Fig. 1.
Velocity integrated intensity map of the 13CH3OH transition at 303.692 GHz with the 1 mm continuum image overlaid in black contours (levels are [10, 20, 40, 80, 160]σ with σ = 0.02 Jy beam−1). The locations at which spectra have been extracted are marked in blue for MM1, green for MM2 and red for MM3. The synthesised beam (~1300 × 962 AU) is shown in the bottom left corner.
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