NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-22 T06:26:47 PDT
Help | Comment | NED Home

For refcode 2004A&A...421..473M:
Retrieve 1 NED object in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by European Southern Observatory (ESO). Reproduced by permission
2004A&A...421..473M The complex X-ray spectrum of NGC 4507 G. Matt, S. Bianchi, F. D'Ammando and A. Martocchia Received 9 January 2004 / Accepted 5 March 2004 XMM- Newton and Chandra/HETG spectra of the Compton-thin (N_H~_4_ x 10^23^ 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 x 10^22^ cm^-2^. Keywords: galaxies: individual: NGC 4507, galaxies: Seyfert, X-rays: galaxies
Retrieve 1 NED object in this reference.
Please click here for ADS abstract

Back to NED Home