N₂H⁺p − v plot for the F₁F = 01 → 12 hyperfine at a) PA  =  90° (along the eastern and western cores). Channel maps have been convolved with a beam 6′′ × 2′′ with PA perpendicular to the direction of the cut. Contours start at 10%, increasing in steps of 5% of the peak emission, 0.408 Jy   beam^-1. The central position corresponds to the 3.2 mm source. Positive offsets are toward the east; b) PA  = 15°. Channel maps have been convolved with a beam 2′′ × 2′′. Contours start at 10%, increasing in steps of 10% of the peak emission, 0.601 Jy   beam^-1. The central position is taken at the peak position of the western core, which is Δ   x =  −6.5′′, Δ   y =  −3′′ offset from the phase center. Positive offsets are toward the northeast. c) PA = 140°. Contours start at 20%, and increase in steps of 10% of the peak emission, 0.376 Jy   beam^-1. Positive offsets are toward the southeast. The central position corresponds to Δ   x = 3.9′′, Δ   y =  −0.59′′ offset from the phase center. In all panels, the vertical dashed line indicates the systemic velocity, v_LSR= −3 km s^-1.