2004A&A...413..913P


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.02CET03:27:44

2004A&A...413..913P - Astronomy and Astrophysics, volume 413, 913-920 (2004/1-3)

XMM-Newton observation of the Seyfert 1 ESO 198-G24.

PORQUET D., KAASTRA J.S., PAGE K.L., O'BRIEN P.T., WARD M.J. and DUBAU J.

Abstract (from CDS):

We present the results from an XMM-Newton observation (January 24, 2001) of the bright Seyfert 1 galaxy ESO 198-G24 (z=0.045). We found that this Seyfert has an intrinsic 2-10keV luminosity of about 1044erg/s. This source shows no intrinsic absorption in addition to the Galactic absorption (NH∼3x1020cm–2). We found both with EPIC and RGS that this source possesses significantly steeper spectra below ∼1.5-2keV than observed at higher X-ray energies, the so-called soft X-ray excess. The RGS spectra reveal no significant narrow absorption lines suggesting that if there is a warm absorber, it either has a relatively low column density, or a very high ionization parameter. The RGS data are well described by the combination of a power-law, a modified black body continuum, and weak relativistic lines of OVIII, and CVI Lyα. However other interpretations are not definitely excluded. The 2-10keV energy band is well fitted by an absorbed power-law with a photon spectral index of Γ=1.77±0.04 (consistent with the typical Γ∼1.7 found in Seyfert1 galaxies). We found the presence of a narrow Gaussian emission line at 6.41keV (i.e. <FeXVII) with a moderate equivalent width of about 60-70eV, and we found an upper limit for a broad component, if any, of 75eV. We also found a weak absorption edge associated with cold iron with an optical depth of about 0.2.

Abstract Copyright:

Journal keyword(s): galaxies: active - quasars: individual: ESO 198-G24 - X-rays: galaxies

Simbad objects: 8

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Number of rows : 8

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 ESO 198-24 Sy1 02 38 19.7165906722 -52 11 32.346023872   15.36 14.17 13.75   ~ 144 0
2 QSO B0558-5026 BLL 05 59 47.3917733375 -50 26 52.026945176   15.18 14.97     ~ 250 1
3 NGC 3783 Sy1 11 39 01.7095761008 -37 44 19.008597647   12.46 13.43 11.33 12.1 ~ 1500 0
4 NGC 4253 Sy1 12 18 26.5155239433 +29 48 46.518670434   14.34 13.57     ~ 950 1
5 Mrk 205 Sy1 12 21 44.0723278508 +75 18 38.242986688   15.64 15.24 14.7   ~ 453 0
6 ESO 383-35 Sy1 13 35 53.7686909139 -34 17 44.139127597   13.89 13.61 8.9   ~ 1400 0
7 NGC 5548 Sy1 14 17 59.5401093128 +25 08 12.600227883   14.35 13.73     ~ 2445 0
8 Mrk 509 Sy1 20 44 09.7504131334 -10 43 24.724854084   13.35 13.12 10.7   ~ 1149 0

    Equat.    Gal    SGal    Ecl

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2021.03.02-03:27:44

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