Table 5.
D/H ratios derived from abundance ratios of [CH2DOH]/[CH3OH] and [CHD2OH]/[CH3OH] considering statistical corrections.
| Used abundance ratio | Derived D/H (%) |
|||
|---|---|---|---|---|
| H-MM1 | L694-2 | L1521E | B68 | |
| CH2DOH/CH3OH | 1.9±0.7 | 0.8±0.5 | 0.2±0.1 | < 0.5 |
| CHD2OH/CH3OH | 12.1±2.2 | 7.0±2.1 | < 5 | < 9 |
Notes. According to Table B.1 of Manigand et al. (2019), the relations of the molecular abundance ratio with the D/H ratio are CH2DOH/CH3OH = 3(D/H) and CHD2OH/CH3OH = 3(D/H)2. Upper limits are calculated based on 5σ noise levels of CH2DOH and CHD2OH lines (Table B.1).
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