Structures of small-size radio galaxies in clusters

Details Structures of small-size radio galaxies in clusters Structures of small-size radio galaxies in clusters

Jan 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...281..375f&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 281, no. 2, p. 375-387

Astronomy and Astrophysics

Astronomy

9

Astronomical Maps, Galactic Clusters, Galactic Structure, Interstellar Matter, Radio Astronomy, Radio Galaxies, Continuums, Infrared Astronomy, Radio Telescopes, Star Formation, Very Large Array (Vla)

Scientific paper

We present high resolution maps of a sample of radio galaxies belonging to Abell clusters, showing linear size less than or approximately 20 kpc, i.e. completely embedded within the optical galaxy. These radio galaxies were unresolved or only sligtly resolved in previous interferometric observations. Most of the sources are resolved at the present resolution. Radio maps of all the resolved sources are given. The correlation of the linear size versus the total radio power at 1.4 GHz is derived for radio galaxies belonging to clusters and is compared with the results found in a non-cluster sample. The size of cluster sources is slightly smaller on average than that of non-cluster ones, but the difference is not statistically significant. The tailed structure, typical of cluster radio galaxies of large size, found in approximately 24% of the sources of the present sample. This percentage is higher than in a non-cluster sample, but lower than ina cluster sample of radio galaxies with larger size. Tailed radio galaxies are mostly located at the cluster centers, the smallest ones being identified with the brightest cluster member. Stripping of the hot interstellar medium is suggested to be present in these galaxies.

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