Overlay of the ¹³CO(2–1) (only SMA data; contours) and CH₃CN(12–11) K = 4 position-velocity plots along the direction with PA = 68° passing through the HMC. The offset is measured from the phase center, positive toward NE. Contour levels increase from 0.2 in steps of 0.2 Jy/beam for CH₃CN and from 0.1 in steps of 0.1 Jy/beam for ¹²CO. The vertical and horizontal solid lines denote the position of the continuum peak and the systemic velocity, respectively. The thick dashed pattern encompasses the region inside which emission is expected from a disk with radius of 3″ (or 0.11 pc) undergoing free-fall and Keplerian rotation about 330 M_⊙. The cross in the bottom left denotes the angular and spectral resolutions.