A comparison of ACO and Abell catalogs of clusters

Details A comparison of ACO and Abell catalogs of clusters A comparison of ACO and Abell catalogs of clusters

Feb 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aj....101..342s&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 101, Feb. 1991, p. 342-353.

Astronomy and Astrophysics

Astronomy

66

Astronomical Catalogs, Galactic Clusters, Density Distribution, Red Shift, Spatial Distribution, Statistical Analysis

Scientific paper

The results of a statistical analysis of the ACO and Abell catalog of clusters of galaxies are presented. For both catalogs, new estimates of distances, surface, and radial densities are derived. In particular, for the ACO catalog it is found that the derived radial-density distribution (including R = 0 clusters) is consistent with a uniform density of clusters up to at least 350/h Mpc. Moreover, within this distance the ACO data do not show any significant deficiency of R = 0 clusters. In both catalogs the effects of large angular gradients and derive maximum-likelihood estimates for the interesting parameters (i.e., galactic latitude and zenithal dependencies) are also studied. The ACO catalog appears to be more complete, with a larger volume density of clusters than the Abell catalog.

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