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We continue the study of the first sample of shear-selected clusters (Wittmanet al. 2006) from the initial 8.6 square degrees of the Deep Lens Survey (DLS,Wittman et al. 2002); a sample with well-defined selection criteriacorresponding to the highest ranked shear peaks in the survey area. We aim tocharacterize the weak lensing selection by examining the sample's X-rayproperties. There are multiple X-ray clusters associated with nearly all theshear peaks: 14 X-ray clusters corresponding to seven DLS shear peaks. Anadditional three X-ray clusters cannot be definitively associated with shearpeaks, mainly due to large positional offsets between the X-ray centroid andthe shear peak. Here we report on the X-ray properties of the 17 X-rayclusters. The X-ray clusters display a wide range of luminosities andtemperatures; the Lx-Tx relation we determine for the shear-associated X-rayclusters is consistent with X-ray cluster samples selected without regard todynamical state, while it is inconsistent with self-similarity. For a subset ofthe sample, we measure X-ray masses using temperature as a proxy, and compareto weak lensing masses determined by the DLS team (Abate et al. 2009; Wittmanet al. 2014). The resulting mass comparison is consistent with equality. TheX-ray and weak lensing masses show considerable intrinsic scatter (~48%), whichis consistent with X-ray selected samples when their X-ray and weak lensingmasses are independently determined.

X-ray Temperatures, Luminosities, and Masses From XMM-Newton Follow-up of the First Shear-selected Galaxy Cluster Sample