EDP Sciences
Free Access
Issue
A&A
Volume 413, Number 3, January III 2004
Page(s) 921 - 927
Section Galactic structure and dynamics
DOI https://doi.org/10.1051/0004-6361:20031561


A&A 413, 921-927 (2004)
DOI: 10.1051/0004-6361:20031561

Complex absorption hides a Type II QSO in IRAS 13197-1627

M. Dadina and M. Cappi

IASF-CNR Sezione di Bologna, via Gobetti 101, 40129 Bologna, Italy
    e-mail: dadina@bo.iasf.cnr.it;cappi@bo.iasf.cnr.it
(Received 28 July 2003 / Accepted 1 October 2003)

Abstract
We report on the analysis of a BeppoSAX observation of IRAS 13197-1627. The complexity of the broad band (0.3-100 keV) spectrum of the source prevents us from selecting from two possible best-fit models, i.e. one based on a partial covering and the other on a reflection dominated scenario. Whatever the best fit model, the data imply that: 1) the primary spectrum is heavily obscured by at least two absorbers with column densities of the order of 5  $\times$ 10 23 cm -2 and $\geq$$\times$ 10 24 cm -2; 2) the intrinsic 2-10 keV luminosity of the source is at least ~2  $\times$ 10 44 erg s -1 thus making IRAS 13197-1627 a type-II QSO (more precisely a type 1.8 QSO) rather than a Seyfert 1.8 galaxy as previously classified. Furthermore, there is marginal evidence of an absorption line at $E \sim$ 7.5 keV suggesting a possible outflow with $v \sim$ 0.1c similar to recent findings on other QSOs and Seyferts.


Key words: galaxies: active -- galaxies: individual: IRAS 13197-1627 -- X-ray: quasar: general

Offprint request: M. Dadina, dadina@bo.iasf.cnr.it

SIMBAD Objects



© ESO 2004

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.