A combined X-ray and SZ study of the ICM in the low mass cluster XLSSC 006

We propose a deep observation of the z0.43, T5 keV galaxy cluster XLSSC 006.Its Sunyaev Zel.dovich (SZ) signature was detected with high signal to noise at150 GHz by the APEXSZ instrument. This makes XLSSC 006 the coolest cluster everdetected in SZ. Combining our well resolved SZ map with a high sensitivity XMMobservation will permit to derive for the first time the gas temperature profilefrom a deprojection of the SZ and Xray surface brightness out to at least0.8xr500. This will further enable us to estimate the average temperature of theRzCS 059, a red sequence selected cluster at z0.9 and add two interestingpoints in the scaling relations for low mass systems. Possible other Xraydetections could also be correlated to less significant SZ decrements visible in the field. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]