Integrated-intensity maps of TiO₂ emission. Colour maps show the intensity integrated over the ν_LSR-ranges indicated in Table 2 and Fig. 1 and cut off at 3σ. Contours show the ALMA 321 GHz continuum. Labels indicate the positions of the star (+, VY) and the continuum component (x, C) to the south-east (O+15; R+14), and the position and approximate extent of the south-west clump of Shenoy et al. (2013, SW and a dashed 1′′. The presence of cleaning artefacts, mainly at ~312 GHz, is addressed in Sect. 2.