A photometric catalogue of the Coma cluster core

Abstract

We have obtained a mosaic of CCD images of the Coma cluster in the V-band covering a region of approximately 0.4 degrees${}^2$ around both central cluster galaxies NGC 4889 and NGC 4874. An additional frame of $\sim$ 90 arcmin${}^2$ was taken of the south-west region around NGC 4839. We derived a catalogue of 7023 galaxies and 4096 stars containing positions, central surface brightnesses and isophotal V${}_{26.5}$ magnitudes. We estimate that data is complete up to V ${}_{26.5}\sim$ 22.5 and the surface brightness limiting detection value is $\hat{I}¼$ $\sim$ 24 mag/arcsec${}^2$. In this paper we present the catalogue (available in electronic form alone), along with a detailed description of the steps concerning the data reduction and quality of the computed parameters.

Accepted on August 2 for publication in A&AS, 6 pages, latex and postscript figures