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Table 3
DCO+ best approximation model parameters.
| Parameter | IRAS 16293−2422 | VLA 1623−2417 |
|---|---|---|
| Tpeak (K) | 17–19 | 11–16 |
| Drop boundaries: | ||
| Tsub (K) | 35 | 35 |
| nde (cm−3) | ≤106 | 3 × 106 |
| CO abundance: | ||
| Inner Xin | 10−5 | 10−5 |
| Drop XD | 10−6 | 10−7 |
| Outer X0 | 10−4 | 10−4 |
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