Phased time series spectra around H_α line folded with the orbital period of the system and corresponding Doppler maps. The orbital period of P_orb = 84.1 days, the primary mass of M₁ = 14.0  M_⊙, and the mass ratio of q = 0.16 are used to overlay positions of the stellar components on the Doppler maps. The inclination angle i = 70° is arbitrarily chosen based on suggestions by Bjorkman et al. (2002). φ_orb = 0.0 corresponds to the inferior conjunction of the secondary.