Redshifts and Photometry for 5 clusters at Z ~ 0.3

Details Redshifts and Photometry for 5 clusters at Z ~ 0.3 Redshifts and Photometry for 5 clusters at Z ~ 0.3

May 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aas...182.7805w&link_type=abstract

American Astronomical Society, 182nd AAS Meeting, #78.05; Bulletin of the American Astronomical Society, Vol. 25, p.930

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We present results from a study of 5 medium redshift clusters at z ~ 0.3 CL0500, CL0513, CL0017, CL0323, CL0231. The spectra were gathered from the ESO 3.6 meter, and the photometry from several other ground based telescopes. Two of the clusters (CL0500 and CL0017) each contain a large gravitational arc. A redshift for the arc in CL0500 has tenatively been measured by Giraud (1992 preprint). The number of measured redshifts in 4 of the clusters allow us to obtain confident M/L ratios. In particular, we find the clusters containing the arcs to be rich and very compact, as one would expect in a lensing configuration. A brief discussion of the fraction of blue members, as defined by Butcher & Oemler (1978,ApJ 219,18), that were found in each cluster,will also be presented. This work was supported by a grant from FONDECYT #1930570.

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