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Session 106 - Clusters of Galaxies.
Display session, Saturday, January 10
Exhibit Hall,

[106.01] Clusters of galaxies in the HST Medium Deep Survey database

K. U. Ratnatunga, E. J. Ostrander, R. E. Griffiths, R. C. Nichol (CMU)

Quantitative morphological and structural parameters estimated for galaxies detected in the HST WFPC2 observations are now available on a set of CDROMS and is searchable via a web-interface at http://archive.stsci.edu/mds/ . A modeling approach based on maximum likelihood is used for the 2-dimensional Disk + Bulge decomposition of the faint undersampled galaxy images. We present a new objectively selected sample of galaxy overdensites found using the MDS database. These galaxy clusters represent some of the most distant systems ever detected and will facilitate more detailed studies of cluster and galaxy evolution.

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Program listing for Saturday