Left: moment 0 maps (integrated intensity) of the HCN 3−2 line wings in tapered B array. Contour levels are 0.2 × (1,3,5,7,9) Jy beam^-1 km s^-1 and greyscale ranges from 0 to 2 Jy beam^-1 km s^-1. The cross marks the position of the peak HCN 3−2 integrated intensity. Right: pV diagrams of the tapered B array map. Upper: east-west cut along the line of nodes of the main disk rotation. Lower: north-south cut along the minor axis of the main disk rotation. Greyscale ranges from 0 to 120 mJy beam^-1, contours are 3 × (1, 2, 4, 8, 16, 32) mJy beam^-1. First contour is 2σ.