Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-11-12
Astron.Astrophys. 398 (2003) 107-126
Astronomy and Astrophysics
Astrophysics
6 pages, 4 figures, Latex manuscript, Accepted for publication in Astronomy and Astrophysics
Scientific paper
10.1051/0004-6361:20021633
We present the XMM-Newton observation of the merging system IRAS 19254-7245, also known as The Superantennae, whose southern nucleus is classified as a Seyfert 2 galaxy. The XMM-Newton data have allowed us to perform a detailed X-ray imaging and spectral analysis of this system. We clearly detect, for the first time in this system, a strong EW ~ 1.4 keV Fe emission line at 6.49+/-0.1 keV (rest-frame). The X-ray spectrum requires a soft thermal component (kT~0.9 keV; L(0.5-2) ~ 4E41 cgs), likely associated with the starburst, and a hard power-law continuum above 2 keV (observed L(2-10) ~ 4E42 cgs). We confirm the flatness of this latter component, already noted in previous ASCA data. This flatness, together with the detection of the strong Fe-Kalpha line and other broad band indicators, suggest the presence of a Compton-thick AGN with intrinsic luminosity > 1E44 cgs. We show that a Compton-thick model can perfectly reproduce the X-ray spectral properties of this object.
Bassani Loredana
Braito Valentina
Cappi Massimo
Ceca Roberto Della
Franceschini Alberto
No associations
LandOfFree
XMM-Newton observations of ULIRGs I: A Compton-thick AGN in IRAS19254-7245 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with XMM-Newton observations of ULIRGs I: A Compton-thick AGN in IRAS19254-7245, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and XMM-Newton observations of ULIRGs I: A Compton-thick AGN in IRAS19254-7245 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-18606