Quasars in rich galaxy clusters

Details Quasars in rich galaxy clusters Quasars in rich galaxy clusters

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993egte.conf..309e&link_type=abstract

In NASA. Ames Research Center, The Evolution of Galaxies and Their Environment p 309-310 (SEE N93-26706 10-90)

Other

Active Galactic Nuclei, Galactic Clusters, Quasars, Galaxies, Spectroscopy, Velocity Distribution

Scientific paper

The evolution of AGN activity in rich clusters of galaxies is found to be approximately 5 times more rapid than that in poor clusters. This rapid evolution may be driven by evolution in the dynamics of galaxy cluster cores. Results from our spectroscopic studies of galaxies associated with quasars are consistent with this scenario, in that bright AGN are preferentially found in regions of lower velocity dispersion. Alternately, the evolution may be driven by formation of a dense intra-cluster medium (ICM). Galaxies close to quasars in rich cluster cores are much bluer (presumably gas rich) than galaxies in the cores of other rich clusters, in support of this model.

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