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Table 2
Parameters of the WR 146 system for the primary (sub-index 1) and the secondary (sub-index 2).
| Parameter | Value | Unit |
|
|
||
| Primary spectral type | WC6 | |
| Secondary spectral type | O8 | |
| Distance | d = 1.2 | kpc |
| System separation | Dproj = 160 | mas |
| Inclination of the orbit | i = 30 | ° |
| Period | P = 3.38 | yr |
| Wind momentum ratio | η = 0.1 | |
|
|
||
| Teff1 | 49 000 | K |
| R1 | 1.5 | R⊙ |
| v∞1 (primary) | 2900 | km s-1 |
|
5.5 × 10-5 | M⊙ yr-1 |
| Vrot1/v∞1 | ~ 0.1 | |
| μ w1 | 5.29 | |
| T w1 | 8000 | K |
|
|
||
| T eff2 | 32 000 | K |
| R 2 | 10 | R ⊙ |
| v∞2 (secondary) | 1600 | km s-1 |
|
8 × 10-6 | M⊙ yr-1 |
| Vrot2/v∞2 | ~0.1 | |
| μw2 | 1.4 | |
| Tw2 | 0.4Teff2 | K |
Notes.μ is the mean atomic weight and v∞ is the wind terminal velocity. For further information on these system parameters, refer to Setia Gunawan et al. (2000) and Dougherty & Williams (2000).
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