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Table D.1
Initial fractional abundances used in Astrochem, relative to H2.
| Species | Frac. abun. | Frac. abun. | Frac. abun. | Frac. abun. | Remark/Reference |
| IRAS4B | IRAS4A | L1448C | L1157 | ||
|
|
|||||
| H2 | 1.00 × 100 | 1.00 × 100 | 1.00 × 100 | 1.00 × 100 | |
| He | 1.70 × 10-1 | 1.70 × 10-1 | 1.70 × 10-1 | 1.70 × 10-1 | Asplund et al. (2009) |
| S+ | 1.60 × 10-7 | 1.60 × 10-7 | 1.60 × 10-7 | 1.60 × 10-7 | Wakelam & Herbst (2008) |
| Si+ | 1.60 × 10-8 | 1.60 × 10-8 | 1.60 × 10-8 | 1.60 × 10-8 | Wakelam & Herbst (2008) |
| Fe+ | 6.00 × 10-9 | 6.00 × 10-9 | 6.00 × 10-9 | 6.00 × 10-9 | Wakelam & Herbst (2008) |
| Na+ | 4.00 × 10-9 | 4.00 × 10-9 | 4.00 × 10-9 | 4.00 × 10-9 | Wakelam & Herbst (2008) |
| Mg+ | 1.40 × 10-8 | 1.40 × 10-8 | 1.40 × 10-8 | 1.40 × 10-8 | Wakelam & Herbst (2008) |
| e− | 2.00 × 10-7 | 2.00 × 10-7 | 2.00 × 10-7 | 2.00 × 10-7 | |
| NH3(ice) | 4.28 × 10-6 | 4.28 × 10-6 | 4.28 × 10-6 | 4.28 × 10-6 | 10% of all N, Wakelam & Herbst (2008) |
| CO(ice) | 1.70 × 10-5 | 8.80 × 10-6 | 9.60 × 10-6 | 2.80 × 10-5 | free parameter to match observed intensity |
| N2(ice) | 4.80 × 10-7 | 3.00 × 10-7 | 4.60 × 10-7 | 9.40 × 10-7 | free parameter to match observed intensity |
| CH3OH(ice) | 1.00 × 10-5 | 3.60 × 10-6 | 5.00 × 10-6 | <2.00 × 10-6 | free parameter to match observed intensity |
| H2O(ice) | 2.96 × 10-4 | 3.08 × 10-4 | 3.10 × 10-4 | 2.96 × 10-4 | all remaining O, Hincelin et al. (2011) |
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