The complex iron line of NGC 5506

Details The complex iron line of NGC 5506 The complex iron line of NGC 5506

2001-08-31

arxiv.org/abs/astro-ph/0108508v1

Astronomy and Astrophysics

Astrophysics

accepted for publication in A&A Letters

Scientific paper

10.1051/0004-6361:20011209

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.

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