The use of radio source morphology in detecting clusters of galaxies associated with QSOs.
Abstract
It is suggested that in the search for clusters of galaxies associated with QSOs, the most promising objects for study are those possessing extended double (or triple) radio components which display central source displacements, the 'C' or 'S' distortion, or both. Radio maps of four distorted 3C sources are examined in light of this suggestion. The QSOs 3C 47, 3C 323.1, and 3C 351, as well as the BSO 3C 61.1, are found to have radio morphologies indicative of cluster membership. The results are taken to indicate that distortions in the radio morphologies of QSOs can be caused by the intracluster medium in clusters of galaxies associated with the QSOs. It is concluded that observations of the associated cluster galaxies would allow study of galaxy evolution, cluster X-ray source evolution, and, possibly, an accurate determination of the deceleration parameter.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- September 1978
- DOI:
- 10.1086/182756
- Bibcode:
- 1978ApJ...224L..47H
- Keywords:
-
- Galactic Clusters;
- Galactic Radiation;
- Morphology;
- Quasars;
- Radio Astronomy;
- Astronomical Photography;
- Cosmology;
- Photographic Plates;
- Red Shift;
- Astrophysics;
- Clusters of Galaxies:Quasars