Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008rmxac..32..135c&link_type=abstract
The Nuclear Region, Host Galaxy and Environment of Active Galaxies (Eds. Erika Benítez, Irene Cruz-González, & Yair Krongold) Re
Astronomy and Astrophysics
Astronomy
1
Galaxies: Absorption Lines, Galaxies: Seyfert, Galaxies: Active, Galaxies: X-Rays
Scientific paper
We have performed the analysis of the X-ray XMM-Newton spectra of the narrow line Seyfert 1 galaxy UGC 11763 (Mkn 1513). We have studied the EPIC data in the range 0.35-10.0 keV (1.2-35.4 Å) and also the high resolution soft X-ray spectra taken with the Reflection Grating Spectrometers (RGSs) in the range 10-30 Å (0.41-1.2 keV). The principal feature observed in the hard X-ray spectrum is a weak Fe-Kalpha fluorescence line. The soft X-ray spectra are characterised by absorption features. The most significant of them is the one between 15 and 18 Å (in the rest frame of the object). We have identified this broad absorption with the UTA (unresolved transition array) produced by Fe M-shell transitions which was reported for the first time by Sako et al. (2001), and that is indicative of the presence of absorbing material in the vicinity of the active nucleus.
Cardaci Monica V.
Diaz Angeles I.
Hagele Guillermo F.
Krongold Yair
Rodriguez-Pascual Pedro
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