Table 3
Isotopologue ratios retrieved from frequency-corrected line-intensity ratios Rc, as described in the text.
| Isotopologue | Transition | Rc | Solar | |
|---|---|---|---|---|
| ratio | isotope ratio | |||
| 12CO/13CO | 2−1 | 12.3 ± 0.5 | 12C/13C | 89 |
| H12CN/H13CN | 2−1 | 5.1 ± 0.9 | ||
| 12CS/13CS | 5−4 | 21.7 ± 3.4 | ||
| 12CN/13CN | 2−1 | 16.7 ± 4.2 | ||
| 28SiO/29SiO | 4−3 | 7.5 ± 1.3 | 28Si/29Si | 20 |
| 5−4 | 7.4 ± 0.6 | |||
| 28SiS/29SiS | 12−11 | 20.4 ± 6.8 | ||
| 14−13 | 12.8 ± 3.1 | |||
| 28SiO/30SiO | 4−3 | 8.4 ± 1.1 | 28Si/30Si | 30 |
| 6−5 | 9.3 ± 1.3 | |||
| 28SiS/30SiS | 12−11 | 14.5 ± 1.9 | ||
| 13−12 | 12.3 ± 3.1 | |||
| 14−13 | 28.2 ± 8.0 | |||
| 29SiO/30SiO | 4−3 | 1.1 ± 0.2 | 29Si/30Si | 1.5 |
| 29SiS/30SiS | 12−11 | 0.7 ± 0.2 | ||
| 14−13 | 2.2 ± 0.5 | |||
| 15−14 | 0.3 ± 0.1 | |||
| Si32S/Si34S | 14−13 | 10.6 ± 2.6 | 32S/34S | 22 |
| C17O/C18O | 2−1 | 1.0 ± 0.4 | 17O/18O | 0.19 |
| C16O/C18O | 2−1 | 355.7 ± 112.0 | 16O/18O | 499 |
| Si16O/Si17O | 6−5 | 74.3 ± 5.4 | 16O/17O | 2632 |
Notes. We note that the reported errors are formal errors derived from the errors on the respective integrated line strengths. We disregard 30SiO(J = 5−4) at 211.853 GHz and Si34S(J = 12−11) at 211.854 GHz in this table as they are fully blended. Solar values are taken from Asplund et al. (2009).
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