SIMBAD references

Spatial coincidences have been detected between Hickson compact groups and 36 loose groups and seven Abell clusters. The coincidences were found from examination of (a) prints of the Palomar Sky Survey, (b) galaxy redshift information in the de Vaucouleurs et al. (1992) Third Reference Catalog of Bright Galaxies, (c) locational information for loose groups in recent catalogs by Fouque et al. (1992), Nolthenius (1993), Garcia (1993) and (d) locational information for Abell clusters. Seven-tenths (0.7) of the Hickson compact groups with redshift z </- 0.02 are located within loose groups.