Data and best-fit ^3DBAROLO model of AzTEC/C159 at high spectral resolution. Left panel: position-velocity diagram along the kinematic major axis of AzTEC/C159 (see Fig. 1) obtained using the high spectral resolution data cube (Table 3). The [C II] 158-μm emission in the data is in green shades and contours, while the ^3DBAROLO model is in red contours. Contour levels are at −2, 2, 4, and 8 times the rms noise per channel. Centre panel: position-velocity diagram along the kinematic minor axis displayed analogously to the major-axis plot. Right panel: [C II] velocity dispersion obtained from the high spectral resolution data cube.