Table 6: Results of the EPIC PN spectral analysis.
Model Parameters
PL$\cdot$Abs. $\Gamma=2.77^{+0.04}_{-0.04}$; $F_{\rm p12}=4.38^{+0.14}_{-0.13}$
(A) $N_{\rm H20}=16.0^{+0.7}_{-0.6}$
PL+Thermal (bbody) $\Gamma=2.50^{+0.09}_{-0.05}$; $F_{\rm p12}=3.38^{+0.36}_{-0.18}$;
$\cdot$Abs. kT=.14+0.01-0.02;
(B) $L_{39}/D^{2}_{10}=(2.84^{+1.64}_{-0.47})\times 10^{-5}$;
  $N_{\rm H20}=16.4^{+2.6}_{-1.1}$;
PL+Thermal (diskbb) $\Gamma=2.51^{+0.07}_{-0.07}$; $F_{\rm p12}=3.40^{+0.29}_{-0.26}$;
$\cdot$Abs. $T{\rm in}=.16^{+0.02}_{-0.01}$;
(C) $(R_{\rm in}/D)^{2} cos \theta=407^{+516}_{-193}$
  $N_{\rm H20}=18.7^{+2.3}_{-0.9}$;
PL+Thermal (mekal) $\Gamma=2.65^{+.05}_{-.05}$; $F_{\rm p12}=3.97^{+0.23}_{-0.19}$;
$\cdot$Abs. kT=.22+0.02-0.02; Z=1.0;
(D) $A_{\rm t}=(3.93^{+1.75}_{-0.77})\times 10^{-4}$;
  $N_{\rm H20}=16.2^{+1.3}_{-0.9}$;
PL+Thermal (mekal+ $\Gamma=2.52^{+.06}_{-.08}$; $F_{\rm p12}=3.42^{+.22}_{-0.32}$;
bbody) $\cdot$Abs. $kT_{\rm mekal}=.15^{+0.03}_{-0.04}$; Z=1.0;
(E) $A_{\rm t}=(4.6^{+10.3}_{-2.0})\times 10^{-4}$;
  $kT_{\rm bbody}=.15^{+0.01}_{-0.03}$;
  $L_{39}/D^{2}_{10}=(2.2^{+1.3}_{-0.6})\times 10^{-5}$;
  $N_{\rm H20}=16.9^{+1.3}_{-1.7}$;
Fit parameters are shown with 90% errors ( $\Delta \chi^2=2.7$). The model and parameter definitions are: model components - PL: power-law with a photon index of $\Gamma$ and a 0.5-2 keV flux of $F_{\rm p12}$ in units of 10-12 erg cm-2 s-1. Thermal - thin plasma: thermal plasma using the XSPEC mekal model with a plasma temperature kT [keV], a metal abundance Z=1 in solar units, and the normalization defined by XSPEC $A_{\rm th}$. Thermal - multi color disk: the multicolor disk (Mitsuda et al. 1984) distributed as the XSPEC model (diskbb) with an inner disk temperature $kT_{\rm in}$ and with an normalization defined as $(R_{\rm in}/D) \cos \theta$, where $R_{\rm in}$ is the inner disk radius and D is the distance to the source in 10 kpc units, and $\theta$ is the viewing angle of the disk axis. Thermal - thick plasma: thermal thick plasma using the XSPEC bbody model with a plasma temperature kT [keV], with a normalization defined as L39/ D210, where L39 is the source luminosity in units of 1039 erg s-1 and D10 is the distance to the source in units of 10 kpc. Abs: absorption by neutral gas using the XSPEC model wabs (Morrison R. McCammon D. 1983, ApJ 270 190) with hydrogen column density $N_{\rm H20}$ $[10^{20}~{\rm cm}^{-2}]$.

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