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

Journal Article · Sun Apr 01 04:00:00 EDT 1990 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/168588· OSTI ID:6865083

Ramella, M; Geller, M J; Huchra, J P ^[1]

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1. Osservatorio Astronomico, Trieste (Italy) Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (USA)

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. 35 refs.

• OSTI ID: 6865083
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 353; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CATALOGS
CORRELATION FUNCTIONS
DISTRIBUTION
DOCUMENT TYPES
FUNCTIONS
GALAXY CLUSTERS
MASS DISTRIBUTION
RED SHIFT
SPATIAL DISTRIBUTION
SURVEYS