Top: integrated spectrum of CO J = 6–5 with the spectral regions used to make the figure in the bottom panel marked. A dashed line in the spectrum indicates the 1σ level of the noise above zero intensity. The spectrum is referenced to the barycentric reference frame using z = 0.012999. Bottom: integrated intensity maps over the channels marked in the spectrum from the top panel overlaid on the 690 GHz continuum grayscale image. Contours are given at 1,2,4,8 × 3σ for the wing emission. The fitted beam (0.22″ × 0.20″, PA ~ −35°) is shown in the lower left corner.