Cosmological Evolution of Metallicity SSC_43

GTClusters accumulate processed and primordial material within theatmospheres held in their deep potential wells. The variation ofmetal content with position in a single cluster is an indicator of thebalance between stellar processing and mass infall. The variation ofthe total metal content of clusters with redshift measures the stellarevolution history of the Universe as a whole, and can provide newcosmological data to test theories of structure formation. XMM isuniquely able to make powerful observations of cluster metallicities,and here we propose EPIC observations of a z 0.5 cluster to providehighquality metallicity measurements at a large lookback time. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]