Channel maps showing the HCO⁺ J = 4−3 spectral channels at 103 m s^-1 resolution between +6 and −6 km s^-1 around the systemic velocity. In the top right corner of each panel we note the v_lsr in white with the velocity with respect to the systemic velocity of 4.75 km s^-1 in parenthesis. The clean beam is shown in orange in the bottom left corner of each panel. The continuum contours are plotted in white.