2010A&A...518A..47R


Query : 2010A&A...518A..47R

2010A&A...518A..47R - Astronomy and Astrophysics, volume 518, A47-47 (2010/7-2)

Multi-zone warm and cold clumpy absorbers in three Seyfert galaxies.

RICCI C., BECKMANN V., AUDARD M. and COURVOISIER T.J.-L.

Abstract (from CDS):

We present the first detailed X-ray analysis of three active galactic nuclei, the Seyfert 1 galaxies UGC 3142 and ESO 140-43, and the Seyfert 2 galaxy ESO 383-18, to study the geometry and the physical characteristics of their absorbers. High-quality XMM-Newton EPIC and RGS data were analyzed as well as Swift/XRT and BAT and INTEGRAL IBIS/ISGRI data to cover the 0.3-110keV energy range. For ESO 140-43 also XMM-Newton/OM and Swift/UVOT data were used. We studied the variability of the three AGN on a time-scale of seconds using the EPIC/PN light curves, and the long-term time-scale variability of ESO 140-43 using two observations performed six months apart by XMM-Newton. The spectra of the three Seyfert galaxies present a ``soft excess'' at energies E<2keV above a power law continuum that can be modeled by complex absorption, without any additional emission component. The X-ray sources in UGC 3142 and ESO 383-18 are absorbed by two layers of neutral material, with covering fractions f1≃0.92 and f2≃0.57 for UGC 3142, and f1≃0.97 and f2≃0.86 for ESO 383-18. While the clumpy absorber could be part of a disk wind or of the broad line region for UGC 3142, for ESO 383-18 a clumpy torus plus Compton thin dust lanes are more likely. The spectra of ESO 140-43 can be well fitted with a power law absorbed by three clumpy ionized absorbers with different covering factors, column densities, and ionization parameters, likely part of a moving clumpy system, which could be a disk wind or the broad line region. The strong spectral and flux variability on a time-scale of six months seen in ESO 140-43 is likely due to changes in the moving absorbers. We were able to detect the variation of the covering factor of one of the three ionized absorbers on a kilo-seconds time-scale in the EPIC light-curve of ESO 140-43.

Abstract Copyright:

Journal keyword(s): galaxies: general - X-rays: galaxies - X-rays: general - galaxies: active - galaxies: Seyfert

Simbad objects: 12

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Number of rows : 12
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 NGC 1365 Sy1 03 33 36.458 -36 08 26.37 10.48 10.08 9.63 8.79 9.7 ~ 1686 2
2 UGC 3142 Sy1 04 43 46.7995385520 +28 58 18.955695972   16.5       ~ 69 0
3 LEDA 88588 Sy1 07 08 41.4886614696 -49 33 06.308921700   16.02 15.7 12.7   ~ 486 0
4 2MASSI J0918486+211717 Sy1 09 18 48.6116628720 +21 17 17.070127044   18.72 17.94     ~ 41 0
5 NGC 3147 Sy2 10 16 53.6388580752 +73 24 02.641798224   11.43 10.61     ~ 463 2
6 NGC 3516 Sy1 11 06 47.4632200800 +72 34 07.298374656   13.12 12.40     ~ 1496 0
7 NGC 3783 Sy1 11 39 01.7096819040 -37 44 19.009642992   12.46 13.43 11.33 12.1 ~ 1586 0
8 NGC 4698 Sy2 12 48 22.9082830584 +08 29 14.667552276   13.24 12.27     ~ 468 0
9 IC 4271 Sy2 13 29 21.4493074392 +37 24 50.460172056   15.6       ~ 124 1
10 ESO 383-18 Sy2 13 33 26.1018852696 -34 00 53.311162860   15.29 15.32 14.30   ~ 72 0
11 ESO 140-43 Sy1 18 44 53.9892878664 -62 21 52.874216640   14.14 14.10 12.94 13.1 ~ 229 0
12 NAME MR 2251-178 Sy1 22 54 05.8858611984 -17 34 55.402233708   14.99 14.36 15.12   ~ 413 3

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2023.01.31-01:09:29

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