Analysis of the origin of the observed methanol components. Left panel: methanol intensity contours at 243.916 GHz plotted over the dust continuum map of Alves et al. (2019). The contours show the methanol emission at extreme velocity channels detected at a 3σ level (1er = 1.8 mJy beam⁻¹). The blue and red contours correspond to emission at the −4.89 kms⁻¹ and 13.3 kms⁻¹ velocity channels, respectively. White contours show emission (from a 20σ level) from velocity channels near the systemic velocity of the source (2.91 km s⁻¹). The synthesised beam of the methanol (FAUST) data is shown in the lower left corner. Right panel: position of intensity peaks (circles) from the 2D Gaussian fit in each velocity channels separated by ~0.15 km s⁻¹. Colour code for the edges of the circle: red for the 9.9 km s⁻¹ methanol component, green for the 2.8 km s⁻¹ methanol component, and blue for the −2 km s⁻¹ methanol component, while the CO (2–1) high-velocity components are in cyan. The circle size is defined by the uncertainty on the absolute position of the emission peak in each velocity component (largest circle has ~0.02″).