X-ray Luminous Groups in the Process of Formation

Details X-ray Luminous Groups in the Process of Formation X-ray Luminous Groups in the Process of Formation

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005xmm..prop...44m&link_type=abstract

XMM-Newton Proposal ID #04011301

Mathematics

Logic

Groups Of Galaxies, Clusters Of Galaxies, Supercluster, Rxj0210.4-3929, Xmm-Newton Proposal 04011301

Scientific paper

We propose XMM-Newton observations of two X-ray luminous groups at intermediate redshifts that do not follow the morphological trends found for nearby X-ray groups. In particular, the X-ray emission in these systems is not centered on a dominant elliptical galaxy. Such systems are very rare in the nearby universe, suggesting significant evolution in the X-ray group population over the last 5 billion years. Groups without a central galaxy may be systems in the process of collapsing for the first time. Our deep XMM-Newton observations will allow us to test this idea by searching directly for substructure in the hot gas and looking for the departures expected from optical/X-ray scaling relations.

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