Dark Matter Distribution of Four Low-z Clusters of Galaxies

Abstract

We present here the weak gravitational lensing detection of four nearby galaxy clusters in the southern sky: A2029, A85, A1606, and A2457. The weak lensing detections of A1606 and A2457 are the first in the literature. This work capitalizes on the wide field of view of the Dark Energy Camera at the Cerro Tololo Inter-American Observatory, which we use to obtain deep, multiwavelength imaging of all targets. We publish maps of the clusters’ projected mass distributions and obtain the M 200 of their clusters through Navarro–Frenk–White profile fits to the 2D tangential ellipticity signal.