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Table 2

Adopted parameters and predicted thermal free-free flux densities for the two targets.

HD 167971 HD168112

Component Aa Ab B A B
Spectral type O6–7V O6–7V O8I O5.5III O5.5–O7.5III
1.2 × 10−7 1.2 × 10−7 6.6 × 10−7 1.13 × 10−6 4.8 × 10−7
υ (km s−1) 3000 3000 2800 2500 2400
Teff (K) 36 800 36800 31 000 38 000 35 600
S1.67 GHz (mJy) <0.001 <0.001 0.006 0.015 0.005

Notes. Stellar wind parameters are taken from Muijres et al. (2012). Terminal velocities are estimated as 2.6 times the escape velocity. For components with uncertain spectral types, interpolated values have been adopted.

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