Weak lensing study of Abell 2029
Abstract
Abell 2029 is one of the most studied clusters due to its proximity (z=0.07), its strong X-ray brightness and its giant cD galaxy which is one of the biggest stellar aggregates we know. We present here the first weak lensing mass reconstruction of this cluster made from a deep I-band image of 28.5'x28.5' centered on the cluster cD galaxy. This preliminary result allows us already to show the shape similarities between the cD galaxy and the cluster itself, suggesting that they form actually a single structure. We find a lower estimate of the total mass of 1.8 10^14 h^-1 solar masses within a radius of 0.3 h^-1 Mpc. We finally compute the mass-to-cD-light ratio and its evolution as a function of scale.
Keywords
Cite
@article{arxiv.astro-ph/0209190,
title = {Weak lensing study of Abell 2029},
author = {Brice Menard and Thomas Erben and Yannick Mellier},
journal= {arXiv preprint arXiv:astro-ph/0209190},
year = {2007}
}
Comments
5 pages, to appear in the proceedings of "Matter and Energy in Clusters of Galaxies", ASP Conference Series