Weak lensing study of Abell 2029

Details Weak lensing study of Abell 2029 Weak lensing study of Abell 2029

2002-09-10

arxiv.org/abs/astro-ph/0209190v1

Astronomy and Astrophysics

Astrophysics

5 pages, to appear in the proceedings of "Matter and Energy in Clusters of Galaxies", ASP Conference Series

Scientific paper

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.

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