Table 1
Parameters of the system HD 93129A for the primary (sub-index 1) and the secondary (sub-index 2).
| Parameter | Value | Unit |
|
|
||
| Primary spectral type | O2 If* a | |
| Secondary spectral type | O3.5 V b | |
| System mass | 200 ± 45 c | M⊙ |
| Distance | d = 2.3 d | kpc |
| System separation (2008) | Dproj = 36 e | mas |
| System bolometric luminosity | Lbol = 6 × 1039 f | erg s-1 |
| Period | P> 50 e | yr |
| Wind momentum ratio | η = 0.5 e | |
|
|
||
| Teff1 | 42 500 f | K |
| R1 | 18.3 g | R⊙ |
| v∞1 (Primary) | 3200 h | km s-1 |
|
M⊙ yr-1 | |
| Vrot1/v∞1 | ~0.1 i | km s-1 |
|
|
||
| Teff2 | 44 000 g | K |
| R2 | 13.1 g | R⊙ |
| v∞2 (Secondary) | 3000 j | km s-1 |
|
5.3 × 10-6 † | M⊙ yr-1 |
| Vrot2/v∞2 | ~0.1 i | km s-1 |
Notes.
In this work we assumed a conservative value between those inferred from radio (Benaglia et al. 2015) and X-ray (Cohen et al. 2011) observations, consistent with a volume-filling factor of the wind f = 0.07 (see text).
Reference.
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