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Table 4

0.57 keV continuum spectra of PID 203 and PID 319.

PID Γ N H χ2/d.o.f.
(1) (2) (3)

203 2.00 ± 0.01 5.5 ± 0.7 461.7/502
319 2.05 ± 0.01 <0.2 554.7/454

Notes. (1) Photon index of power law; (2) Absorbing column density of cold matter in excess of the Galactic absorption (NH = 7 × 1019 cm-2), measured in the galaxy rest-frame in units of 1020 cm-2. The upper limit for PID 319 is the 90% confidence limit; (5) χ2 value and the degrees of freedom (d.o.f.). This χ2 was obtained when a Gaussian is included in the fit to describe the Fe K feature, details of which are shown in Table 5. This single absorbed power law gives a good fit for the full band continuum of PID 203, while the poor quality of fit for PID 319, as indicated by the χ2 value, is caused by the spectral break (or curvature, see text).

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