Fig. A.1
Comparison of the H13CO+(3−2) line from IRAS 16293A observed with APEX. The spectra resulting from phase 1 (corresponding to off position on one side of the source in symmetric wobbler switching mode) and phase 2 (off position on the other side) are shown in blue and red, respectively. The spectra have been baseline subtracted and normalized to the average peak intensity of the two spectra. Data from 2012-04-01.
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