Calibrating the Galaxy Cluster Mass-Observable Relations at z=0.9

Details Calibrating the Galaxy Cluster Mass-Observable Relations at z=0.9 Calibrating the Galaxy Cluster Mass-Observable Relations at z=0.9

Oct 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009xmm..prop...65m&link_type=abstract

XMM-Newton Proposal ID #06517702

Mathematics

Logic

Groups Of Galaxies, Clusters Of Galaxies, Supercluster, Xlssc 003, Cl1216-1201

Scientific paper

We propose deep XMM observations (totalling 234ks) of three z>0.75 galaxy clusters to measure temperature profiles and hence precise hydrostatic masses, completing a sample of six. This sample will constrain the normalisation of the Yx-M scaling relation to 10% at z=0.9, and its evolution parameter to 12%. The Sunyaev-Zel'dovich effect mass estimators will also be calibrated with a similar precision (a first at these redshifts). We will also measure precise gas fractions (leading to improved cosmological constraints), and study the evolution of the metal abundance of the intra-cluster medium.

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