Table 2
Fit parameters to the PHOENIX model and to the best snapshots from 3D RHD simulations, for each epoch.
| Model | Epoch | Channel (μm) | Θ1 (mas) | f1 (%) | ΘUD (mas) | fUD (%) | ffree (%) |
|---|---|---|---|---|---|---|---|
| PHOENIX | 2016 | 1.53 | 4.4 ± 0.2 | 84.9 | 6.4 ± 0.2 | 12.3 | 2.8 |
| 1.58 | 4.4 ± 0.2 | 86.6 | 6.3 ± 0.2 | 10.8 | 2.6 | ||
| 1.63 | 4.4 ± 0.2 | 88.3 | 6.1 ± 0.2 | 8.4 | 3.3 | ||
| 1.68 | 4.5 ± 0.2 | 94.2 | 12.3 ± 0.2 | 5.4 | 0.4 | ||
| 1.72 | 4.4 ± 0.2 | 89.5 | 8.2 ± 0.2 | 9.8 | 0.7 | ||
| 1.77 | 4.5 ± 0.2 | 88.7 | 8.3 ± 0.2 | 10.6 | 0.7 | ||
| Average | 4.4 ± 0.2 | 88.7 ± 3.2 | 7.9 ± 2.3 | 9.5 ± 2.4 | 1.0 ± 1.2 | ||
| PHOENIX | 2019 | 1.53 | 4.5 ± 0.2 | 93.0 | 11.1 ± 0.2 | 7.2 | 0.0 |
| 1.58 | 4.6 ± 0.2 | 94.2 | 11.7 ± 0.2 | 6.0 | 0.0 | ||
| 1.63 | 4.5 ± 0.2 | 91.2 | 6.7 ± 0.2 | 6.5 | 2.2 | ||
| 1.68 | 4.5 ± 0.2 | 90.5 | 6.3 ± 0.2 | 7.5 | 2.0 | ||
| 1.72 | 4.4 ± 0.2 | 82.7 | 5.7 ± 0.2 | 16.0 | 1.3 | ||
| 1.77 | 4.4 ± 0.2 | 80.8 | 6.2 ± 0.2 | 17.4 | 1.8 | ||
| Average | 4.5 ± 0.2 | 88.8 ± 5.7 | 8.0 ± 2.7 | 10.1 ± 0.5 | 1.1 ± 1.0 | ||
| 3D RHD 065 | 2016 | 1.53 | 4.1 ± 0.2 | 79.3 | 6.0 ± 0.2 | 17.9 | 2.8 |
| 1.58 | 4.1 ± 0.2 | 82.2 | 6.1 ± 0.2 | 15.3 | 2.5 | ||
| 1.63 | 4.2 ± 0.2 | 84.2 | 6.1 ± 0.2 | 12.8 | 3.0 | ||
| 1.68 | 4.2 ± 0.2 | 88.2 | 7.2 ± 0.2 | 10.1 | 1.7 | ||
| 1.72 | 4.2 ± 0.2 | 87.8 | 7.9 ± 0.2 | 11.5 | 0.7 | ||
| 1.77 | 4.2 ± 0.2 | 86.7 | 7.9 ± 0.2 | 12.5 | 0.8 | ||
| Average | 4.2 ± 0.2 | 84.7 ± 3.5 | 6.9 ± 0.9 | 13.4 ± 2.8 | 1.9 ± 1.0 | ||
| 3D RHD 067 | 2019 | 1.53 | 4.2 ± 0.2 | 86.3 | 5.9 ± 0.2 | 10.8 | 2.9 |
| 1.58 | 4.3 ± 0.2 | 88.7 | 6.0 ± 0.2 | 8.9 | 2.4 | ||
| 1.63 | 4.3 ± 0.2 | 89.7 | 6.7 ± 0.2 | 8.7 | 1.6 | ||
| 1.68 | 4.3 ± 0.2 | 88.8 | 6.3 ± 0.2 | 9.3 | 1.9 | ||
| 1.72 | 4.2 ± 0.2 | 76.4 | 5.5 ± 0.2 | 22.3 | 1.3 | ||
| 1.77 | 4.2 ± 0.2 | 77.4 | 6.0 ± 0.2 | 21.1 | 1.5 | ||
| Average | 4.2 ± 0.2 | 84.5 ± 6.0 | 6.1 ± 0.4 | 13.5 ± 6.4 | 1.9 ± 0.6 | ||
Notes. Θ1 represents the Rosseland angular diameter in the case of the PHOENIX model, and the layer where r∕Rstar = 1 in the 3D RHD model. ΘUD is the angular diameter of the uniform disk describing the MOLsphere. Finally, f1, fUD, and ffree describe the relative flux of the PHOENIX/3D RHD, MOLsphere, and free zero visibility scale components.
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