Relationship of the kinematic molecular components with the warm dust and the ionised gas. Greyscale corresponds to the Spitzer/IRAC band 3 (5.7 μm) and clearly indicates the extension of the IR nebula. (a) Blue and red contours correspond to components A and C in the ¹³CO J = 2 → 1 line. Levels are from 70% to 95% of the peak value (5.68 and 1.76 K km s⁻¹, respectively), in steps of 5%. Orange contours correspond to 6 cm continuum emission (Buemi et al. 2010) from 0.6 to 1 mJy in steps of 0.1 mJy. (b) Green contours depict component B in the CO J = 2 → 1 line from 2 to 9 K km s⁻¹ in steps of 0.5 K km s⁻¹. Yellow contours correspond to the continuum-subtracted PAH emission at 11.26 μm (Buemi et al. 2010) from 0.7 to 1.3 mJy in steps of 0.2 mJy. The red circle indicates the deconvolved size of the radio recombination line emission reported by Anderson et al. (2015). The insets in both panels contain the same greyscale and contours, but zoomed to the central 10 arcsec to ease the visualisation.