The halos of rich clusters of galaxies. I - an infall model for the Coma Cluster

Details The halos of rich clusters of galaxies. I - an infall model for the Coma Cluster The halos of rich clusters of galaxies. I - an infall model for the Coma Cluster

Nov 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...262....9s&link_type=abstract

Astrophysical Journal, Part 1, vol. 262, Nov. 1, 1982, p. 9-14.

Mathematics

Logic

13

Astronomical Models, Galactic Clusters, Galactic Structure, Halos, Dynamic Models, Hubble Constant, Mass Distribution, Red Shift, Velocity Distribution

Scientific paper

The large mass of a cluster of galaxies slows the Hubble expansion in a surrounding volume. The ratio of the matter density near the cluster to the average density at large distances grows as the cosmological density parameter Omega, decreases. When Omega is less than 0.2, the gravitational attraction of the Coma Cluster acting upon an initially homogeneous external medium is sufficient to account for a galaxy population comparable to that of the Coma Supercluster.

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