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Table 2
Comparison of NO and N2O abundances at one beam offset around source B.
| Source | NO/H2 | N2O/H2 | NO/N2O | Reference |
|---|---|---|---|---|
| IRAS 16293–2422B | ≤1.7 × 10−9a | ~3.3 × 10−9b | ≤0.5 | This work |
| Sgr B2(M) | ~9 × 10−9 | ~1 × 10−9 | ~10 | Ziurys et al. (1994) |
| Sgr B2(N) | 1.32 × 10−8 | 1.5 × 10−9 | 8.8 | Halfen et al. (2001) |
| Sgr B2 | 1 × 10−8 | – | – | Liszt & Turner (1978) |
| L134N | 6 × 10−8 | – | – | McGonagle et al. (1990) |
| NGC 1333 IRAS 4A | 2.3 × 10−8 | – | – | Yıldız et al. (2013) |
| L1157-B1 | 4−7 × 10−7 | – | – | Codella et al. (2018) |
| SVS13-A | ≤3 × 10−7 | – | – | Codella et al. (2018) |
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