Fig. 8
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(a) Posterior distributions of the oxygen isotope ratio 16O/18O for the three objects. The solar value of 525 ± 21 (Lyons et al. 2018) and the ISM value of 557 ± 30 (Wilson 1999) are marked. (b) Posterior distributions of the abundance of fluorine with respect to hydrogen normalised to the solar value. The solar fluorine abundance is overplotted as a Gaussian distribution with a 1σ scatter (Maiorca et al. 2014).
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