Composite Luminosity Function of Low-Redshift Galaxy Clusters

Details Composite Luminosity Function of Low-Redshift Galaxy Clusters Composite Luminosity Function of Low-Redshift Galaxy Clusters

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...19916106b&link_type=abstract

American Astronomical Society, 199th AAS Meeting, #161.06; Bulletin of the American Astronomical Society, Vol. 34, p.573

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the composite luminosity function of a sample of 70 low-redshift (0.02 <= z <= 0.18) galaxy clusters. Luminosity functions have been measured for several annular regions centered on the Brightest Cluster Galaxy. Each of the selected regions is based on the dynamical radius of each cluster (r200). We find that the inner regions have a significantly flatter faint-end slope than the outer regions. The dwarf-to-giant galaxy ratio is also smaller for the inner region than for the outer region. These results are consistent with the hypothesis that a large fraction of dwarf galaxies near cluster centers have been tidally disrupted.

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