Supercluster bridge between groups of galaxy clusters
Abstract
From a complete population of 350 galaxies having photographic magnitudes not greater than 15.7, in a 332 sq deg region between the Hercules group of clusters and the A2199/A2197 group, redshifts were determined for a randomly selected sample of 44 galaxies. A plot of redshift versus declination shows a bridge of galaxies connecting the two groups, which contains 33 of the 44 galaxies sampled. The redshifts vary smoothly along the bridge by 2000 km/sec from the Hercules to the A2199/A2197 region, and the groups are separated by 44/h Mpc. The bridge is tilted 27 deg off the plane of the sky and, apart from two sparsely populated associations of galaxies with dimensions greater than about 15 Mpc, the foreground volume is devoid of galaxies.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- October 1981
- DOI:
- 10.1086/183656
- Bibcode:
- 1981ApJ...249L..47C
- Keywords:
-
- Astronomical Photography;
- Galactic Clusters;
- Galactic Structure;
- Red Shift;
- Astronomical Catalogs;
- Bridges;
- Groups;
- Luminous Intensity;
- Populations;
- Random Sampling;
- Spatial Distribution;
- Astronomy