The UZC-SSRS2 Group Catalog

Details The UZC-SSRS2 Group Catalog The UZC-SSRS2 Group Catalog

2002-02-18

arxiv.org/abs/astro-ph/0202326v1

Astron.J. 123 (2002) 2976

Astronomy and Astrophysics

Astrophysics

Accepted for publication on AJ

Scientific paper

10.1086/340357

We apply a friends-of-friends algorithm to the combined UZC and SSRS2 redshift surveys to construct a catalog of 1168 groups of galaxies; 411 of these groups have 5 or more members within the redshift survey. The group catalog covers 4.69 steradians and all groups exceed a number density contrast threshold of 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.

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