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For refcode 1994A&A...281..375F:
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Copyright by European Southern Observatory (ESO). Reproduced by permission
1994A&A...281..375F Structures of small-size radio galaxies in clusters L. Feretti and G. Giovannini Istituto di Radioastronomia del CNR, Via Irnerio 46, 140126 Bologna, Italy Dipartimento di Astronomia dell'Universita, Bologna, Via Zamboni 33, 140133 Bologna, Italy Received April 7, 1992; accepted June 9, 1993 Abstract. We present high resolution maps of a sample of radio galaxies belonging to Abell clusters, showing linear size <~ 20 kpc, i.e. completely embedded within the optical galaxy. These radio galaxies were unresolved or only slightly 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, is found in ~24% of the sources of the present sample. This percentage is higher than in a non-cluster sample, but lower than in a 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 members. Stripping of the hot interstellar medium is suggested to be present in these galaxies. Key words: galaxies: clustering - galaxies: ISM. - radio continuum: galaxies
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