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A Radio Continuum Survey of Southern E and SO Galaxies at 2.7 GHz and 5.0 GHz

Published online by Cambridge University Press:  25 April 2016

E. M. Sadler
E. M. Sadler*
Affiliation:
Mount Stromlo and Siding Spring Observatories, ANU
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Extract

The reason why some early-type galaxies contain powerful radio sources is not yet well understood, but it is often suggested that an external factor such as interaction with a neighbouring galaxy may be involved in triggering a radio source (Gisler 1976, Dressel 1981, Hummel 1981b). Radio emission may be enhanced in galaxies which have a close companion for several reasons, such as a gravitational perturbation or the possibility of gas accreted from the companion fuelling a central source. The latter effect might be expected to be more pronounced in elliptical galaxies, which are generally gas-poor (Faber and Gallagher 1976).

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Contributions
Information
Publications of the Astronomical Society of Australia , Volume 4 , Issue 4 , 1982 , pp. 454 - 456
Copyright
Copyright © Astronomical Society of Australia 1982

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