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Fig. 12


Rotational temperatures derived from population diagrams of various COMs versus (a) internal luminosity and (b) dust temperature expected at the radius of the COM emitting region. The sources are color-coded following the color scheme shown on the right. The rotational temperatures and their uncertainties are listed in Table E.1. The radii, rCOM, correspondto half the sizes listed in Table 4. The internal luminosities are given in Table 1. The data points corresponding to L1448-2A and L1448-C in panel a were slightly shifted to the right (internal luminosity multiplied by a factor 1.02) for clarity. The dashed line shows Trot = Tdust for comparison purposes. The horizontal error bar represents the likely uncertainty on Tdust (rCOM).

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