438 μm continuum image with CO(6–5) red-shifted emission in red contours. The continuum contours are in 4σ steps (1σ = 7 mJy beam^-1). The blue dotted contours show the corresponding negative features. The CO emission was integrated from 25 to 42 km s^-1 and is shown in contours from 15 to 95% (step 10%) of the peak emission. The center coordinates are those of the phase center presented in Sect. 2.