The composite UV emission spectrum of Seyfert 1 galaxies

Details The composite UV emission spectrum of Seyfert 1 galaxies The composite UV emission spectrum of Seyfert 1 galaxies

Mar 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...119...69v&link_type=abstract

Astronomy and Astrophysics, vol. 119, no. 1, Mar. 1983, p. 69-74.

Astronomy and Astrophysics

Astrophysics

33

Emission Spectra, Galactic Nuclei, Luminosity, Quasars, Seyfert Galaxies, Ultraviolet Spectra, Atomic Spectra, Fine Structure, Galactic Radiation, Iron, Iue, Radio Spectra, Spectral Energy Distribution, Spectral Line Width, Spectrum Analysis

Scientific paper

A composite spectrum is built in the wavelength range λλ1200-3000 Å, from IUE spectra of 27 Seyfert 1 nuclei. Comparisons with spectra of quasars show that all emission features seen in quasars, including the Fe II UV multiplets, are also observed in the much less luminous Seyfert 1 nuclei. This is taken as a confirmation that Seyfert 1 nuclei are low luminosity radio quiet or flat radio spectrum quasars. The C IV λ1550 equivalent width does not exceed ≡110 Å in the faintest Seyfert 1 nuclei; this is much less than the extrapolation of the suggested correlation between C IV EW and intrinsic luminosity would predict.

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