Deconvolved size (in arcsec) for different molecular transitions (listed in Table 1) versus the upper level energy of the transition for cores A (top panel) and B (bottom panel). In both panels, black circles correspond to CH3CN, open circles to CH3CN vibrationally excited, red pentagons to CH3OH, and blue stars to transitions of other molecules. The typical error in size is shown in the top panel.
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