Large Scale Structure

The Great Wall and the Perseus-Pisces chain are not simply connected across the Zone of Avoidance. These structures, which at first appear to be coherent on scales of ~100h^-1^Mpc or more, actually form the boundaries of neighboring voids of considerably smaller scale, approximately 50h^-1^Mpc. The structures delineated by our optically-selected sample are qualitatively similar to those detected by the far-infrared-selected IRAS 1.2 Jansky Survey (Fisher et al., 1995ApJS..100...69F).

Although the IRAS survey probes more deeply into the Zone of Avoidance, our optically-selected survey provides better sampling of structures at b_(II)>=10deg. (Copyright) 1996 American Astronomical Society.