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Tracing the Cluster Internal Dynamics with Member Galaxies

Andrea Biviano
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Abstract

The analysis of the spatial distribution and kinematics of galaxies in clusters allows one to determine the cluster internal dynamics. In this paper, I review the state of the art of this topic. In particular, I summarize what we have learned so far about galaxy orbits in clusters, and about the cluster mass distribution. I then compare four methods that have recently been used in the literature, by applying them to the same data-set. The results stress the importance of reducing systematic besides random errors, for a reliable determination of cluster mass profiles.

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Andrea Biviano. 2001-10-02. Tracing the Cluster Internal Dynamics with Member Galaxies. https://arxiv.org/abs/astro-ph/0110053

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