The complex X-ray spectrum of NGC 4507
Dipartimento di Fisica, Università degli Studi Roma Tre, via della Vasca Navale 84, 00146 Roma, Italy
2 Observatoire Astronomique, 11 rue de l'Université, 67000 Strasbourg, France
Corresponding author: G. Matt, firstname.lastname@example.org
Accepted: 5 March 2004
XMM-Newton and Chandra/HETG spectra of the Compton-thin ( cm-2) Seyfert 2 galaxy, NGC 4507, are analyzed and discussed. The main results are: a) the soft X-ray emission is rich in emission lines; an (at least) two-zone photoionization region is required to explain the large range of ionization states; b) the 6.4 keV iron line is likely emitted from Compton-thick matter, implying the presence of two circumnuclear cold regions, one Compton-thick (the emitter), one Compton-thin (the cold absorber); c) evidence of an Fe xxv absorption line is found in the Chandra/HETG spectrum. The column density of the ionized absorber is estimated to be a few cm-2.
Key words: galaxies: individual: NGC 4507 / galaxies: Seyfert / X-rays: galaxies
© ESO, 2004