Four Irregular Galaxy Clusters with Multiple Gas Condensations

We propose XMMNewton observations of four dynamically young clusters with noongoing major mergers that can be divided into two classes: those with cDgalaxies (A1314 and A1589), and those without (A76 and A1913). The proposedobservations can map the Xray emission of the four clusters 10 times betterthan ROSAT, detect gas condensations (with or without associated galaxies),make temperature maps and determine abundance distributions. With these results,we can better understand the formation of central Xray halos and their impacton the evolution of young clusters, the distribution of dark matter halos inyoung clusters, minor mergers, Xray emission from galaxies in clusters, cluster galaxy interactions and at least for A1314, the radio ICM interaction. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]