Table 7: Fit results on the X-ray spectrum from the nucleus of NGC 2903 (area 2).
Model $N_{\rm H}$ kT $\Gamma$ Z Norm Red. $\chi^2$ d.o.f. $F_{\rm X}$ $L_{\rm X}$
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
RS $\rm0.95^{+0.42}_{-0.31}$ $\rm0.82^{+0.05}_{-0.07}$   1 1.1 2.7 9 $\rm0.36^{+0.04}_{-0.03}$ $\rm0.34^{+0.04}_{-0.03}$
RS $\rm 3.51^{+0.62}_{-0.49}$ $\rm0.78^{+0.07}_{-0.10}$   0.1 6.6 1.2 9 $\rm0.59^{+0.01}_{-0.01}$ $\rm0.56^{+0.01}_{-0.01}$
BS $\rm 6.56^{+1.31}_{-0.92}$ $\rm0.54^{+0.11}_{-0.10}$     2.4 1.1 9 $\rm 1.18^{+0.14}_{-0.16}$ $\rm 1.12^{+0.13}_{-0.15}$
PO $\rm 9.71^{+1.88}_{-1.00}$   $\rm 3.27^{+0.30}_{-0.25}$   2.0 1.4 9 $\rm 4.70^{+3.00}_{-1.50}$ $\rm 4.50^{+2.90}_{-1.40}$
Column (1): spectral models: BS = thermal Bremsstrahlung, RS = Raymond-Smith, PO = power law.
Column (2): column density in units of 1020 cm-2.
Column (3): plasma temperature in units of keV.
Column (4): photon index.
Column (5): metallicity in units of $Z_\odot $; fixed values.
Column (6): scaling factor: for BS in units of (10-18/(4$\pi D^2$)) $\int n_{\rm e}n_{\rm I}$dV, $n_{\rm e}, n_{\rm H}$ = electron and ion densities (cm-3); for RS in units
of (10-18/(4$\pi D^2$)) $\int n_{\rm e}n_{\rm H}$dV, $n_{\rm e}, n_{\rm H}$ = electron and H densities (cm-3); for PO in units of 10-4 photons keV-1 cm-2 s-1 at 1 keV.
Column (7): reduced $\chi^2$.
Column (8): degrees of freedom.
Column (9): unabsorbed X-ray flux in units of 10-12 erg cm-2 s-1.
Column (10): X-ray luminosity in units of 1040 erg s-1.

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