Abell clusters of galaxies: Catalogs and large-scale structures

Details Abell clusters of galaxies: Catalogs and large-scale structures Abell clusters of galaxies: Catalogs and large-scale structures

May 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991tpsu.rept...59z&link_type=abstract

In MPI für Physik und Astrophysik, Traces of the Primordial Structure in the Universe p 59-68 (SEE N92-29833 20-90)

Astronomy and Astrophysics

Astrophysics

3

Astronomical Catalogs, Galactic Clusters, Galactic Mass, Mass Distribution, Space Density, Galactic Structure, Statistical Analysis

Scientific paper

Results of a statistical analysis of the ACO (Abell, Corwin, and Olowin) and Abell catalogs of clusters of galaxies are summarized together with results on the large scaler distribution of these clusters. New estimates of distances, surface and radial densities are described that were derived for both catalogs. On both catalogs the effects of large scale angular gradients were studied. The ACO catalog appears to be more complete, with a larger volume density of clusters than the Abell catalog. The number density of clusters derived after corrections for angular incompleteness for both catalogs is higher than the value usually used in the literature for the volume density of rich clusters. It is shown with a check made on new redshifts that the distance estimates agree well, within the estimated uncertainties, with measured ones. Figures of the distribution of clusters in the Super Galactic plane, up to distances of 300/h Mpc are summarized and major features of this large scale distribution are outlined. These are especially important also in the light of the issue of large scale peculiar motions.

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