Correlation properties of loose groups

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Angular Correlation, Galactic Clusters, Galactic Structure, Astronomical Catalogs, Data Correlation, Spatial Distribution

Scientific paper

The two-point spatial correlation function for loose groups of galaxies is computed, using the recently compiled catalog of groups in the southern hemisphere. It is found that the correlation function for groups has a similar slope to that of galaxies but with a smaller amplitude, confirming an earlier result obtained from a similar analysis of the CfA group catalog. This implies that groups of galaxies are more randomly distributed than galaxies, which may be consistent with the predictions of Kashlinsky (1987) for a gravitational clustering scenario for the formation of large-scale structures.

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