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Fig. C1.


VINE maps of IRAS 16293A for the 349.346 GHz line of CH3CN v = 0, the 350.168 GHz line of CH3CN v8 = 1, the 339.366 GHz line of 13CH3CN, the 349.254 GHz of CHCN, the 338.940 GHz of CH3C15N, the 347.110 GHz of CH2DCN, the 362.520 GHz of CHD2CN, the 329.235 GHz of C2H5CN, the 341.564 GHz of C2H3CN and the 336.520 GHz of HC3N. The axis show the position offset from phase centre of the observations. Contour levels start at 80 mJy km s−1 and increase in steps of 11 mJy km s−1. The red star marks the peak continuum position in the PILS dataset of IRAS 16293A. The black cross marks the offset position where the spectra analysed in this work are extracted from. The red and blue circles mark the positions of the two continuum peaks A1 and A2 respectively, found by previous authors, using coordinates that have been corrected by the rate of position angle change with year determined by Pech et al. (2010).

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