Astronomy and Astrophysics – Astrophysics
Scientific paper
1997-12-15
Astronomy and Astrophysics
Astrophysics
9 pages, 5 ps figures, accepted by Astronomy & Astrophysics main journal
Scientific paper
We report on the first spectrum up to 10 keV of the bright narrow-line Seyfert 1 galaxy Ton S 180, obtained with the imaging instruments onboard BeppoSAX. This is the first observed source in a sample of a dozen narrow-line Seyfert 1 galaxies in the BeppoSAX Core Program. We also present and discuss a high quality optical spectrum taken at the 1.5 m telescope at La Silla two months before the BeppoSAX observation. The X-ray spectrum shows a clear hardening above about 2 keV, where a power law with Gamma = 2.3 plus an iron line provide a good description of the data. This slope is significantly steeper than the typical one for classical Seyfert 1's and quasars. The best fit line energy is suggestive of highly ionized iron, which would support the idea that the high accretion rate is (one of) the fundamental parameter(s) characterizing the Narrow Line Seyfert 1 phenomenon.
Brandt Wiliam N.
Comastri Andrea
Fiore Fabrizio
Guainazzi Matteo
Leighly Karen M.
No associations
LandOfFree
BeppoSAX observations of Narrow-Line Seyfert 1 galaxies:I. Ton S 180 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with BeppoSAX observations of Narrow-Line Seyfert 1 galaxies:I. Ton S 180, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and BeppoSAX observations of Narrow-Line Seyfert 1 galaxies:I. Ton S 180 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-78261