The broad line region of narrow-line Seyfert 1 galaxies

Details The broad line region of narrow-line Seyfert 1 galaxies The broad line region of narrow-line Seyfert 1 galaxies

1997-06-13

arxiv.org/abs/astro-ph/9706127v1

Astronomy and Astrophysics

Astrophysics

Accepted for publication in Astron. Astrophys. Main Journal, 10 pages, LaTeX with epsf and l-aa macros, including 2 postscript

Scientific paper

We have analyzed new and archival IUE observations of narrow-line Seyfert 1 galaxies (NLS1) in order to revise the ultraviolet (UV) properties of this sub-group of Active Galactic Nuclei (AGN). We have found broad wings in the strongest UV emission lines, ruling out the hypothesis that there is no broad line emission region in this type of objects. Since the similarities in spectral energy distributions from the far-infrared (FIR) to the soft X rays in both narrow-line and broad-line Seyfert 1 galaxies do not suggest that the nuclei of NLS1 are hidden from a direct view, we discuss the possibility that the line emitting material in NLS1 is optically thin.

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