21 Centimeter Study of Spiral Galaxies in the Coma Supercluster. II. Evidence for Ongoing Gas Stripping in Five Cluster Galaxies
Abstract
High-sensitivity 21 cm observations of 73 galaxies in the Coma supercluster are presented. Seventeen new redshifts are reported. Three galaxies in A1367 and two in the Coma Cluster are found with remarkably asymmetrical H I spectra indicating uneven gas distribution in their disks. This unstable configuration is interpreted as being due to ongoing dynamical gas stripping taking place on time scales shorter than those required for differential rotation to redistribute the gas, i.e., a few times 10^8^ yr. This suggests that spiral galaxies are continuously supplied to the clusters from the surrounding supercluster.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- November 1989
- DOI:
- 10.1086/167985
- Bibcode:
- 1989ApJ...346...59G
- Keywords:
-
- Galactic Clusters;
- Galactic Radio Waves;
- Radio Astronomy;
- Spiral Galaxies;
- Galactic Rotation;
- H Lines;
- Hydrogen;
- Red Shift;
- Spectral Line Width;
- Astrophysics;
- GALAXIES: CLUSTERING;
- GALAXIES: REDSHIFTS;
- RADIO SOURCES: 21 CM RADIATION