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Table 3
HDO abundances with respect to H2 determined in several low-mass star-forming regions.
| Source | Inner | Outer | Absorbing layer | Outflow | References |
| abundancea | abundancea | N(HDO) (cm-2) | abundance | ||
|
|
|||||
| NGC 1333 IRAS 4A | 7.5 × 10-9 |
1.2 × 10-11 |
1.4 × 1013 | 0.7–1.9 × 10-9 | This paper |
| NGC 1333 IRAS 4B | 1.0 × 10-8 |
1.2 × 10-10 |
1.4 × 1013 | – | This paper |
| NGC 1333 IRAS 2A | 8 × 10-8 |
7 × 10-10 |
– | – | Liu et al. (2011) |
| IRAS 16293-2422 | 1.8 × 10-7 |
8 × 10-11 |
2.3 × 1013 | – | Coutens et al. (2012, 2013) |
| L1448-mm | 4 × 10-7 | – | – | – | Codella et al. (2010) |
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