Fossil Groups in the Local Universe

Details Fossil Groups in the Local Universe Fossil Groups in the Local Universe

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cxo..prop..994p&link_type=abstract

Chandra Proposal ID #03800488

Physics

Chandra Proposal Id #03800488

Scientific paper

Fossil groups are believed to be rare examples of galaxy systems which collapsed at an early epoch, but have not yet been incorporated into clusters. If this idea is correct, then they offer us a direct view of the first generation of galaxy groups, undisturbed by subsequent merging. A direct test of this idea is available from the shape of their dark matter distribution, which should be strongly peaked. We have located the closest fossil groups in the Universe, and propose to image them at high resolution with ACIS-S, in order to map the core of the potential, and to study the cooling and metallicity of some of the least disturbed gas in existence.

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