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Systematic properties of compact groups of galaxies [ Erratum: 1982ApJ...259..930H ]
Hickson, P.
AA(British Columbia, University, Vancouver, Canada)
Astrophysical Journal, Part 1, vol. 255, Apr. 15, 1982, p. 382-391. Research supported by the Natural Sciences and Engineering Research Council of Canada. (ApJ Homepage)
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NASA/STI Keywords:
Galactic Clusters, Galactic Structure, Galaxies, Luminosity, Brightness Distribution, Dynamic Response, Spiral Galaxies, Statistical Analysis
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An analysis of estimated galaxy magnitudes, morphology, and group angular size for the case of 100 compact groups of galaxies indicates that (1) there is no correlation between group density and magnitude difference between first- and second-ranked galaxies, (2) there is no preferred morphological type for the first-ranked galaxies, many of which are spiral, (3) the groups contain fewer spirals than a comparable sample of field galaxies, and (4) there seems to be a deficiency of faint galaxies, in comparison with rich cluster and field galaxies. This apparent deficiency is greater in groups with elliptical, first-ranked galaxies. Implications of the above results are discussed from the viewpoint of dynamical evolution.

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