Measuring the Mass Distribution in zvirgul0.2 Cluster Lenses with XMM comma HST and CFHT

We propose moderately deep XMM EPIC observations of an Xray luminosity limitedsample of zvirgul0.2 clusterlenses for a comprehensive study of the mass distribution in clusters. HST/WFPC2 and CFHT/12K observations awarded to us for mostof these clusters will allow us to determine accurately the lensing massdistribution using both strong and weak lensing. The proposed XMM observationsof this unique sample will enable us to measure in detail the gas and temperature distribution, from which the total baryonic mass can be determined. We willthus:1)precisely constrain the mass distribution of zvirgul0.2 clusters,2)test predictions of a universal mass profile and the importance of substructure,3) calibrate the cosmologically important MT and LT relations for nearby clusters. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]