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Table 2.
Sulfur isotope ratios.
| LMC |
The Milky Way |
Starburst |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Ratio | N113 (a) | ST11 (b) | ST16 (b) | CMZ (c) | Inner disk (c) | Local ISM (c) | Outer galaxy (c) | Solar system (d) | IRC+10216 (e) | NGC 253 (f) | NGC 4945 (g) |
| 32S/34S | 15.0±0.6 | 14±3 | 17±2 | 19±2 | 18±4 | 24±4 | 28±3 | 22.5 | 21.8±2.6 | ∼10 | 13.5±2.5 |
| 32S/33S | 27.5±3.5 | 40±17 | 53±5 | 70±16 | 82±19 | 88±21 | 105±19 | 127 | 121±15 | 50±30 | ... |
| 32S/36S | > 81 | ... | ... | 884±104 | 2382±368 | 2752±458 | 4150±828 | 4748 | 2700±600 | ... | ... |
| 34S/33S | 2.0±0.3 | 3±2 | 3±1 | 4.2±0.2 | 4.3±0.4 | 4.2±0.5 | 4.1±0.3 | 5.6 | 5.6±0.3 | 5±3 | ... |
| 34S/36S | > 1.3 | ... | ... | 41±4 | 122±18 | 111±16 | 161±32 | 200 | 107±15 | ... | ... |
Notes. Lower limits of the isotope ratios are derived from the 3σ limits in Table 1. “...” indicates that no information is available.
References. The sulfur isotopic ratios in different environments:
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