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Table 9
Abundance ratios.
| Molecules | Ratio | ||||
|---|---|---|---|---|---|
| Cold core 1 | Cold core 2 | Outflow position | Hot core | Solar (a) | |
| Solar 12C (b)/13CO | 397.1 | 181.0 | 10.6 | 33.3 | 89.4 |
| 13CO/C18O | 4.5 | 6.1 | 5.6 | 7.7 | 3.0 |
H2CO/H CO |
− | − | − | 38.9 | 89.4 |
| SO/33SO | − | − | − | 11.2 | 124.9 |
| SO2/33SO2 | − | − | − | 72.0 | 124.9 |
| SO2/34SO2 | − | − | − | 12.4 | 22.1 |
| E−CH3OH/A−CH3OH | − | − | − | 0.3 | − |
Notes. Ratios are given for positions where both species are detected. (a) Taken from Asplund et al. (2009). (b)The solar 12C abundance with respect to H2 is taken to be 1.33 × 10−4 (Asplund et al. 2009).
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