69 sr，所有星群都超过了数密度对比阈值δρ/ρ = 80。我们证明，集团目录是均匀的，在两个基本的红移调查;集团及其成员的目录，从而提供了一个基础，为其他统计研究的大规模分布的集团和他们的物理性质。这些星系群的物理性质中位数与独立调查得出的星系群相似，包括ESO关键计划和Las Campanas红移调查。我们包括组及其成员的表。
We apply a friends-of-friends algorithm to the combined Updated Zwicky Catalog and Southern Sky Redshift Survey to construct a catalog of 1168 groups of galaxies; 411 of these groups have five or more members within the redshift survey. The group catalog covers 4.69 sr, and all groups exceed the number density contrast threshold, δρ/ρ = 80. We demonstrate that the groups catalog is homogeneous across the two underlying redshift surveys; the catalog of groups and their members thus provides a basis for other statistical studies of the large-scale distribution of groups and their physical properties. The median physical properties of the groups are similar to those for groups derived from independent surveys, including the ESO Key Programme and the Las Campanas Redshift Survey. We include tables of groups and their members.