Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...106..183h&link_type=abstract
Astronomy and Astrophysics, vol. 106, no. 2, Feb. 1982, p. 183-189. Research supported by the Nederlandse Organisatie voor Zuiv
Astronomy and Astrophysics
Astronomy
54
Galactic Structure, Radio Astronomy, Radio Sources (Astronomy), Radio Spectra, Spectrum Analysis, Spiral Galaxies, Elliptical Galaxies, Galactic Rotation, Luminous Intensity, Radio Telescopes, Spectral Energy Distribution
Scientific paper
Attention is given to a large sample of SO galaxies observed with the Westerbork Synthesis Radio Telescope at 1415 MHz. The radio continuum properties of the sample are analyzed and a comparison is made with those of E and S galaxies. The central sources in SO galaxies are found to be weaker by a factor of at least 10 than those in E and early type S galaxies and a factor 3 weaker than the central sources in S galaxies in general. The detection rate for double radio sources in SO galaxies is found to be lower than the detection rate for similar sources in E galaxies. It is suggested that the absence of a strong radio disk component and of a steep spectrum central source is due to the low gas content and that the radio power of a flat spectrum nuclear source is related to the mass and rotation of the bulge component.
Hummel Evi
Kotanyi C. G.
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