Open Access
Table 5.
Model-fit parameters for the regions studied in NGC 628.
| Region | Model | kT1 | kT2 | Photon |  |
Net | Net cts |
|---|---|---|---|---|---|---|---|
| type | [keV] | [keV] | Index | cts | /sqarcmin | ||
| B1 | wabs(mekal+power law) | 0.23 |
– | 2.22 |
0.91 | 1649 | 1994 |
| B1 | wabs(mekal+mekal) |
 |
 |
– | 0.82 | 1649 | 1994 |
| I1 | wabs(mekal+power law) | 0.20±0.01 | – | 1.39 |
1.01 | 6164 | 738 |
| I2 | wabs(mekal+power law) | 0.18 |
– | 1.74 |
1.37 | 2134 | 738 |
| I3 | wabs(mekal+power law) | 0.20±0.02 | – | 1.76 |
1.15 | 2775 | 960 |
| I4 | wabs(mekal+power law) | 0.16 |
– | 2.22 |
1.04 | 3775 | 705 |
| R1 | wabs(mekal+power law) | 0.21 |
– | 1.27 |
1.06 | 982 | 798 |
| S1 | wabs(mekal+power law) | 0.23±0.01 | – | 2.18 |
1.04 | 7996 | 1985 |
| S1 | wabs(mekal+mekal+power law) | 0.20 ± 0.02 | 0.77 ± 0.17 | 1.63 |
1.11 | 7996 | 1985 |
| S2 | wabs(mekal+power law) | 0.21±0.02 | – | 2.28 |
1.07 | 5128 | 1260 |
| S2 | wabs(mekal+mekal+power law) | 0.08 ± 0.03 | 0.26 |
1.32 |
0.73 | 5128 | 1260 |
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