Population studies in groups and clusters of galaxies. III - A catalog of galaxies in five nearby groups

Details Population studies in groups and clusters of galaxies. III - A catalog of galaxies in five nearby groups Population studies in groups and clusters of galaxies. III - A catalog of galaxies in five nearby groups

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990aj....100....1f&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 100, July 1990, p. 1-31.

Astronomy and Astrophysics

Astronomy

132

Astronomical Catalogs, Astronomical Photography, Galactic Clusters, Radial Velocity, Space Density, Tables (Data), Velocity Distribution

Scientific paper

Five nearby groups of galaxies have been surveyed using large-scale plates from the 2.5 m duPont Telescope at Las Campanas Observatory. Catalogs of galaxies brighter than B(T) = 20 are presented for the Leo, Dorado, NGC 1400, NGC 5044, and Antlia groups. A total of 1044 galaxies are included, from visual inspection of 14 plates, covering 31 deg square. Galaxies have been classified in the extended Hubble system, and group memberships have been assigned based on velocity (where available) and morphology. About half the galaxies listed are likely members of one of the nearby groups. The catalogs are complete to B(T) = 18, although the completeness limits vary slightly from group to group. Based on King model fits to the surface density profiles, the core radii of the groups range from 0.3 to 1 Mpc, and central densities range from 120 to 1900 galaxies Mpc exp-3 brighter than M(BT) = -12.5. Dynamical analysis indicates that all of the groups are likely to be gravitationally bound.

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