Fig. 14

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Rotational diagrams for OCS derived using the emission lines observed towards SVS13-A (see Table 1 and Fig. 9). The parameters Nu, gu, and Eup are, respectively, the column density, the degeneracy, and the energy (with respect to the ground state of each symmetry) of the upper level. A source size of 0.′′ 3 has been assumed, following the SO, SO2, and H2CS LVG analysis. The derived values of the rotational temperature are reported in the panels.
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