Probing Cluster Galaxies with Background QSOs

Details Probing Cluster Galaxies with Background QSOs Probing Cluster Galaxies with Background QSOs

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aspc..396..131b&link_type=abstract

Formation and Evolution of Galaxy Disks ASP Conference Series, Vol. 396, Proceedings of the conference held 1-5 October, 2007 at

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We present the results of the first survey of intervening Mg II absorption systems associated with high-z cluster galaxies. We investigated the incidence (dN/dz) of Mg II absorbers in < z > = 0.6 cluster galaxies from the Red-Sequence Cluster Survey. While strong (W_0>1.0 Å) absorbers show a significant excess (up to 10 ×), weak (W_0<0.3 Å) absorbers conform to the field statistics. We argue that this dichotomy could be explained if cluster galaxies that give rise to weak Mg II absorption have their cold halos truncated as a consequence of environmental effects.

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