Table 5
Best-fit values of the continuum parameters as a function of the orbital phase of X1822-371.
| Spectra | Parameters | Phase intervals | ||||
| 0.04–0.25 | 0.25–0.50 | 0.50–0.75 | 0.75–0.95 | 0.95–1.04 | ||
| 1 | 2 | 3 | 4 | 5 | ||
|
|
||||||
| HETGS | NH (1022 cm-2) | 0.163 (fixed) | 0.163 (fixed) | 0.163 (fixed) | 0.163 (fixed) | 0.163 (fixed) |
| NHpc (1022 cm-2) | 4.9 ± 0.2 | 4.8 ± 0.2 | 4.7 ± 0.3 | 4.8 ± 0.3 |
|
|
| f |
|
0.63 ± 0.03 | 0.65 ± 0.04 | 0.66 ± 0.04 |
|
|
| kT0 (keV) | 0.060 (fixed) | 0.059 (fixed) | 0.054 (fixed) | 0.054 (fixed) | 0.059 (fixed) | |
| kTe (keV) |
|
|
2.8 ± 0.3 |
|
|
|
| τ | 17.80 ± 0.14 | 20 ± 2 | 20 ± 2 | 18 ± 2 |
|
|
| NCompst (10-2) |
|
17.8 ± 0.8 | 13.2 ± 0.9 |
|
|
|
| Unabs. Flux |
|
|
|
|
|
|
 (d.o.f.) |
0.70(3687) | 0.73(4035) | 0.67(3611) | 0.63(3029) | 0.49(1467) | |
|
|
||||||
| XMM | NH (1022 cm-2) | 0.163 (fixed) | 0.163 (fixed) | 0.163 (fixed) | 0.163 (fixed) | 0.163 (fixed) |
| NHpc (1022 cm-2) | 5.1 ± 0.2 | 5.5 ± 0.2 | 5.1 ± 0.2 | 4.4 ± 0.2 | 5.1 ± 0.4 | |
| f |
|
0.612 ± 0.014 |
|
|
|
|
| kTbb (keV) |
|
0.059 ± 0.006 | 0.054 ± 0.005 |
|
0.059 ± 0.015 | |
| Nbb ( × 10-3) |
|
|
1.4 ± 0.7 |
|
|
|
| kT0 (keV) |
|
0.059 ± 0.006 | 0.054 ± 0.005 |
|
0.059 ± 0.015 | |
| kTe (keV) | 3.06 ± 0.09 | 3.11 ± 0.07 | 3.06 ± 0.07 | 2.98 ± 0.08 | 3.0 ± 0.2 | |
| τ | 20.3 ± 0.7 | 20.6 ± 0.5 | 20.0 ± 0.6 | 22.5 ± 0.8 |
|
|
| NCompst ( × 10-2) |
|
8.8 ± 0.5 | 8.99 ± 0.12 | 6.5 ± 0.3 | 5.4 ± 0.7 | |
| Unabs. Flux | 5.99 ± 0.03 | 7.22 ± 0.03 | 6.60 ± 0.03 | 5.52 ± 0.03 |
|
|
| (d.o.f.) |
1.00(839) | 1.06(1015) | 0.97(1115) | 1.01(728) | 0.98(487) | |
Notes. Uncertainties are at the 90% c.l. for each parameter. The 0.4–12 keV unabsorbed flux is given in units of 10-10 erg s-1 cm-2. The (d.o.f.) and χ2(d.o.f.) values are obtained taking into account the emission lines shown in Table 6.
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