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Table 3.
System parameters of CWBs.
| η Carinae ( + ) | γ2 Vel ( ⋆ ) | HD 93129A (⋄) | |
|---|---|---|---|
| Porb (days) | 2022.7 ± 1.3 | 78.53 ± 0.01 |  yr |
| T0 | 2020.11 | 50120.4 ± 0.4 MJD |  |
| e | 0.9–0.95 | 0.334 ± 0.003 |  |
| ω (°) | 240–285 | 67.4 ± 0.5 |  |
| i (°) | 130–145 | 65.5 ± 0.4 |  |
| d (kpc) | 2.3 |  |
 ( * *) |
| Star A | eta Car A | WR11 | HD 93129Aa |
| spectral type | LBV | WC8 | O2 If* |
| M⋆ (M⊙) | 90 | 9.0 ± 0.6 | 60–110 |
| R⋆ (R⊙) | 60–100 | 6 ± 3 | 18.3 |
| L⋆ (105 L⊙) | 50 | 1.7 | 25 |
| Ṁ (10−6 M⊙ yr−1) | 250–1000 | 8 ± 4 | 10 |
| V∞ (km s−1) | 500 | 1550 ± 150 | 3200 |
| Star B | eta Car B | HD 93129Ab | |
| Spectral type | (WR/O) | O7.5 | O3.5 V |
| M⋆ (M⊙) | 30 | 28.5 ± 1.1 | 30–70 |
| R⋆ (R⊙) | 14.3–23.6 | 17 ± 2 | 13.1 |
| L⋆ (105 L⊙) | 10 | 2.8 | 55 |
| Ṁ (10−6 M⊙ yr−1) | 10–15 | 0.18 ± 0.04 | 5.3 |
| V∞ (km s−1) | 3000 | 2500 ± 250 | 3000 |
| dperiastron (R⊙) | 331 | 172 | 870 |
| dapastron (R⊙) | 3642 | 344 | |
| IRF: | South_z40 | South_z40 | South_z40 |
Notes. ( * *)The Gaia archive, https://gea.esac.esa.int/archive/
References. ( + )See references in the text. ( ⋆ )Schmutz et al. (1997), De Marco & Schmutz (1999), North et al. (2007). (⋄)del Palacio et al. (2016, 2017); Maíz Apellániz et al. (2017).
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