Table 5: Best-fit parameters for EPIC spectra of HD 168112 in the case of a wabs $_{{\rm ISM}}$*wind*(2-T mekal) model. Results are given for combined MOS, pn, and combined EPIC spectra. The upper and bottom parts of the table concern the first and second observation respectively. The ISM absorption component ( wabs $_{{\rm ISM}}$) is frozen at 0.58 $\times $ 1022 cm-2. The quoted circumstellar absorption column is ionized, with $N_{\rm W}$ expressed in cm-2. The last column gives the observed flux between 0.4 and 10.0 keV for each fitting result. The normalization parameter (Norm) of the mekal component is defined as $(10^{-14}/(4~\pi~D^2))\int{n_{\rm e}~n_{\rm H}~{\rm d}V}$, where D, $n_{\rm e}$ and $n_{\rm H}$ are respectively the distance to the source (in cm), and the electron and hydrogen number densities (in cm-3). The error bars represent the 1-$\sigma $ confidence interval.
  ${\rm Log}\ {{N}_{\rm W}}$ kT1 Norm1 kT2 Norm2 $\chi^2_\nu$ Obs. flux
    (keV)   (keV)   d.o.f. (erg cm-2 s-1)
MOS1 + MOS2 21.90 0.29 5.36 $\times $ 10-3 2.72 3.33 $\times $ 10-4 0.98 4.77 $\times $ 10-13
  $\pm$0.07 $\pm$0.02 $\pm$2.93 $\times $ 10-3 $\pm$0.62 $\pm$1.01 $\times $ 10-4 174  
pn 21.89 0.27 5.59 $\times $ 10-3 2.00 4.77 $\times $ 10-4 1.07 4.78 $\times $ 10-13
  $\pm$0.07 $\pm$0.02 $\pm$3.29 $\times $ 10-3 $\pm$0.33 $\pm$1.14 $\times $ 10-4 136  
MOS1 + MOS2 21.90 0.28 5.57 $\times $ 10-3 2.29 4.06 $\times $ 10-4 1.01 4.79 $\times $ 10-13
+ pn $\pm$0.05 $\pm$0.02 $\pm$2.25 $\times $ 10-3 $\pm$0.31 $\pm$0.76 $\times $ 10-4 315  
MOS1 + MOS2 21.88 0.26 5.14 $\times $ 10-3 2.36 2.93 $\times $ 10-4 0.90 3.59 $\times $ 10-13
  $\pm$0.08 $\pm$0.02 $\pm$3.44 $\times $ 10-3 $\pm$0.49 $\pm$0.82 $\times $ 10-4 116  
pn 21.96 0.25 6.68 $\times $ 10-3 2.16 2.97 $\times $ 10-4 1.01 3.34 $\times $ 10-13
  $\pm$0.06 $\pm$0.01 $\pm$3.06 $\times $ 10-3 $\pm$0.42 $\pm$0.83 $\times $ 10-4 89  
MOS1 + MOS2 21.93 0.25 6.14 $\times $ 10-3 2.23 2.97 $\times $ 10-4 0.94 3.44 $\times $ 10-13
+ pn $\pm$0.05 $\pm$0.01 $\pm$2.41 $\times $ 10-3 $\pm$0.32 $\pm$0.59 $\times $ 10-4 210  


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