The Mass Distrubution in the Most Distant Virialized Galaxy Cluster Known

Mathematics – Logic

Scientific paper

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Chandra Proposal Id #04800167

Scientific paper

We propose deep Chandra/ACIS-I and HST/ACS observations of the very distant, X-ray luminous cluster ClJ1415.1+3612 to measure its gas and dark matter distribution from X-ray and gravitational lensing data, and to conduct a multi-color morphological analysis of the cluster's galaxy population. At z=1.013 this exceptional system is the most distant, massive (kT>7 keV) cluster known. Evidence of strong lensing in the cluster core from ground-based imaging, the presence of emission lines characteristic of a cooling flow in the spectrum of the cD galaxy, and an undisturbed X-ray morphology in a ROSAT observation all suggest a virialized system. With only one comparable cluster currently known, ClJ1415.1+3612 is a prime target for cosmological and physical structure formation studies at z~1.

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