CO 6−5 moment maps. Top: integrated intensity (mom0) where contours are 0.6 × (1, 4, 7, 10, 13, 16, 19, 22, 25) Jy km s-1 beam-1. Colours range from 0 to 15 Jy km s-1 beam-1. The dashed line marks the orientation of the molecular jet (see text for details). Centre: velocity field (mom1) where contours (and colours) range from 1700 km s-1 to 1820 km s-1 in steps of 10 km s-1. Bottom: map of the one-dimensional velocity dispersion (mom2), i.e. the FWHM line width of the spectrum divided by 2.35 for a Gaussian line profile. Contours are 4.4 × (1, 3, 5, 7, 9, 11, 13) km s-1 and colours range from 0 to 60 km s-1. The cross indicates the position of the 345 GHz continuum peak (Aalto et al. 2016). How the moment maps were constructed is described in Sect. 3.
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