Key points are not available for this paper at this time.
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 BT_~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 31ᵈeg^ 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 BT_~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^-3^ brighter than MBT__ = - 12. 5. Dynamical analysis indicates that all of the groups are likely to be gravitationally bound.
Ferguson et al. (Sun,) studied this question.