AAS 203rd Meeting, January 2004
Session 47 Galaxy Clusters and Large-Scale Structure
Poster, Tuesday, January 6, 2004, 9:20am-6:30pm, Grand Hall

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[47.03] Optical and X-ray Mass Estimates for Abell S1063

P. L. Gomez (Gemini Observatory), A. K. Romer, K. Sabirli, J. Peterson (Carnegie Mellon University)

We will compare the mass estimates for Abell S1063 (z=0.27) derived from the analysis of optical and X-ray data. We have used the Gemini GMOS-S instrument to measure the redshift of 20 cluster members and of 2 gravitational arcs. These data have allowed us to estimate the inner cluster mass by using the strong lensing of the background galaxies and the virial mass from the velocity dispersion of the cluster members. In addition, this cluster has also been observed by XMM-Newton. This observation has been used to derive a global temperature for the cluster and estimate its mass. In this poster, we will compare these three mass estimates (i.e., masses derived from the X-ray, strong lensing, and velocity dispersion data).

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Bulletin of the American Astronomical Society, 35#5
© 2003. The American Astronomical Soceity.