Scaling Relations of Distant comma SZ-confirmed XXL Galaxy Clusters

We propose to follow up four distant galaxy clusters discovered by the XMMLSSand XXL survey programs. In addition to being confirmed with optical and NIRspectroscopy or photometry, the presence of hot gas in each of these clustershas been confirmed through a significant detection of the SunyaevZel dovichsignal with CARMA. Three of our targets have redshifts greater than 1, with oneof them at 1.5. Deeper XMM data will allow us to situate these highredshiftclusters on Xray and SZ scaling relations and provide key mass proxies,enhancing the cosmological power of the XXL survey and enabling a variety ofstudies of cluster evolution. We also request joint Chandra observations inorder to constrain and remove pointsource contamination of the XMM signal for these faint clusters. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]