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Fig. 10


CS, HCN, CH3OH (sum of the 4 brightest lines at 157 GHz), and HNC lines observed with the IRAM 30-m telescope in comet C/2006 P1 (McNaught) on 16.5 or 17.6 January 2007. Spectra have been plotted at the same horizontal scale to compare the line widths. The intensity scale is reduced by 10 and 2 for HCN and HNC, respectively, and shifted vertically for better viewing.

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