Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apjs...52..229k&link_type=abstract
Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 52, July 1983, p. 229-239.
Astronomy and Astrophysics
Astrophysics
217
Forbidden Transitions, Galactic Nuclei, H Alpha Line, Seyfert Galaxies, Spiral Galaxies, Brightness Temperature, Emission Spectra, H Ii Regions, Line Spectra, Nebulae, Nitrogen, Spectrophotometry, Spectrum Analysis
Scientific paper
New spectrophotometry of the nuclei of an optically complete sample of 93 spiral galaxies brighter than integrated magnitude brightness temperature of 12.0 is presented. All the nuclei exhibit emission lines. These are divided into those produced by stellar photoionization (H II regions) and low-ionization emission regions. In addition, five Seyfert nuclei occur in this sample, including one (NGC 4941) not previously identified. Relations between nuclear luminosity and emission-line luminosity, and between the character of the emission spectrum and line luminosity, are presented.
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