Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002assl..272..163f&link_type=abstract
Merging Processes in Galaxy Clusters. Edited by L. Feretti, I.M. Gioia, G. Giovannini. Astrophysics and Space Science Library, V
Astronomy and Astrophysics
Astrophysics
5
Scientific paper
In this paper we review the properties of radio galaxies in connection to the effect of the dynamic gaseous environment inside clusters in which they are embedded. The external gas can interact with a radio source in different ways: modifying its morphology via ram-pressure, confining the radio lobes, possibly feeding the active nucleus, enhancing star formation, exerting stripping effects on the galaxy's gaseous component. We present the different classes of radio galaxy structures, and provide evidence that the presence of the intracluster gas and of cluster/ subcluster mergers play an important role in their formation and evolution. The statistical characteristics of radio galaxies are described, and shown to be surprisingly similar for sources both in and outside of rich clusters. The effect of the environment on starburst emission and gas stripping is also described and results on late type galaxies, richer in gas content than ellipticals, are presented.
Feretti Luigina
Venturi Tiziana
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