Table 8
Best fits of the EPIC spectra of Cyg OB2 #12 for photon energies above 0.4 keV.
| Cyg OB2 #12, wabs × (apec(T1) + apec(T2)) | ||||||||||
| Obs. | Inst. | d.o.f. | χ2 | NH | k T1 | norm1 | k T2 | norm2 |
|
|
| (1022 cm-2) | (keV) | (10-14 cm-5) | (keV) | (10-14 cm-5) | (erg cm-2 s-1) | (erg cm-2 s-1) | ||||
|
|
||||||||||
| 1 | M1+2 | 129 | 1.29 |
|
|
|
|
|
|
2.36 × 10-11 |
| 2 | M1+2 | 148 | 1.34 |
|
|
|
|
|
|
2.40 × 10-11 |
| 3 | EPIC | 255 | 1.72 |
|
|
|
|
|
|
2.64 × 10-11 |
| 4 | EPIC | 192 | 1.26 |
|
|
|
|
|
|
2.61 × 10-11 |
| 5 | EPIC | 108 | 1.15 |
|
|
|
|
|
|
2.00 × 10-11 |
| 6 | EPIC | 140 | 1.10 |
|
|
|
|
|
|
2.21 × 10-11 |
Notes. The first three columns yield the number of the pointing, the instrument combination used in the fit and the number of degrees of freedom. The reduced χ2 is given in Col. 4, whilst Cols. 5 to 9 provide the parameters of the absorption component and the emitting plasma. The last two columns yield the observed and absorption corrected flux over the 0.5 − 10.0 keV energy range.
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