Influence of Ṁ on the sonic-point conditions. The reference sequence (solid blue line) is compared to two test sequences for which the mass-loss rates have been varied by a factor 10 (red dotted lines). Although the models span a factor of 100 in Ṁ the changes with respect to the wind condition Eq. (23) (black dashed line) are moderate. To illustrate the shift in T_⋆, wind models with T_⋆ = 79 kK are indicated by squares and wind models with T_⋆ = 32 kK by triangles.