Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...269..438m&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 269, June 15, 1983, p. 438, 439.
Astronomy and Astrophysics
Astrophysics
9
Astronomical Spectroscopy, Galactic Nuclei, Galactic Structure, Seyfert Galaxies, Astronomical Photography, Luminosity
Scientific paper
Weedman's (1977) suggestion of a spectroscopic definition for Seyfert galaxies is followed in order to present a simple four-box classification of the forms of N galaxies. The complete types for these galaxies must include a spectroscopic parameter that would show which of the Ns are also Seyferts and the type of the Seyfert spectra in each case.
Dreiser R. D.
Morgan William W.
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