Characterisation of ISCS J1438+3414, a z=1.41 galaxy cluster free of X-ray selection bias

Details Characterisation of ISCS J1438+3414, a z=1.41 galaxy cluster free of X-ray selection bias Characterisation of ISCS J1438+3414, a z=1.41 galaxy cluster free of X-ray selection bias

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008cxo..prop.2662a&link_type=abstract

Chandra proposal ID #10800217

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Scientific paper

High-redshift galaxy clusters are scarce, with only a few systems known at z > 1, and the highest spectroscopically confirmed cluster scoring z=1.45. We ask a 150 ks observation in order to characterise the second most distant cluster of galaxy known thus far, ISCS J1438+3414, at z=1.41, that is also the most distant non-X-ray selected cluster. ISCS J1438+3414, optically-infrared selected, offers a unique opportunity to estimate X-ray scale relationships at z=1.4 free from the biases that affect X-ray selected cluster samples. We will investigate a key question of cluster studies and for the determination of cosmological parameters, namely whether the simple evolution of the cluster scaling relations predicted by the self-similar model is obeyed at z=1.4.

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