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Centro de Astrofísica da Universidade do Porto

A photometric catalogue of galaxies in the cluster Abell 85

E. Slezak, F. Durret, J. Guibert, C. Lobo

Abstract
We present two catalogues of galaxies in the direction of the rich cluster ABCG 85. The first one includes 4232 galaxies located in a region ± 1° from the cluster centre. It has been obtained from a list of more than 25000 galaxy candidates detected by scanning a Schmidt photographic plate taken in the BJ band. Positions are very accurate in this catalogue but magnitudes are not. This led us to perform CCD imaging observations in the V and R bands to calibrate these photographic magnitudes. A second catalogue (805 galaxies) gives a list of galaxies with CCD magnitudes in the V and R bands for a much smaller region in the centre of the cluster. These two catalogues will be combined with a redshift catalogue of 509 galaxies cite[(Durret et al. 1997)]{dur97} to investigate the cluster properties at optical wavelengths cite[(Durret et al., in preparation)]{dur97}, as a complement to our previous X-ray studies cite[(Pislar et al. 1997;]{pis97} cite[Lima-Neto et al. 1997)]{lim97}. Based on plates scanned with the MAMA microdensitometer at CAI, Paris and on observations collected at the European Southern Observatory, La Silla, Chile.

Astronomy and Astrophysics
Volume 128, Page 67
February 1998

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