RADIO SOURCES AND ELLIPTICAL GALAXIES.
Abstract
One hundred ninety-one E and SO non-cluster galaxies with known redshift have been surveyed for radio emission at a frequency of 2640 MHz. The observations support the hypothesis that an elliptical galaxy must have an absolute photographic magnitude brighter than -20 to be a strong radio source. A comparison of the results of this survey with observations of radio galaxies in rich clusters indicates that cluster membership does not enhance the probability of an elliptical galaxy being a radio emitter. In addition to the strong radio sources, several E and SO galaxies were found to have weaker radio emission associated with them, but their absolute radio luminosity was still on the order of 100 times larger than that for detected spiral galaxies. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1968
- Accession Number
- AD0679650
Entities
People
- David H. Rogstad
- Ronald D. Ekers
Organizations
- California Institute of Technology