for all models from our grid, as a function of velocity. Left: dwarf models; right: supergiant models. Black: results from  FASTWIND v11, green: results from  CMFGEN. To allow for a clear representation, all Γ-values have been multiplied with factors 10ⁱ, i ∈ [0, 4], from bottom to top. The red dashed-dotted lines correspond to Γ_e ∝ T_eff ⁴∕g for pure electron scattering, and the dashed lines indicate, for each model, the relation Γ_tot = 1. For self-consistent models, Γ_tot = 1 should be located very close to the sonic point. See text.