Galaxy Clusters and Groups in ESO Fields 052, 151, 252, 341

Abstract

The observational basis for this study was The Galaxy Catalogue of the Münster Red Sky Survey. The positions of about 63000 galaxies brighter than 19.3m (catalogue photometric system)in four 5°×5° fields were studied. The analysis employed the Voronoi tessellation method for the galaxy cluster search. Areas exhibiting increased concentrations of galaxies were interpreted as galaxy clusters and groups. We obtained both shape of each galaxy cluster and list of galaxies in cluster field. Our results were compared with the galaxy clusters of the ACO and APM catalogs, as well as with the new PF catalog of galaxy clusters and groups. Areas exhibiting below-average concentrations of galaxies were interpreted as possible voids.