Measuring the Mass Distribution in the Most Distant, Very X-Ray Luminous Galaxy Cluster Known

Details Measuring the Mass Distribution in the Most Distant, Very X-Ray Luminous Galaxy Cluster Known Measuring the Mass Distribution in the Most Distant, Very X-Ray Luminous Galaxy Cluster Known

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cxo..prop..969e&link_type=abstract

Chandra Proposal ID #03800004

Mathematics

Logic

Chandra Proposal Id #03800004

Scientific paper

We propose to obtain a mosaic of deep HST/WFPC2 images to conduct a weak lensing analysis of the mass distribution in the massive, distant galaxy cluster ClJ1226.9+3332, recently discovered by us. At z=0.888 this exceptional system is more X-ray luminous and more distant than both MS1054.4-0321 and ClJ0152.7-1357, the previous record holders, thus providing yet greater leverage for cosmological studies of cluster evolution. ClJ1226.9+3332 differs markedly from all other currently known distant clusters in that it exhibits little substructure and may even host a cooling flow, suggesting that it could be the first cluster to be discovered at high redshift that is virialized. We propose joint HST and Chandra observations to investigate the dynamical state of this extreme object.

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