Open Access
Table D.2
PIONIER (2017 April) best-fit parameters of the parametric models.
| GAUSSIAN MODEL | ||||||
|---|---|---|---|---|---|---|
| Wavelengths [microns] | 1.518 | 1.567 | 1.617 | 1.67 | 1.72 | 1.763 |
| ΘFWHM [mas] | 1.8 ± 0.1 | 1.85 ± 0.1 | 1.84 ± 0.13 | 2.1 ± 0.12 | 2.04 ± 0.15 | 2.05 ± 0.15 |
| Fs | 0.29 ± 0.02 | 0.26 ± 0.03 | 0.23 ± 0.03 | 0.24 ± 0.03 | 0.20 ± 0.03 | 0.20 ± 0.03 |
| Fc | 0.53 ± 0.01 | 0.56 ± 0.02 | 0.56 ± 0.02 | 0.56 ± 0.02 | 0.60 ± 0.03 | 0.60 ± 0.02 |
| Fh | 0.18 ± 0.01 | 0.18 ± 0.01 | 0.20 ± 0.01 | 0.20 ± 0.02 | 0.20 ± 0.009 | 0.20 ± 0.02 |
| PA [deg] | 142.7 ± 1.4 | 143.0 ± 1.2 | 144.9 ± 1.6 | 142.6 ± 1.7 | 142.5± 2.2 | 142.5 ± 2.2 |
| i [deg] | 49.9 ± 0.8 | 50.6 ± 0.7 | 51.1 ± 0.9 | 50.5 ± 0.8 | 49.8 ± 1.1 | 49.8 ± 1.1 |
| Δx [mas] | 0.20 ± 0.03 | 0.17 ± 0.04 | 0.12 ± 0.04 | 0.02 ± 0.04 | 0.03 ± 0.05 | 0.03 ± 0.05 |
| Δy [mas] | -0.35 ± 0.06 | -0.42 ± 0.06 | -0.38 ± 0.08 | -0.17 ± 0.06 | -0.23 ± 0.08 | -0.23 ± 0.08 |
| χ2 | 1.1 | 1.6 | 2.6 | 3.3 | 4.4 | 4.4 |
| RECONSTRUCTED IMAGES | ||||||
| Wavelengths [microns] | 1.518 | 1.567 | 1.617 | 1.67 | 1.72 | 1.763 |
| Hyper-parameter (α) | 146 | 231 | 203 | 199 | 204 | 188 |
| Iterations | 93 | 122 | 89 | 82 | 88 | 86 |
| χ2 | 0.97 | 1.01 | 1.02 | 1.01 | 0.99 | 1.00 |
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