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Table 7
Summary of C18O abundance profiles.
| Source | Profile | X in | T ev | X D | n de | X 0 |
| [K] | [cm-3] | |||||
|
|
||||||
| IRAS 2Aa | Drop | 1.5 × 10-7 | 25 | ~4 × 10-8 | 7 × 104 | 5 × 10-7 |
| IRAS 4Ab | Drop | ~1 × 10-7 | 25 | 5.5 × 10-9 | 7.5 × 104 | 5 × 10-7 |
| IRAS 4Bb | Jump | 3 × 10-7 | 25 | 1 × 10-8 | ... | ... |
| Ser-SMM1 | Drop | 1.5 × 10-7 | 25 | 1.0 × 10-8 | 1.4 × 105 | 5 × 10-7 |
| Elias29 | Constant | 5 × 10-7 | ... | 5 × 10-7 | ... | 5 × 10-7 |
| GSS30IRS1 | Jump | 4 × 10-7 | 25 | 2 × 10-8 | ... | ... |
Notes.Xin is the abundance of inner envelope, Tev is the evaporation temperature, XD drop zone abundance, nde is the desorption density, and X0 is the abundance of the outermost part of the envelope. See Fig. B.1 in Yıldız et al. (2010) for definition. Results from;
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