Top: residual surface horizontal velocity field, Δv_AZ, on the hemisphere that would be seen by an observer around the time of conjunction when m₂ is in front of m₁ for the R₁ = 7.6 R_⊙, e = 0.1 calculation and for the epoch 2000, when ω_per = 233°. From right to left: half a day before conjunction (φ = 0.494), at conjunction (φ = 0.619) and half a day after (φ = 0.750). The maps are centered, respectively, on longitudes ϕ = 45°, 0°, 315°. The sub-binary longitude is shown by the white dotted line that crosses the dark patch. The sense of rotation is such that the left limb is approaching the observer; i.e., rotation is counterclockwise when viewed from the north pole, and so is the orbital motion. Darkest patches correspond to tidal flows with Δv_AZ< 0 and lightest patches to Δv_AZ> 0. Middle: Δv_AZ along the equator corresponding to the maps above. The ordinate is in units of km s^-1. The tick marks in the abscissa are set at 45° intervals with the central longitude indicated with the dotted line. Bottom: corresponding line profiles compared with the non-perturbed line profiles (dash). The dotted line indicates the zero velocity and the ticks are separated by 100 km s^-1. BS and RS indicate the blue and red spikes.