Open Access
Table D.3
PIONIER (2017 August) 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] | 1.23 ± 0.07 | 1.3 ± 0.06 | 1.3 ± 0.05 | 1.3 ± 0.05 | 1.36 ± 0.05 | 1.33 ± 0.06 |
| Fs | 0.27 ± 0.01 | 0.25 ± 0.01 | 0.21 ± 0.01 | 0.19 ± 0.01 | 0.18 ± 0.009 | 0.19 ± 0.007 |
| Fc | 0.49 ± 0.02 | 0.52 ± 0.01 | 0.55 ± 0.01 | 0.55 ± 0.02 | 0.56 ± 0.01 | 0.64 ± 0.006 |
| Fh | 0.24 ± 0.02 | 0.23 ± 0.01 | 0.24 ± 0.01 | 0.26 ± 0.02 | 0.26 ± 0.01 | 0.17 ± 0.008 |
| PA [deg] | 141.0 ± 1.9 | 142.1 ± 1.4 | 140.8 ± 1.3 | 140.1 ± 1.4 | 141.9± 1.4 | 138.3 ± 0.6 |
| i [deg] | 59.8 ± 1.3 | 59.1 ± 1.0 | 58.5 ± 0.8 | 58.4 ± 0.9 | 58.5 ± 0.9 | 52.2 ± 0.3 |
| Δx [mas] | 0.05 ± 0.03 | 0.06 ± 0.02 | 0.12 ± 0.02 | 0.13 ± 0.03 | 0.19 ± 0.02 | 0.01 ± 0.02 |
| Δy [mas] | -0.24 ± 0.1 | -0.27 ± 0.08 | -0.25 ± 0.08 | -0.23 ± 0.1 | -0.4 ± 0.08 | 0.29 ± 0.03 |
| χ2 | 2.5 | 2.5 | 3.7 | 5.3 | 3.0 | 2.7 |
| RECONSTRUCTED IMAGES | ||||||
| Wavelengths [microns] | 1.518 | 1.567 | 1.617 | 1.67 | 1.72 | 1.763 |
| Hyper-parameter (α) | 166 | 222 | 198 | 194 | 213 | 180 |
| Iterations | 97 | 122 | 127 | 131 | 111 | 127 |
| χ2 | 1.01 | 1.01 | 1.0 | 1.02 | 1.02 | 0.99 |
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