The two-point correlation function for groups of galaxies in the Center for Astrophysics redshift survey

Details The two-point correlation function for groups of galaxies in the Center for Astrophysics redshift survey The two-point correlation function for groups of galaxies in the Center for Astrophysics redshift survey

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...353...51r&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 353, April 10, 1990, p. 51-58. Research supported by the Smithsonian Instit

Astronomy and Astrophysics

Astronomy

40

Correlation, Galactic Clusters, Red Shift, Sky Surveys (Astronomy), Astronomical Catalogs, Spatial Distribution

Scientific paper

The large-scale distribution of groups of galaxies selected from complete slices of the CfA redshift survey extension is examined. The survey is used to reexamine the contribution of group members to the galaxy correlation function. The relationship between the correlation function for groups and those calculated for rich clusters is discussed, and the results for groups are examined as an extension of the relation between correlation function amplitude and richness. The group correlation function indicates that groups and individual galaxies are equivalent tracers of the large-scale matter distribution. The distribution of group centers is equivalent to random sampling of the galaxy distribution. The amplitude of the correlation function for groups is consistent with an extrapolation of the amplitude-richness relation for clusters. The amplitude scaled by the mean intersystem separation is also consistent with results for richer clusters.

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