Fig. 7
Black: observed main-beam temperature as a function of velocity for five rotational transitions of HCN (see Table 1). The telescope and rotational quantum number are indicated for each line. Red: resulting line profiles using a Gaussian abundance profile characterised by f0 = 5.0 × 10-7 with respect to H2 and re = 1.8 × 1015 cm. The υLSR of R Dor is 7.5 km s-1.
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