Column density, per logarithmic radial bin (red, logarithmic axis on the left) and cumulative (blue, linear axis on the right), as a function of the distance to the stellar center. The position of the compact object is indicated with a dashed black line. The total column density up to 30 orbital separations is ~97% of the column density computed for a smooth wind integrated up to thousands of stellar radii. The dimensionless parameters are m_cl = 10⁻⁵, R_cl = 0.08, a = 2, P = 80 and i = 45°.