A&A 387, 76-81 (2002)
DOI: 10.1051/0004-6361:20020372

Ionized iron K lines in AGN X-ray spectra

S. Bianchi and G. Matt

Dipartimento di Fisica, Università degli Studi Roma Tre, Via della Vasca Navale 84, 00146 Roma, Italy

(Received 15 January 2002 / Accepted 8 March 2002 )

Abstract
The Equivalent Widths ( EW) of the He- and H-like iron lines produced in photoionized, circumnuclear matter of AGN are calculated with respect to both the reflected and the total continua. We found that the EWs with respect to the total continuum may be as large as a few tens of eV, making them observable in bright Seyfert 1s by instruments on board Chandra and XMM- Newton. We apply our calculations to the XMM- Newton spectrum of NGC 5506 and found a good agreement with the data at the expense of a modest iron overabundance.

Key words: line: formation -- galaxies: individual: NGC 5506 -- galaxies: Seyfert -- X-rays: galaxies

Offprint request: S. Bianchi, bianchi@fis.uniroma3.it

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