Optical emission-line activity and radio continuum power in the nuclei of spiral galaxies

Details Optical emission-line activity and radio continuum power in the nuclei of spiral galaxies Optical emission-line activity and radio continuum power in the nuclei of spiral galaxies

Apr 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...176..175g&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 176, no. 1, April 1987, p. 175-179. Research supported by the Ministero della

Astronomy and Astrophysics

Astrophysics

5

Galactic Nuclei, Radio Galaxies, Spiral Galaxies, Visible Spectrum, Continuous Radiation, Emission Spectra, Interacting Galaxies, Line Spectra, Luminosity, Seyfert Galaxies

Scientific paper

The authors show that the ratio between the radio continuum emission of the central sources of spiral galaxies and their optical blue luminosity is related to optical signs of nuclear activity, such as the strengths of the Hα, [N II] λ6583, [S II] λ6717, 6731, [O I] λ6300 emission lines. Interestingly enough, LINER and Seyfert nuclear spectra appear to display stronger correlations than H II-region-like spectra. Furthermore, enhanced radio power per unit light is observed in the central sources of the most strongly interacting galaxies.

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