Iron features in the X-ray spectra of three Seyfert galaxies

Details Iron features in the X-ray spectra of three Seyfert galaxies Iron features in the X-ray spectra of three Seyfert galaxies

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.240..769p&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 240, Oct. 15, 1989, p. 769-783.

Astronomy and Astrophysics

Astronomy

82

Emission Spectra, Iron, K Lines, Line Spectra, Seyfert Galaxies, X Ray Spectra, Exosat Satellite, Fluorescence, Line Of Sight, X Ray Sources

Scientific paper

Ginga X-ray spectra are presented for three Seyfert type 1 galaxies, each showing evidence for a significant iron K-emission line. This line is interpreted as fluorescence from cold material, apparently lying close to the plane of the host galaxy, for NGC 5548 (near face-on) and NGC 3227 (about 60 deg inclination). The additional detection of a large iron K-absorption edge in NGC 5506 suggests that the fluorescent line arises, in this third case, from material in the line-of-sight to the hard X-ray source. Evidence for substantial ionization of the reprocessing material in NGC 5506 places constraints on its distance from the central source and, hence, on its density.

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