2004A&A...413..921D


Query : 2004A&A...413..921D

2004A&A...413..921D - Astronomy and Astrophysics, volume 413921-927 (2004/1-3)

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

DADINA M. and CAPPI M.

Abstract (from CDS):

We report on the analysis of a BeppoSAX observation of IRAS 13197-1627. The complexity of the broad band (0.3-100keV) 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 5x1023cm–2 and ≥2x1024cm–2; 2) the intrinsic 2-10keV luminosity of the source is at least ∼2x1044erg/s 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∼7.5keV suggesting a possible outflow with v∼0.1c similar to recent findings on other QSOs and Seyferts.

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Journal keyword(s): galaxies: active - galaxies: individual: IRAS 13197-1627 - X-ray: quasar: general

Simbad objects: 5

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Number of rows : 5
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026
#notes
1 LEDA 88588 Sy1 07 08 41.4886614696 -49 33 06.308921700   16.02 15.7 12.7   ~ 566 0
2 PB 3894 Sy1 12 14 17.6738687784 +14 03 13.182723144   14.46 14.19     ~ 873 0
3 NGC 4253 Sy1 12 18 26.5163572920 +29 48 46.531535472   14.34 13.57     ~ 1106 1
4 MCG-03-34-064 Sy2 13 22 24.4583154360 -16 43 42.481822404   14   13.16   ~ 345 2
5 LEDA 88835 Sy1 13 25 19.3805530608 -38 24 52.611680340   16.64 13.80 15.33 14.78 ~ 457 0

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