XMM-Newton Proposal 03020807

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Groups Of Galaxies, Clusters Of Galaxies, Supercluster, 1Rxs J130419.2-, 1Rxs J130420.4-, Abell S721, Xmm-Newton Proposal 03020807

Scientific paper

In a survey of the Shapley super-cluster (SC) we have detected diffuse X-ray emission from 37 cluster candidates without previous X-ray detection. 23 were previously optically known SC members; the other candidates were never detected before in any waveband: 4 of them were confirmed clusters by follow-up multi-band optical imaging. We propose to observe a subsample of these clusters with XMM. This will enhance previous studies of the Shapley to significantly fainter X-ray limits. We will reanalyse the density and mass properties of the SC, which will be used in different collapse models to draw evolutionary scenarios of the super-structure. We will also study the properties of clusters which we will compare to those of clusters embedded in much lower density regions.

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