Fig. 8
Black: integrated line strengths of HCN modelled using a Gaussian abundance profile characterised by f0 = 5.0 × 10-7 with respect to H2 and re = 1.8 × 1015 cm. Overplotted are the integrated line strengths measured with APEX (red circles), SEST (blue circles), and HIFI (purple circles). The error bars for the resolved molecular lines correspond to an absolute error of 20%.
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