Doctor of Philosophy (PhD)
First Committee Member
Number of Pages
We present a comparison of the photometric quantities of rich galaxy clusters to their X-ray metallicity (Z). The intra-cluster medium (ICM) is enriched with more metals than expected for a primordial gas. The most plausible source of the metals are the constituent galaxies, in particular, supernovae winds from those galaxies. In an effort to probe the Z variations, we studied photometric quantities of a sample of galaxy clusters. White (2000) and Horner (2001) present X-ray data for large samples of clusters, including their metallicity. We analyzed photometric data for a sample of 35 clusters chosen from their list. Here, we present luminosity functions for those clusters with a metallicity range of 0.00 to 0.42 Z⊙ . There is a possible decrease in r band characteristic magnitude ( M*r ), of the luminosity functions for the clusters, as their metallicity increases. This result favors the hypothesis of ICM enrichment due to supernovae winds.
Clusters; Functions; Galaxy; Galaxy Clusters; Luminosity; Metallicities; Ray
University of Nevada, Las Vegas
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Thanki, Sandip, "X-ray metallicities and luminosity functions of galaxy clusters" (2004). UNLV Retrospective Theses & Dissertations. 2601.