Compact radio components in SBC galaxies

Astronomy and Astrophysics – Astronomy

Scientific paper

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Compact Galaxies, Radio Sources (Astronomy), Radio Spectra, Spiral Galaxies, Active Galactic Nuclei, Interstellar Magnetic Fields, Radio Emission, Seyfert Galaxies, Very Large Array (Vla)

Scientific paper

Data are presented for 19 Sbc galaxies mapped with the VLA at 20 and 6 cm and a resolution of 1-2 arcsec, and a further nine galaxies detected only at 20 cm. Those with a central radio flux density greater than 5 mJy were selected from previous observations of a sample of 100 Sbc galaxies. Although most are dominated by a compact nuclear component, six show evidence of extended emission with compact features, reminiscent of starburst galaxies. Comparison of the total energies and magnetic field strengths of the compact components with those seen in a sample of Seyfert galaxies show that the distributions are similar.

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