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The Large Scale Distribution of Radio Continuum in E and SO Galaxies

Published online by Cambridge University Press:  14 August 2015

R.D. Ekers
R.D. Ekers*
Affiliation:
Kapteyn Astronomical Institute, University of Groningen

Extract

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If we look at the radio properties of the nearby ellipticals we find a situation considerably different from that just described by van der Kruit for the spiral galaxies. For example NGC 5128 (Cen A), the nearest giant elliptical galaxy, is a thousand times more powerful a radio source than the brightest spiral galaxies and furthermore its radio emission comes from a multiple lobed radio structure which bears no resemblance to the optical light distribution (e.g. Ekers, 1975). The other radio emitting elliptical galaxies in our neighbourhood, NGC 1316 (Fornax A), IC 4296 (1333–33), have similar morphology. A question which then arises is whether at lower levels we can detect radio emission coming from the optical image of the elliptical galaxies and which may be more closely related to the kind of emission seen in the spiral galaxies.

Type
I: The Smooth Background
Information
Symposium - International Astronomical Union , Volume 77: Structure and Properties of Nearby Galaxies , 1978 , pp. 49 - 55
Copyright
Copyright © Reidel 1978 

References

van den Bergh, S. 1977, Observatory, 97, 81.Google Scholar
Ekers, R.D. and Ekers, J.A. 1973, Astron. Astrophys. 24, 247.Google Scholar
Ekers, R.D. 1975, in “Structure and Evolution of Galaxies”, ed. Setti, G., p. 217.Google Scholar
Ekers, R.D. 1976, in “The Physics of Non-Thermal Radio Sources”, ed. Setti, G., p. 83.Google Scholar