The complex iron line of NGC 5506
Abstract
The bright Narrow Emission Line Galaxy, NGC 5506, has been observed simultaneously by XMM-Newton and BeppoSAX. The iron line is complex, with at least two components: one narrow and corresponding to neutral iron, the second one broad and corresponding to ionized iron. The latter line is equally well fitted by a truly broad line or by a blend of He- and H-like narrow lines. The bulk of the Compton reflection continuum originates in neutral matter, and is therefore associated with the narrow line: they are most likely emitted in distant matter. The origin of the ionized line(s) is less certain, but the solution in terms of a blend of narrow lines from photoionized matter seems to be preferable to emission from an ionized, relativistic accretion disc.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- October 2001
- DOI:
- 10.1051/0004-6361:20011209
- arXiv:
- arXiv:astro-ph/0108508
- Bibcode:
- 2001A&A...377L..31M
- Keywords:
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- GALAXIES: INDIVIDUAL: NGC 5506;
- GALAXIES: SEYFERT;
- X-RAYS: GALAXIES;
- Astrophysics
- E-Print:
- accepted for publication in A&