Intensity maps for pairs of LOS-velocities, V_z = ±0.8 km s⁻¹ (top), ± 1.1 km s⁻¹ (middle), and ± 1.4 km s⁻¹ (bottom), calculated for a a mass M_* = 1 M_⊙, a distance of 140 pc, and a beam of 0.′′1. The axes are position offsets labeled in arcsec. The intensity scale is the same for all maps. We note the sharp peak at the center of the blueshifted LOS-velocity maps (left), and the flat, slightly concave shape of the redshifted LOS-velocity maps (right), and the more compact emission for high values |V_z | (bottom) than for low values of |V_z| (top).