The luminosity function of compact groups of galaxies

Details The luminosity function of compact groups of galaxies The luminosity function of compact groups of galaxies

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...380...30m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 380, Oct. 10, 1991, p. 30-38. Research supported by NSERC.

Mathematics

Logic

59

Compact Galaxies, Elliptical Galaxies, Interacting Galaxies, Luminosity, Virgo Galactic Cluster, Astronomical Catalogs, Galactic Structure

Scientific paper

An analysis of the luminosity function of 68 compact groups of galaxies cataloged by Hickson (1982) is presented. The luminosities of compact group galaxies are consistent with their being drawn from a Schechter luminosity function. Individual morphological-type luminosity functions are also determined. Both the total and morphological-type specific luminosity functions of compact group galaxies are significantly different from those of field, loose-group, and cluster galaxies. In particular, the luminosity function of HCG elliptical galaxies has a mean magnitude which is significantly brighter than the mean magnitude of Virgo cluster elliptical galaxies. The mean luminosity density of galaxies in compact groups is estimated. The obtained result is consistent with the conventional scenario in which compact groups merge to form elliptical galaxies on a relatively short time scale.

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