Open Access
Table D.4
GRAVITY (2018 July) best-fit parameters of the parametric models.
| GAUSSIAN MODEL | ||||||||
|---|---|---|---|---|---|---|---|---|
| Wavelengths [microns] | 2.016 | 2.069 | 2.122 | 2.175 | 2.228 | 2.281 | 2.333 | 2.386 |
| ΘFWHM [mas] | 2.87 ± 0.06 | 3.03 ± 0.06 | 3.14 ± 0.05 | 3.26 ± 0.06 | 3.27 ± 0.06 | 3.33 ± 0.06 | 3.40 ± 0.06 | 3.49 ± 0.08 |
| Fs | 0.20 ± 0.007 | 0.21 ± 0.007 | 0.20 ± 0.006 | 0.21 ± 0.006 | 0.20 ± 0.007 | 0.19 ± 0.007 | 0.19 ± 0.007 | 0.18 ± 0.009 |
| Fc | 0.60 ± 0.008 | 0.61 ± 0.007 | 0.63 ± 0.006 | 0.63 ± 0.006 | 0.64 ± 0.006 | 0.64 ± 0.006 | 0.64 ± 0.006 | 0.65 ± 0.007 |
| Fh | 0.2 ± 0.01 | 0.18 ± 0.01 | 0.17 ± 0.009 | 0.16 ± 0.008 | 0.16 ± 0.009 | 0.17 ± 0.008 | 0.17 ± 0.008 | 0.16 ± 0.009 |
| PA [deg] | 139.9 ± 0.7 | 139.6 ± 0.6 | 139.2 ± 0.6 | 138.6 ± 0.6 | 137.9± 0.5 | 138.3 ± 0.6 | 138.0 ± 0.5 | 137.3 ± 0.6 |
| i [deg] | 53.3 ± 0.4 | 53.0 ± 0.4 | 52.7 ± 0.3 | 52.3 ± 0.3 | 52.4 ± 0.3 | 52.2 ± 0.3 | 51.6 ± 0.3 | 51.0 ± 0.3 |
| Δx [mas] | 0.03 ± 0.02 | 9e-3 ± 0.02 | -3e-3 ± 0.02 | -0.03 ± 0.01 | -0.03 ± 0.02 | 0.01 ± 0.02 | -0.04 ± 0.02 | -0.04 ± 0.03 |
| Δy [mas] | 0.25 ± 0.03 | 0.28 ± 0.03 | 0.30 ± 0.03 | 0.33 ± 0.02 | 0.35 ± 0.03 | 0.29 ± 0.03 | 0.36 ± 0.04 | 0.37 ± 0.04 |
| χ2 | 2.9 | 8.0 | 11.4 | 5.6 | 4.4 | 5.0 | 5.3 | 3.6 |
| RECONSTRUCTED IMAGES | ||||||||
| Wavelengths [microns] | 2.016 | 2.069 | 2.122 | 2.175 | 2.228 | 2.281 | 2.333 | 2.386 |
| Hyper-parameter (α) | 200 | 201 | 200 | 200 | 201 | 200 | 201 | 199 |
| Iterations | 33 | 42 | 46 | 42 | 39 | 40 | 43 | 37 |
| χ2 | 1.65 | 3.07 | 3.56 | 4.0 | 4.8 | 5.6 | 5.9 | 4.5 |
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