Table 14
Stellar and wind parameters of our current best model – model “A∗” – of the WN5h star R136a3 (cf. Fig. 23).
| Parameter | Model A∗ | |
|
|
||
| Teff | (K) | 44 000 |
| R∗ | (R⊙) | 33.8 |
| log L∗ | (L⊙) | 6.59 |
| M∗ | (M⊙) | 105 |
| vrot | (km s-1) | 200 |
| XH | (%) | 40 |
| XC | (%) | 0.0083 |
| XN | (%) | 0.41 |
| XO | (%) | 0.004 |
| XFea | (%) | 0.043 |
| XNia | (%) | 0.0026 |
| v∞ | (km s-1) | 2240 |
| Ṁ | (10-6 M⊙/yr) | 43.4 |
Notes. The presented parameters have been determined from UV diagnostics based on our consistently calculated atmospheric models. Compared to the values of Crowther et al. (2010) (cf. Table 12) we obtained a lower effective temperature (Teff), a larger radius (R∗), a lower iron and nickel abundance, a larger mass loss rate (Ṁ), and a smaller mass (M∗) of the object, whereas our values of the luminosity (L∗), the rotational velocity (vrot), the terminal velocity (v∞), and the hydrogen mass fraction (XH) are almost identical.
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