Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.263..687b&link_type=abstract
In ESA Proceedings of an International Symposium on New Insights in Astrophysics. Eight Years of UV Astronomy with IUE p 687-68
Astronomy and Astrophysics
Astrophysics
1
Active Galaxies, Galactic Radiation, Galaxies, Infrared Radiation, Ultraviolet Radiation, Continuums, Interstellar Matter, Seyfert Galaxies
Scientific paper
The overall continua of nine narrow line active galaxies are presented from the UV to the far IR. The nonstellar IR distribution is clearly not an extrapolation of the UV and optical spectra. The nonstellar components include a nonthermal power law continuum in the optical (steeper than typical values for Seyfert 1 objects), a thermal UV component, and 3 main dust components in the IR with typical temperatures of 40, 150, and 1000 K and dust masses of the 2 first components in the ranges 1.2 million to 14 million and 800 to 420 solar masses respectively. The existence of true narrow line objects differing from obscured broad line galaxies by the intrinsic faintness and steepness of their nonstellar continuum, as well as by the absence of a broad line region, is derived.
Boisson Catherine
Durret Florence
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