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Table 3
Derived parameters from the spectral analysis of AB 6.
| Parameter | Star A | Star B | Star C | Star D |
|---|---|---|---|---|
| Spectral type | WN3:h | O5.5 V | O5.5 I(f) | O7.5 V |
| T* [kK] |  |
41.5±1.0 | 37±2 | 33±1 |
| log g (cm s−2) | – | 4.0±0.3 | 3.6±0.2 | 4.0±0.3 |
| log L [L⊙] | 5.87±0.15 | 5.65±0.10 | 5.75±0.10 | 4.88±0.05 |
| log Rt [R⊙] |  |
– | – | – |
| Mspec [M⊙] | – |  |
 |
 |
| v∞ [km s−1] | 2000±100 | 2000±300 | 2000±200 | 2000 |
| R* [R⊙] |  |
13±2 |  |
8.4±1.0 |
| log Ṁ [M⊙ yr−1] | −5.2±0.2 | −6.8±0.5 | −6.3±0.3 | −9.4 |
| veq sin i [km s−1] | <100 | 210±10 | 90±20 | ≤3 |
| vmac [km s−1] | – | 20 | 40 | ≤3 |
| ξph [km s−1] | 100 | 20 | 20 | ≤3 |
| veq [km s−1] | <130 | 265±30a | – | – |
| XH (m.f.b) | 0.25±0.05 | 0.73 | 0.73 | 0.73 |
| XC∕10−4 (m.f.) | 0.3±0.2 | 2.1 | 0.2 ±0.1 | 2.1 |
| XN∕10−4 (m.f.) | 80±20 | 0.33 | 20 ±10 | 0.33 |
| XO∕10−4 (m.f.) | ≲0.1 | 11.3 | 11.3 | 11.3 |
| MV,John [mag] | −4.3±0.4 | −5.8±0.2 | −6.0±0.2 | −4.36±0.10 |
| fV∕fV,tot | 0.09 | 0.36 | 0.45 | 0.10 |
| log QH [s−1] | 49.8±0.2 | 49.1±0.1 | 49.4±0.1 | 48.2±0.1 |
| EB−V [mag] | 0.08±0.01 | |||
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