Fig. 5
D/H ratio of the deuterated species detected towards IRAS 16293 A in red and IRAS 16293 B in blue. The D/H ratio is calculated from the abundance ratio, with the statistical correction due to the chemical group (see Appendix B of Manigand et al. 2019). D/H ratios towards IRAS 16293 B are taken from Coutens et al. (2016), Lykke et al. (2017), Persson et al. (2018), and Jørgensen et al. (2018).
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