Table 5
Deuteration ratios in G328.2551-0.5321.
| Deuterated molecule | Isotopologue | Envelope | G328.2551-0.5321 Xxd/Xxh | G328.2551-0.5321 D/H ratio(a,b) | TMC-1 ΧχD/Χχη (c) | IRAS 16293-2422 ΧXD/Χχη(d) |
|---|---|---|---|---|---|---|
| DCN | H13CN | Cold | 0.01 (0.005) | 0.01 (0.005) | 0.008 | 0.013 |
| DCO+ | H13CO+ | Cold | 0.003 (0.002) | 0.003 (0.002) | 0.013 | 0.009 |
| HDS |  |
Cold | ≤0.004 (0.002) | ≤0.002 (0.001) | – | 0.1 |
| HDCS | H2CS | Cold | 0.07 | 0.03 | 0.02 | – |
| HDO |  |
Warm | ≥1 × 10−3(4 × 10−4) | ≥5 × 10−4 (2 × 10−4) | – | 0.25 |
| HDCO | H2CO | Cold | 0.04 | 0.02 | 0.05 | 0.14 |
| N2D+ | N2H+ | Cold | ≤0.002 | ≤0.002 | 0.08 | 0.25 |
| CH2DOH | CH3OH | Cold | ≤0.005 | ≤0.002 | – | – |
| CH2DOH | CH3OH | Warm | ≤0.02 | ≤0.007 | 0.012 | 0.3 |
| CH3OD | CH3OH | Cold | ≤0.002 | ≤0.002 | – | – |
| CH3OD | CH3OH | Warm | ≤0.02 | ≤0.02 | – | 0.02 |
Notes. Values in parentheses correspond to the uncertainty of the molecular abundances of the main species due to the two different isotopie ratios used for 12C/13C and 32S/34S (see Sect. 5.3). (a)The value of D/H is corrected for the number of equivalent hydrogen atoms in the molecule (see Appendix B in Manigand et al. 2019). (b)This work. (c)Butner et al. (1995); Minowa et al. (1997); Turner (2001); Markwick et al. (2002) (d)van Dishoeck et al. (1995); Roueff et al. (2000); Parise et al. (2004); Coutens et al. (2013).
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