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Home All issues Volume 496 / No 1 (March II 2009) A&A, 496 1 (2009) 107-119 Full HTML
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Table 1:

The best fit parameters for the different spectral components for the four spectra. All wavelengths and velocities refer to the rest frame of NGC 4051. Numbers in square brackets are calculated from the fit parameters; numbers in round brackets were kept fixed during the fit.
  A B C D
Continuum
$\bullet\ $power law
Flux (2-10 keV)a $0.83\pm 0.07$ $1.36\pm 0.08$ $2.93\pm 0.09$ $0.48\pm 0.05$
Photon index $\Gamma$ $1.65\pm 0.07$ $2.00\pm 0.05$ $2.24\pm 0.02$ $2.44\pm 0.05$
$\bullet\ $modified black body
Flux (0.2-10 keV)a $0.49\pm 0.08$ $ 0.66\pm0.14$ $2.0 \pm 0.2 $ $0.37\pm 0.09$
kT (eV) $ 95 \pm 6 $ $ 96 \pm 8 $ $143 \pm 4 $ $ 90 \pm 5 $
Absorption components
$\bullet\ $warm absorber 1
$N_{\rm H}$ (1025 m-2) - - $0.12\pm 0.04$ (0.12)
$\log\xi$ (10-9 W m) - - $0.07\pm 0.13$ $ 0.3\pm 0.2 $
$v_{\rm turb}$ (km s-1) - - $300 \pm 60 $ (300)
$v_{\rm out}$ (km s-1) - - $-210\pm 70 $ (-210)
$\bullet\ $warm absorber 2
$N_{\rm H}$ (1025 m-2) (0.17) $0.17\pm 0.05$ $0.29\pm 0.05$ (0.29)
$\log\xi$ (10-9 W m) $0.95\pm 0.25$ $0.49\pm 0.20$ $0.87\pm 0.09$ $0.52\pm 0.13$
$v_{\rm turb}$ (km s-1) (230) $230 \pm 120 $ $110 \pm 20 $ (110)
$v_{\rm out}$ (km s-1) (-330) $-330\pm 140 $ $-200\pm 30 $ (-200)
$\bullet\ $warm absorber 3
$N_{\rm H}$ (1025 m-2) (0.6) $ 0.6\pm 0.3 $ $0.8 \pm 0.4 $ (0.8)
$\log\xi$ (10-9 W m) $2.23\pm 0.17$ $1.98\pm 0.22$ $2.32\pm 0.13$ 2.4+0.6-0.2
$v_{\rm turb}$ (km s-1) (100) $ 100\pm 50 $ $ 90 \pm 30 $ (90)
$v_{\rm out}$ (km s-1) (-610) $-610\pm 110 $ $-580\pm 50 $ (-580)
$\bullet\ $warm absorber 4
$N_{\rm H}$ (1025 m-2) (9) $ 9 \pm 5 $ $ 20 \pm 10 $ (20)
$\log\xi$ (10-9 W m) $3.06\pm 0.10$ $2.92\pm 0.17$ $3.19\pm 0.09$ $ 3.2\pm 0.2 $
$v_{\rm turb}$ (km s-1) (120) $120 \pm 80 $ $ 19 \pm 13 $ (19)
$v_{\rm out}$ (km s-1) (-4590) $-4590\pm 180$ $-4670\pm 150$ (-4670)
Emission lines
$\bullet\ $O VIII Ly$\alpha $ (relativistic)b,c
Fluxd $ 12 \pm 2 $ $ 22 \pm 5 $ $ 6.8\pm 1.5 $ $ 3.5\pm 1.1 $
q (index Laor profile) (5.2) $ 5.2\pm 0.5 $ $2.06\pm 0.26$ (2.06)
FWHM (Å) [10] [10] [3.0] [3.0]
$\bullet\ $O VIII Ly$\alpha $ (BLR)b
Fluxd $ 0.1\pm 0.2 $ $ 0.0\pm 0.2 $ $ 1.8\pm 0.6 $ $0.8 \pm 0.4 $
FWHM (Å) (0.45) (0.45) $0.45\pm 0.14$ (0.45)
$\bullet\ $O VII triplet (BLR)
Fluxd $ 1.4\pm 0.6 $ $ 0.0\pm 0.7 $ $ 6.2\pm 1.4 $ $ 2.2\pm 1.2 $
FWHM (Å) (1.7) (1.7) $ 1.7\pm 0.4 $ (1.7)
$\lambda$ (Å) (22.11) (22.11) $22.11\pm 0.13$ (22.11)
$\bullet\ $O VII forbidden (narrow)
Fluxd $0.8 \pm 0.2 $ $ 0.9\pm 0.2 $ $ 1.0\pm 0.2 $ $ 1.3\pm 0.3 $
$\lambda$ (Å) $22.087\pm 0.005$ $22.081\pm 0.006$ $22.090\pm 0.009$ (22.090)
$\bullet\ $C VI Ly$\alpha $ (BLR)e
Fluxd $ 0.6\pm 0.4 $ $ 1.0\pm 0.5 $ $ 2.4\pm 0.8 $ $ 3.1\pm 0.7 $
FWHM (Å) (0.36) (0.36) $0.36\pm 0.13$ (0.36)
a Absorption-corrected flux in 10-14 W m-2; b wavelength is frozen to the rest wavelength of 18.967 Å (for O VIII Ly$\alpha $); c and an inclination angle of 48$^{\circ}$; d absorption-corrected photon flux in photons m-2 s-1; e wavelength is frozen to the rest wavelength of 33.736 Å.

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