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Table 3
List of the most significant initial abundances of species used in the chemical networks.
| Pre-molecular cloud | Molecular cloud | ||
| (Atomic) | (Post-modeling) | ||
| Symbol | log (nX/n ⟨ H ⟩ ) | Symbol | log (nX/n ⟨ H ⟩ ) |
|
|
|||
| H | 0 | H2 | –0.301 |
| He | –1.125 | He | –1.125 |
| O | –3.538 | CO | –3.939 |
| C | –3.886 | H2O# | –4.129 |
| Si | –5.1 | O | –4.56 |
| Fe | –5.367 | CO2# | –4.575 |
| Mg | –5.377 | O2 | –4.977 |
| S | –5.721 | SiO | –5.1 |
| Fe | –5.367 | ||
| Mg | –5.377 | ||
| H | –5.57 | ||
| H2O | –5.798a | ||
| S | –5.721 | ||
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