Table 5
X-ray spectrum analysis: best-fit 1-T or 2-T models of the type wabs ∗ mekal or wabs ∗ mekal+mekal.
| Source | Pointing | Instrument | N H | k T 1 | k T 2 |  (d.o.f.) |
fX(0.5–10 keV) | Counts | Remarks |
| (1022 cm-2) | (keV) | (keV) | (10-14 erg cm-2 s-1) | ||||||
|
|
|||||||||
| #7 | IV | EPIC |
|
|
|
0.66(24) | 8.3 | 269 | see (1) |
| #30 | III | EPIC |
|
|
– | 1.03(42) | 14.0 | 310 | see (2) |
| #39 | II | EPIC |
|
|
|
1.19(19) | 10.3 | 292 | see (3) |
| #42 | VII | EPIC |
|
|
|
0.97(104) | 32.7 | 1240 | see (4) |
| #42 | VII | EPIC |
|
|
|
0.97(104) | 32.7 | 1240 | 0.3 solar |
|
|
|||||||||
| #6 | Comb. | MOS |
|
|
– | 1.26(113) | 2.4 | 674 | |
| #6 | Comb. | pn |
|
|
– | 1.01(63) | 2.0 | 633 | |
| #6 | Comb. | MOS | 0.25* |
|
– | 1.27(114) | 2.3 | 674 | |
| #6 | Comb. | pn | 0.25* |
|
– | 1.01(64) | 2.0 | 633 | |
| #18 | Comb. | MOS |
|
|
hot | 1.05(181) | 12.2 | 1376 | see (5) |
| #18 | Comb. | pn |
|
|
hot | 0.98(82) | 11.8 | 1211 | |
| #23 | Comb. | MOS |
|
|
|
0.98(108) | 3.1 | 498 | see (6) |
| #23 | Comb. | pn |
|
|
|
0.98(48) | 2.0 | 821 | |
| #23 | Comb. | MOS |
|
|
|
0.96(108) | 3.0 | 498 | 0.3 solar |
| #23 | Comb. | pn |
|
|
|
0.97(48) | 2.1 | 821 | 0.3 solar |
| #32 | Comb. | MOS |
|
|
|
1.03(177) | 9.8 | 1614 | see (7) |
| #32 | Comb. | MOS |
|
|
|
0.95(177) | 10.4 | 1614 | 0.3 solar |
Notes. The first part is for objects dominating in one pointing (Sect. 5.1) and the second part (Sect. 5.2) for constant objects for which we combined all pointings (II to VII).
(1) The spectral fit with a powerlaw or a single cool mekal already leads to = 0.81–0.84 (d.o.f. = 26). (2) The spectral fit is further supported by the position of source #30 in the HR diagram (Fig. 4). (3) A wabs ∗ powerlaw gives NH = 0.21 × 1022 cm-2 and Γ = 2.68 ( = 1.39, d.o.f. = 21). (4) A simple model of the type wabs ∗ powerlaw gives NH = 0.19 × 1022 cm-2 and Γ = 2.58 ( = 1.04, d.o.f. = 106; in good agreement with its position in Fig. 4). (5) A model of the type wabs ∗ powerlaw yields NH = 0.19−0.22 × 1022 cm-2 and Γ = 1.89−1.79 (
= 1.04, d.o.f. = 183; 
= 1.00, d.o.f. = 84) as confirmed by source #18 position in Fig. 4. (6) Hardness ratios (Fig. 4) and 1-T model fits favour NH = 0. cm-2 and kT = 0.9−1.5 keV. (7) A model of the type wabs ∗ powerlaw suggests an absorbing column of NH = 0.26 × 1022 cm-2 and a photon index Γ = 3.24 ( = 0.99, d.o.f. = 179).
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