Absorption at the center of the Hα line (at V = 0, black circles) and at the distant wing (V = 80 km s⁻¹, white circles), manually restricted by calculation within region R_p < r < R_max around the planet, in dependence on R_max. The vertical dashed lines show the region of formation of the corresponding absorption at V = 0 at the level of 0.5 to 0.9 of the maximum value. The gray curve shows the pressure in the atmosphere at the corresponding altitudes.