Table A.2.
Parameters of the Be star and its Keplerian disk derived from GRAVITY data.
| Date | HJDmean | vorb sin idisk | RVBe, bary | idisk | PAdisk | EWBrγ,disk | FWHMBrγ,disk |
|---|---|---|---|---|---|---|---|
| -2400000 | [mas] | [km s−1] | [°] | [°] | [nm] | [mas] | |
| 2021 Sep 05 | 59463.625 | 243.2 ± 5.7 | −21 ± 21 | 25.67 ± 0.31 | 17.4 ± 5.8 | 0.7664 ± 0.0025 | 0.455 ± 0.025 |
| 2021 Sep 18 | 59476.538 | 256.9 ± 5.9 | 15 ± 12 | 39.8 ± 1.1 | 27.4 ± 2.2 | 0.7142 ± 0.0015 | 0.516 ± 0.025 |
| 2022 May 06 | 59706.711 | 257.4 ± 5.7 | −3 ± 12 | 36.8 ± 1.9 | 30.5 ± 2.4 | 0.790 ± 0.011 | 0.488 ± 0.020 |
| 2023 Apr 23 | 60058.760 | 230.0 ± 5.2 | 8 ± 12 | 38.1 ± 2.0 | 38.0 ± 3.2 | 0.6294 ± 0.0071 | 0.479 ± 0.021 |
| 2023 May 01 | 60066.747 | 243 ± 19 | 4 ± 12 | 39.4 a | 11.2 ± 7.8 | 0.5573 ± 0.0012 | 0.534 ± 0.087 |
| 2023 May 20 | 60085.861 | 241.5 ± 4.3 | 23 ± 12 | 32.2 ± 1.1 | 24.1 ± 1.1 | 0.6292 ± 0.0067 | 0.530 ± 0.017 |
| 2023 Jun 20 | 60116.635 | 294.8 ± 7.9 | 14 ± 12 | 36.39 ± 0.36 | 61.0 ± 5.7 | 0.7172 ± 0.0005 | 0.684 ± 0.036 |
| 2023 Jul 17 | 60143.570 | 238.7 ± 2.4 | 9 ± 12 | 24.85 ± 0.53 | 27.4 ± 3.5 | 0.8209 ± 0.0090 | 0.448 ± 0.011 |
| 2023 Aug 16 | 60173.624 | 236.5 ± 4.7 | 13 ± 12 | 34.1 ± 1.4 | 28.5 ± 1.9 | 0.7323 ± 0.0069 | 0.493 ± 0.025 |
| 2023 Aug 20 | 60177.572 | 249.9 ± 8.2 | 6 ± 12 | 31.0 ± 1.4 | 35.9 ± 2.4 | 0.7608 ± 0.0086 | 0.523 ± 0.037 |
| 2023 Sep 07 | 60195.505 | 234.6 ± 4.6 | 7 ± 12 | 21.9 ± 1.1 | 28.2 ± 1.8 | 0.979 ± 0.020 | 0.451 ± 0.025 |
| 2023 Sep 08 | 60196.598 | 244 ± 12 | 17 ± 12 | 20.43 ± 0.75 | 27.3 ± 1.7 | 0.920 ± 0.011 | 0.420 ± 0.045 |
Notes. vorb sin idisk is the orbital velocity at the base of the Keplerian disk multiplied by the sine of the disk inclination, RVBe, bary is the barycentric RV of the Be star, idisk is the inclination of the circumstellar disk of the Be star, PAdisk is the position angle of the Be star disk measured from north to east, EWBrγ,disk is the equivalent width of the Brγ emission line originating from the Be star disk, and FWHMBrγ,disk is the full width at half-maximum of the Gaussian representing the geometrical extent of Brγ line-emitting region of the Be star disk.
idisk was not converging properly for this epoch (which lacks |V| data) and was therefore fixed at the orbital inclination taken from the eccentric solutions (Table 3).
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