Comparison of weak gravitational lensing to x-ray beta models in three nearby clusters

We present weak lensing mass map reconstructions of three nearby ( zcd < 0.06) clusters in various stages of merging: Abell 3266, Abell 3667, and Abell 3158. The weak lensing shear in all clusters was well fit by a Navarro, Frenk, and White profile [Navarro et al. (1997)]. Additionally, we used the lensing shear to predict the rc and beta values of a beta model fit to the X-ray intensity under assumptions of isothermality and hydrostatic equilibrium. The most relaxed cluster, Abell 3158, reproduces these values found in X-ray analysis of the cluster, while the merging clusters' parameters are farther from those found through X-ray analysis. We find total cluster masses in agreement with vith X-ray estimates and slightly lower than virial mass estimates. Substructure in the reconstruction is also measured quantitatively in all clusters, showing strong differences between the merging clusters and the relaxed cluster. These clusters form the first three results from an X-ray luminosity-selected weak lensing survey of 19 low-redshift (zcl < 0.1) southern clusters.