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Table 2

Stellar parameters used to calculate the line driving of the stellar winds.

WR O star
Parameter Value Reference Value Reference

Spectral Type WN7 1 O9V 2
M (M) 72 3 25.7 3
R (R) 20 4 11 4
Teff (K) 44 700 5 33 000 6
L (106   L) 1.44  − 0.13  −
k 0.42  − 0.30  −
α 0.47  − 0.52  −
(M   yr-1) 1.6 × 10-5 4 2.8 × 10-7 7
v(km   s-1) 1785 8 2100 7

Notes. k and α are the CAK line driving parameters.

References. References are as follows: 1 = van der Hucht et al. (1981), 2 = Schweickhardt et al. (1999), 3 = Rauw et al. (1996), 4 = Rauw (1997), 5 = Hamann et al. (2006), 6 = Martins et al. (2005), 7 = Vink et al. (2001), 8 = Crowther et al. (1995b).

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