IUE spectra and a resulting model of Seyfert 2 galaxies

Details IUE spectra and a resulting model of Seyfert 2 galaxies IUE spectra and a resulting model of Seyfert 2 galaxies

Jan 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...300..658f&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 300, Jan. 15, 1986, p. 658-668.

Astronomy and Astrophysics

Astronomy

185

Iue, Seyfert Galaxies, Ultraviolet Astronomy, Chemical Composition, Continuous Spectra, Emission Spectra, H Lines, Lyman Spectra, Nonthermal Radiation, Photoionization, Ultraviolet Spectra, X Ray Spectra

Scientific paper

Nearly simultaneous optical and ultraviolet observations of several Seyfert 2 galaxies are presented. A mean optical to ultraviolet emission line spectrum for Seyfert 2 galaxies is determined, and these intensities are compared with predictions of photoionization models. The UV to X-ray nonthermal continuum which ionizes this gas is examined. The results suggest that an obscuring layer does not hide an underlying broad-line region, and that narrow-line objects such as Seyfert 2 and narrow-line radio galaxies are physically different from broad-line objects, at least in not having an inner broad-line region. The absence of extinction also distinguishes these classical Seyfert 2 galaxies from the narrow-line X-ray galaxies, which X-ray evidence suggests may be extinguished Seyfert 1 galaxies.

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