Table 1: Results of modeling the BeppoSAX-NFI and XMM-Newton spectra (last entry) with a combination of a disk black body model (Mitsuda et al. 1984; Makishima et al. 1986), Comptonization of soft photons in a hot plasma (Titarchuk 1991), and a narrow emission line.
Observation date in 2000 Exposure$^\ddag $ Model Parameters$^\ast$ 2-10 and 0.3-10 keV unabs. flux$^\dagger$ $\chi^{2}_{\nu}$ (d.o.f.)
Mar. 13.19-13.85 21.4 ks $N_{\rm H}=8.8^{+0.6}_{-0.3}$ $kT_{\rm in}=1.9\pm0.1$, $R_{\rm in}^{2}\cos\theta=16.5^{+2.5}_{-1.0}$ kT0=0.48+0.03-0.20, $kT_{\rm e}=\rm unconstrained$, $\tau<3$ $E_{\rm line}=6.82\pm0.06$, EW=35 eV, $f=(9.2\pm2.1)$ $3.9\times10^{-9}$       (79) $5.9\times10^{-9}$   0.96 (70)


Mar. 16.71-17.48

 34.4 ks $N_{\rm H}=9.3^{+0.7}_{-0.3}$ $kT_{\rm in}=1.83\pm0.02$, $R_{\rm in}^{2}\cos\theta=14.4^{+1.8}_{-0.9}$ $kT_{0}=0.4\pm0.1$, $kT_{\rm e}=\rm unconstrained$, $\tau<0.2$ $E_{\rm line}=6.78^{+0.07}_{-0.05}$, EW=41 eV, f=8.6+0.6-2.1 $3.0\times10^{-9}$      (82) $4.6\times10^{-9}$  1.09 (73)


Mar. 27.63-28.45

 36.6 ks $N_{\rm H}=8.8^{\P}$ $kT_{\rm in}=1.87^{+0.02}_{-0.07}$, $R_{\rm in}^{2}\cos\theta=7.3^{+5.5}_{-0.6}$ kT0=0.41+0.04-0.05, $kT_{\rm e}=\rm unconstrained$, $\tau=\rm unconstrained$ $E_{\rm line}=6.53^{+0.08}_{-0.07}$, EW=33.2 eV, f=4.1+1.1-1.0 $1.7\times10^{-9}$      (80) $2.6\times10^{-9}$   1.04 (70)


Apr. 7.09-7.82

 27.9 ks $N_{\rm H}=8.8^{\P}$ $kT_{\rm in}=0.43\pm0.04$, $R_{\rm in}^{2}\cos\theta=340^{+280}_{-160}$ kT0=0.16+0.02-0.01, $kT_{\rm e}=\rm unconstrained$, $\tau=\rm unconstrained$ $E_{\rm line}=6.75^{+0.03}_{-0.06}$, EW=285 eV, f=1.31+0.19-0.17 $9.3\times10^{-11}$      (17) $4.3\times10^{-10}$   1.00 (55)


Apr. 12.82-14.40

 57.2 ks $N_{\rm H}=8.8^{\P}$ $kT_{\rm in}=2.9\pm0.3$, $R_{\rm in}^{2}\cos\theta=0.20\pm0.04$ kT0<1.3, $kT_{\rm e}=\rm unconstrained$, $\tau=\rm unconstrained$ $E_{\rm line}=6.56^{+0.09}_{-0.03}$, EW=58.5 eV, f=2.3+0.4-0.3 $4.0\times10^{-10}$       (58) $7.1\times10^{-10}$   1.02 (64)


Sept. 21.39-21.63

 MOS    16.7 ks, EPIC-pn 7.6 ks $N_{\rm H}=8.8^{\P}$ $kT_{\rm in}=0.3\pm0.1$, $R_{\rm in}^{2}\cos\theta=7.0^{+59}_{-0.6}\times10^{2}$ $kT_{0}=0.6\pm0.1$, $kT_{\rm e}=39^{+128}_{-7}$, $\tau=0.15^{+0.42}_{-0.10}$ $8.7\times10^{-11}$      (1) $6.6\times10^{-10}$  1.38 (139)
$^\ddag $ Net exposure time as it applies to the MECS data;
$^\ast$Parameters and units: $N_{\rm H}$: hydrogen column density in units of 1022 cm-2; $kT_{\rm in}$: temperature at inner disk radius in keV; $R_{\rm in}^{2}\cos\theta$: $\theta$ is the disk inclination angle, $R_{\rm in}$ is the disk inner radius in kilometers for a source at 10 kpc; kT0: temperature of the Comptonized soft seed photons in keV; $kT_{\rm e}$: temperature of the electron plasma in keV; $\tau$: optical depth of the plasma; $E_{\rm line}$: centroid energy of Gaussian line profile in keV; EW: equivalent width of the line; f: line flux in 10-4 phot s-1 cm-2.
$^\dagger$ Unabsorbed flux in units of ergs cm-2 s-1. The typical uncertainty in this number is 10% for 2-10 keV and a factor of 2 for 0.3-10 keV. The number between parentheses refers to the fraction in percents of detected photons coming from the blackbody component.
$^{\P}$ The value was frozen.


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