Table A.1
Results of the iterative fit
| Step | Model | Position | Extension | Flux | ΔTS /d.o.f. | CSTAT |
|---|---|---|---|---|---|---|
| components | (Galactic coordinates) | (Degrees) | (10−12 cm−2 s−1 TeV −1) | significance | ||
| 0 | G0.9+0.1 |  |
1.04 ± 0.4stat | 1.13 | ||
 |
||||||
| HESS J1745−290 |  |
3.81 ± 0.4stat | ||||
 |
||||||
| 1 | G0.9+0.1 | l = 0.86°, b = 0.07° | 0.89 ± 0.04stat | 1640/2 | 1.043 | |
| HESS J1745−290 | l = 359.94°, b = −0.05° | 3.1 ± 0.4stat | 40.5σ | |||
| DGC |  |
4.9 ± 1.0stat | ||||
| 2 | G0.9+0.1 | l = 0.86°, b = 0.07° | 0.89 ± 0.04stat | 81.8/2 | 1.04 | |
| HESS J1745−290 | l = 359.94°, b = −0.05° | 2.92 ± 0.4stat | 8.7σ | |||
| DGC |  |
5.0 ± 1.0stat | ||||
| CC |  |
1.12 ± 0.5stat | ||||
| 3 | G0.9+0.1 | l = 0.86°, b = 0.069° | 0.87 ± 0.04stat | 33/3 | 1.039 | |
| HESS J1745−290 | l = 359.94°, b = −0.05° | 2.9 ± 0.4stat | 5.1σ | |||
| DGC |  |
4.4 ± 1.0stat | ||||
| CC |  |
1.1 ± 0.05stat | ||||
| LSC |  |
2.68 ± 0.6stat | ||||
 |
||||||
| 4 | G0.9+0.1 | l = 0.86°, b = 0.069° | 0.88 ± 0.04stat | 48.5/5 | 1.039 | |
| HESS J1745−290 | l = 359.94°, b = −0.05° | 2.9 ± 0.4stat | 5.9σ | |||
| DGC |  |
4.3 ± 0.9stat | ||||
| CC |  |
1.03 ± 0.05stat | ||||
| LSC |  |
2.68 ± 0.6stat | ||||
 |
||||||
| HESS J1746−285 |  |
 |
0.24 ± 0.03stat | |||
 |
 |
|||||
Notes. The definition and optimisation of the model of the γ-ray sky describing the data is carried out through an iterative (n-step) process, starting with model 0 including the background map normalised to 1, the unresolved large-scale Galatic emission contribution, and the two point sources HESS J1745−290 and G0.9+0.1; then at each step of the fit a new component is added to improve the modelisation of the emission. At each step, a significance map of the residual and a TS map is created, allowing us to search for features that should be included in the model. Details of the more relevant parameter values are given for 4 steps of the fitting process. The 68% confidence intervals of the parameters are also indicated. The significance of the component detections are indicated by the value of ΔTS /d.o.f. and converted into equivalent significances. The CSTAT/d.o.f. goodness of fit is given as an indication of the fit quality improvement at each step of the iterative procedure.
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