Westerbork observations of 37 poor clusters of galaxies at 1415 MHz

Details Westerbork observations of 37 poor clusters of galaxies at 1415 MHz Westerbork observations of 37 poor clusters of galaxies at 1415 MHz

Apr 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...133..192h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 133, no. 1, April 1984, p. 192-204.

Astronomy and Astrophysics

Astrophysics

6

Galactic Clusters, Radio Galaxies, Data Reduction, Galactic Nuclei, Galactic Structure, Tables (Data)

Scientific paper

Of the poor cluster fields observed, 204 radio sources with 1415 MHz flux densities greater than 10 mJy are detected. Only 14 of these, however, can be identified with galaxies that are poor cluster members. Half of the poor cluster radio sources are associated with galaxies that have close companions, in some cases, these appear disrupted as a result of the encounter with the companion. The detection rate for galaxies with close companions (all spirals and lenticulars in this sample) is approximately five times greater than that for galaxies without close compansions; this is seen as indicating that a close encounter may actually trigger radio activity. The morphologies of the identified poor cluster radio sources are not found to be unusual. Ten are unresolved and are thought to be confined to the nucleus of the associated galaxy; two are elongated at the same position angle as the associated galaxy and are attributed to low-level disk emission; one is double; and one is a head-tail.

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