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Table 2
Parameters for a thick disc of shape A.
| Parameter | Min | Max | Best | StDev |
|
|
||||
| Halo | ||||
| exponent | 2.2 | 4.5 | 3.36 | 0.02 |
| axis ratio | 0.3 | 1.2 | 0.757 | 0.007 |
| normalisation | 0. | 5. | 2.82 | 0.04 |
|
|
||||
| Thick disc | ||||
| scale height (pc) | 450 | 1300 | 535.2 | 4.6 |
| normalisation | 0. | 3. | 1.647 | 0.059 |
| IMF slope | –1 | 1 | –0.22 | 0.05 |
| scale length (pc) | 1500 | 5000 | 2362. | 25. |
| ξ (pc) | 100 | 1500 | 662.8 | 10.4 |
| flare start radius (pc) | 7000 | 20 000 | 9261. | 324. |
| flare slope (pc/kpc) | –0.3 | 0.3 | 0.1310 | 0.069 |
| Lr | –64 485. | 484. | ||
| BIC | 129 056.4 | |||
Notes. Fitted model parameters, range explored, best likelihood value, and estimate of the standard deviation for the thick disc of shape A, an age of 12 Gyr, and a metallicity z = 0.003.
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