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Table 4.
Parameters determined from the spectroscopic analysis for the SB2 systems. The ξT denotes the microturbulence velocity.
| Parameter | System | ||||
|---|---|---|---|---|---|
| HD 57236 | HD 93028 | HD 101413 | HD 151003 | HD 153426 | |
| Primary | |||||
| Sp. Type | O8 Vz | O9 IV | O8 V | O8 III | O8.5 III |
| v sin i [km s−1] | 27.3 ± 1.3 | 29 ± 2 | 83 ± 10 | 69 ± 5 | 92 ± 5 |
| vmac [km s−1] | 47.6 ± 1.3 | 48 ± 2 | 60 ± 10 | 69 ± 5 | 65 ± 5 |
| Teff [K] | 36300 ± 800 | 33900 ± 300 | 36500 ± 1500 | 34500 ± 800 | 34800 ± 600 |
| log g [dex] | 3.78 ± 0.13 | 3.60 ± 0.03 | 3.76 ± 0.25 | 3.50 ± 0.13 | 3.53 ± 0.11 |
| ξT [km s−1] | 8.2 ± 1.7 | 9.6 ± 1.9 | > 30.0 | > 30.0 | 26.4 ± 2.8 |
| MV [mag] | −4.58 | −4.35 | −4.33 | −5.00 | −4.78 |
| R [R⊙] | 9.0 ± 0.1 | 8.5 ± 0.1 | 8.1 ± 0.2 | 11.4 ± 0.2 | 10.2 ± 0.2 |
| log (L/L⊙) [dex] | 5.10 ± 0.02 | 4.93 ± 0.02 | 5.02 ± 0.04 | 5.21 ± 0.03 | 5.14 ± 0.02 |
| Msp [M⊙] | 18.7 ± 4.9 | 10.4 ± 1.8 | 16.4 ± 6.7 | 16.1 ± 4.1 | 13.9 ± 3.9 |
| Secondary | |||||
| Sp. Type | O9.5–O9.7 V(n) | early B1.5–B2 V | early B | late-O III | early B |
| v sin i [km s−1] | 225 ± 12 | 153 ± 8 | ∼ 300 | 255 ± 50 | 217± 12 |
| vmac [km s−1] | 57 ± 12 | 45 ± 8 | ∼ 100 | < 40 | 100 ± 12 |
| Teff [K] | 33600 ± 2000 | 28000-30000 | 28000–30000 | 33000–35000 | ∼ 30000 |
| log g [dex] | 3.80 – 4.00 (3.9) | 3.90 – 4.00 (3.95) | 3.9 – 4.0 (3.95) | 3.80 – 4.00 (3.90) | ∼ 4.0 |
| ξT [km s−1] | > 14.2 | 5.0 – 19.9 | – | – | – |
| MV [mag] | −4.00 | −2.94 | – | – | – |
| R [R⊙] | < 7.6 | 5.0 – 5.4 | – | – | – |
| log (L/L⊙) [dex] | < 4.71 | 4.20 – 4.26 | – | – | – |
| Msp [M⊙] | < 20.9 | 7.2 – 10.5 | – | – | – |
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