Fig. 13
Abundance ratios of HCN over HC15N at 1 Myr for several sets of model parameters. The central panel is for the fiducial model from Sect. 3 and is the same as the top center panel in Fig. 6. The other panels show the result of changing one parameter at a time, as indicated with the labels on the arrows and within the panels. Contours are drawn at ratios of 100, 200, 300, 400 and 500.
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