Forces of Low-Mass Destruction: The Harsh Cluster Environment

Details Forces of Low-Mass Destruction: The Harsh Cluster Environment Forces of Low-Mass Destruction: The Harsh Cluster Environment

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...202.1902b&link_type=abstract

American Astronomical Society Meeting 202, #19.02; Bulletin of the American Astronomical Society, Vol. 35, p.725

Astronomy and Astrophysics

Astronomy

Scientific paper

The results of an ongoing survey of low-redshift galaxy clusters (z<= 0.2) indicate that there is a deficiency of dwarf galaxies in the central cluster region. Examination of the luminosity function, dwarf-to-giant ratio, and the (Blue/Red) fraction (all as a function of cluster-centric radius --- normalized with respect to the virial radius), supports this conclusion. These results, along with the comparison of the color gradient of the dwarf galaxy population with the color gradient of the Brightest Cluster Galaxy (BCG) envelope, are consistent with the hypothesis that the tidal disruption of dwarf galaxies has contributed to the formation of the BCG halo.

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