DISTRIBUTION OF GALAXIES AROUND ABELL-262 AND THE NGC-383 AND NGC-507 GROUPS

We present 167 new redshifts of galaxies in the region around Abell 262, NGC 383, and NGC 507, which is situated within the filamentary main ridge of the Perseus-Pisces Supercluster. We investigate the dynamics of galaxies in this region by examining their distribution in spatial and velocity space. Clusters in the ridge appear to have substructure: the N507 group has a very small-scale substructure near its central core, and the N383 group shows the strongest evidence for substructures; it is basically composed of a few compact groups. Clusters in this region are perhaps still in an early evolutionary stage, accreting neighboring smaller groups and galaxies in the supercluster.