Virgo Clusters At Redshift 0.35: Probing the Cluster-Group Transition

Details Virgo Clusters At Redshift 0.35: Probing the Cluster-Group Transition Virgo Clusters At Redshift 0.35: Probing the Cluster-Group Transition

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008xmm..prop...89d&link_type=abstract

XMM-Newton Proposal ID #06035010

Mathematics

Logic

Groups Of Galaxies, Clusters Of Galaxies, Supercluster, Rxj0124.5+0400, Rxj0351.6-3649, Rxj0826.1+2625, Rxj1218.4+3011, Rxj1337.8+2638, Rxj1606.7+2329, Rxj1642.6+3935, Rxj1659.7+3410, Rxj2059.9-4245, Rxj2139.9-4305

Scientific paper

The cluster X-ray luminosity-temperature (L-T) relationship is sensitive to cooling and feedback processes. Because L and T are used as surrogates for the cluster virial mass M in cosmological studies, understanding the L-T and the L-T-M relations-including scatter and its evolution, is critical for cluster constraints on cosmological models, as well as models of galaxy and cluster evolution. We propose to measure Tx and Lx for a representative sample of 13 low-luminosity, low-T (2-2.6 keV) clusters of galaxies at moderate redshift (z=0.32-0.37), from the ROSAT 160SD survey. We also will study the L-T-M relation for 6 clusters with weak lensing masses obtained with HST. This sample spans the mass range between rich clusters and groups, where feedback processes become important.

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