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Compact Groups of Galaxies found using the COSMOS Catalogue

Published online by Cambridge University Press:  12 April 2016

D. G. Barnes  and
M. J. Drinkwater
D. G. Barnes
Affiliation:
Anglo-Australian Observatory, Coonabarabran, NSW 2357, Australia
M. J. Drinkwater
Affiliation:
Anglo-Australian Observatory, Coonabarabran, NSW 2357, Australia

Abstract

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We have developed an algorithm to search the COSMOS/UKST Southern Sky Object Catalogue for compact groups of galaxies, with the aim of finding regions of high mass-to-light ratio. With this catalogue, and quantitative criteria, we select groups objectively and therefore hope to improve upon earlier visual searches. We use a density enhancement measure to define a compact group.

We have made a preliminary search of 15 Schmidt fields (total area ∼ 390 deg2), finding 58 compact groups, ie. a mean density of 0.15 compact groups deg−2. In this paper we present finding charts and images of some of the compact groups found.

Type
XII. Cosmology
Information
International Astronomical Union Colloquium , Volume 148: The Future Utilisation of Schmidt Telescopes , 1995 , pp. 490 - 496
Copyright
Copyright © Astronomical Society of the Pacific 1995

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