Table 1
Mean EPIC pn spectrum of IRAS 18325–5926.
| Model | Γ | NH,C | E | σ | I | log ξO | NH,O | v/c | χ2/d.o.f. |
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
|
|
|||||||||
| PG | 2.08 ± 0.02 | 1.3 ± 0.1 | 6.61 ± 0.04 | 0.45 ± 0.05 | 3.8 ± 0.4 | – | – | – | 39.1/37 |
| PGO | 2.06 ± 0.01 | 1.3 | 6.61 ± 0.04 | 0.41 ± 0.05 | 3.4 ± 0.4 | 3.9 ± 0.4 | 5.7 ± 4.4 | 0.18 ± 0.01 | 29.0/35 |
| RO† | 2.05 ± 0.02 | 1.3 ± 0.1 | – | – | – | 3.9 ± 0.4 | 5.4 ± 3.8 | 0.18 ± 0.01 | 24.8/34 |
Notes. Spectral fitting results on the 2.3–11 keV mean spectrum obtained from the EPIC pn camera. The spectral data are plotted in 200 eV intervals. (1) Fitted models are PG: power-law modified by cold absorption plus a Gaussian line for Fe K; PGO: PG also modified by an outflowing ionized absorber computed by XSTAR; and RO: power-law supplemented by reflection from an ionized disc with relativistic blurring, computed by relxill and modified by the outflowing ionized absorption and cold absorption. (2) Photon index. (3) Column density of the cold absorption measured in the galaxy rest-frame and in units of 1022 cm-2. (4) Centroid energy of the Fe K emission measured in the galaxy rest-frame in units of keV, fitted by a Gaussian. (5) Fe K emission line width in units of keV. (6) Intensity of the Fe K emission line in units of 10-5 phcm-2s-1. (7) Logarithmic value of the ionization parameter ξO of the outflowing absorber in units of erg cm s-1. (8) Column density of the ionized absorber in units of 1022 cm-2. (9) Blueshift of the absorber in units of light velocity. (10) Chi-squared value of the fit and the degrees of freedom. †The best-fit parameters of the reflection model are listed in Table 4 and are discussed in Sect. 3.4.
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