Open Access
Table 1.
Orbital parameters for the HD 98800 AaAb and BaBb binaries.
| BaBb | AaAb | |||
|---|---|---|---|---|
| Orbital parameters | SZF21 | This work | SZF21 | This work |
| Fitted parameters | ||||
| Period (d) | 314.86 ± 0.02 | 314.87848 ± 0.00015 | 264.51 ± 0.02 | 264.507 ± 0.020 |
| T0 (MJD) | 48707.5 ± 0.2 | 48708.70 ± 0.21 | 48742.5 ± 0.8 | 48742.46 ± 0.79 |
| e | 0.805 ± 0.005 | 0.7819 ± 0.0049 | 0.4808 ± 0.0008 | 0.48082 ± 0.00085 |
| ω (°) | 104.5 ± 0.3 | 104.86 ± 0.34 | 68.7 ± 0.1 | 68.70 ± 0.10 |
| Ω (°) | 342.7 ± 0.4 | 344.02 ± 0.32 | 170.2 ± 0.1 | 170.17 ± 0.15 |
| i (°) | 66.3 ± 0.5 | 65.43 ± 0.31 | 135.6 ± 0.1 | 135.59 ± 0.12 |
| a (mas) | 22.2 ± 0.4 | 22.04 ± 0.23 | 19.03 ± 0.01 | 19.036 ± 0.015 |
| K1 (km s−1) | 24.0 ± 0.3 | 22.63 ± 0.29 | 6.7 ± 0.2 | 6.79 ± 0.14 |
| K2 (km s−1) | 29.9 ± 0.6 | 28.11 ± 0.38 | ... | ... |
| γTO95 (km s−1) | 5.6 ± 0.1 | 5.65 ± 0.14 | 12.8 ± 0.1 | 12.840 ± 0.098 |
| γELODIE (km s−1) | 3.4 ± 0.7 | 3.85 ± 0.40 | 12.1 ± 0.5 | 12.09 ± 0.46 |
| γCTIO (km s−1) | 6.4 ± 0.4 | 6.61 ± 0.29 | 11.9 ± 0.2 | 11.86 ± 0.18 |
| γFEROS (km s−1) | ... | ... | 14.3 ± 0.3 | 14.33 ± 0.31 |
| γFEROS2 (km s−1) | ... | ... | 12 ± 1 | 11.9 ± 1.1 |
| γMercator (km s−1) | ... | 4.73 ± 0.27 | ... | 12.86 ± 0.17 |
| γHARPS (km s−1) | ... | 7.06 ± 0.50 | ... | 11.83 ± 0.77 |
| γNIRPS (km s−1) | ... | 7.080 ± 0.097 | ... | 11.54 ± 0.68 |
| fK, Bb/fK, Ba | 0.76 ± 0.08 | 0.65 ± 0.10 | ... | ... |
| Derived parameters | ||||
| π (mas) | 22.0 ± 0.6 | 21.90 ± 0.35 | 22.0 ± 0.6 | 21.90 ± 0.35 |
| M1 (M⊙) | 0.77 ± 0.04 | 0.760 ± 0.020 | 0.93 ± 0.09 | 0.956 ± 0.059 |
| M2 (M⊙) | 0.62 ± 0.02 | 0.612 ± 0.013 | 0.29 ± 0.02 | 0.298 ± 0.013 |
| d (pc) | 45 ± 1 | 45.66 ± 0.71 | ... | 45.66 ± 0.71 |
| a (au) | 1.01 ± 0.01 | 1.0064 ± 0.0075 | 0.86 ± 0.02 | 0.870 ± 0.016 |
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