2002A&A...386..427K


C.D.S. - SIMBAD4 rel 1.7 - 2021.06.20CEST06:48:13

2002A&A...386..427K - Astronomy and Astrophysics, volume 386, 427-445 (2002/5-1)

X-ray spectroscopy of NGC 5548.

KAASTRA J.S., STEENBRUGGE K.C., RAASSEN A.J.J., VAN DER MEER R.L.J., BRINKMAN A.C., LIEDAHL D.A., BEHAR E. and DE ROSA A.

Abstract (from CDS):

We analyze the high-resolution X-ray spectrum of the Seyfert 1 galaxy NGC 5548, for the full 0.1-10keV band, using improved calibration results of the Chandra-LETGS instrument. The warm absorber consists of at least three ionization components, with a low, medium and high ionization parameter. The X-ray absorbing material, from an outflowing wind, covers the full range of velocity components found from UV absorption lines. The presence of redshifted emission components for the strongest blue-shifted resonance absorption lines indicate that the absorber is located at a distance larger than the edge of the accretion disk. We derive an upper limit to the edge of the accretion disk of 1 light year. Absorption lines from ions of at least ten chemical elements have been detected, and in general there are no strong deviations from solar abundances. The narrow emission lines from the OVII and NeIX forbidden and intercombination lines probably originate from much larger distances to the black hole. We find evidence for weak relativistically broadened oxygen and nitrogen emission lines from the inner parts of the accretion disk, but at a much smaller flux level than those observed in some other active galactic nuclei. In addition, there is a broad, non-relativistic CVI Lyα emission line that is consistent with emission lines from the inner part of the optical/UV broad line region.

Abstract Copyright:

Journal keyword(s): galaxies: individual: NGC 5548 - galaxies: Seyfert - quasars: absorption lines - quasars: emission lines - X-rays: galaxies

Simbad objects: 9

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Number of rows : 9

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 M 77 GiP 02 42 40.771 -00 00 47.84 9.70 9.61 8.87 10.1 9.9 ~ 4218 2
2 * alf Aur SB* 05 16 41.35871 +45 59 52.7693 1.33 0.88 0.08 -0.52 -0.96 G3III: 1149 0
3 4U 0708-49 Sy1 07 08 41.4887418009 -49 33 06.308287663   16.02 15.7 12.7   ~ 446 0
4 NGC 4253 Sy1 12 18 26.5155239433 +29 48 46.518670434   14.34 13.57     ~ 959 1
5 HZ 43 ** 13 16 21.85329 +29 05 55.3793   12.52 12.66     DAwk+M3.5Ve 450 0
6 ESO 383-35 Sy1 13 35 53.7686909139 -34 17 44.139127597   13.89 13.61 8.9   ~ 1405 0
7 2RE J1337+244 Sy1 13 37 18.7198121987 +24 23 03.320690345     15.0     ~ 367 0
8 NGC 5548 Sy1 14 17 59.5401093128 +25 08 12.600227883   14.35 13.73     ~ 2463 0
9 QSO B2155-304 BLL 21 58 52.0651817803 -30 13 32.120657891   13.36 13.09 12.62   ~ 1607 1

    Equat.    Gal    SGal    Ecl

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2021.06.20-06:48:13

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