Fig. 13
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Molecular fractional abundances for the three stars (this work) and IRC +10216 (from the literature, see Table 7). The absolute abundances are shown in the top panel. The middle panel shows the abundances normalised to IRC +10216, and the bottom panel shows the abundances normalised to each star’s own C34S abundance. Uncertainties of these estimates are discussed in Sect. 4.5.
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