Table 2
Comparison of the different spatial models used to represent the emission from the SMC.
| Name | Composition | Position | ΔTS | Parameters | Flux | TS | Significance |
|
|
|||||||
| 3PS | point source 1 (PS1) | (301.7°, −44.4°) | 98.2 | 4 | 0.93 ± 0.26 | 130.4 | 9.6 |
| point source 2 (PS2) | (303.4°, −43.6°) | 21.0 | 4 | 0.44 ± 0.22 | |||
| point source 3 (PS3) | (302.1°, −45.4°) | 11.2 | 4 | 0.31 ± 0.19 | |||
| 2DG | 2D Gaussian with σ = 0.9° | (302.1°, −44.4°) | − | 5 | 2.11 ± 0.24 | 136.6 | 10.9 |
| H I | H I column density map | – | – | 2 | 2.13 ± 0.25 | 120.8 | 10.7 |
| Hα | Hα map | – | – | 2 | 1.94 ± 0.24 | 114.4 | 10.4 |
| PS1+ H I | PS1 | (301.7°, –44.4°) | 98.2 | 4 | 0.46 ± 0.27 | 135.2 | 10.7 |
| H I column density map | – | 37.0 | 2 | 1.65 ± 0.42 | |||
| PS1+ Hα | PS1 | (301.7°, –44.4°) | 98.2 | 4 | 0.41 ± 0.18 | 128.0 | 10.4 |
| Hα map | – | 29.8 | 2 | 1.47 ± 0.27 | |||
| PS1+ Gaussian | PS1 | (301.7°, –44.4°) | 98.2 | 4 | 0.39 ± 0.25 | 138.8 | 10.4 |
| 2D Gaussian with σ = 1.0° | (302.3°, −44.3°) | 40.6 | 5 | 1.71 ± 0.37 | |||
Notes. From left to right, table columns are the name of the spatial model, the description of its components, the position in Galactic longitudes and latitudes of the point source and 2D Gaussian models, the TS increase due to each component, the number of degrees of freedom for each component, the flux in each component in units of 10-8 ph cm-2 s-1 for photons in the 200 MeV−20 GeV range (with statistical uncertainties only), the total TS of the model, and its significance in σ. The H I column density map and the Hα map are from Stanimirovic et al. (1999) and Finkbeiner (2003), respectively (see text).
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