Open Access
Table A.1
Elemental abundances and other model parameters
| Element | Abundancea | nH + 2nH2 (cm−3) | T (K) | Cosmic ray ionization rate (s−1) | AV |
|---|---|---|---|---|---|
| H2 | 0.5 | 1.0 × 105 | 10 | 1.3 × 10−17 | 10 |
| He | 0.09 | ||||
| C+ | 1.4 × 10−4 | ||||
| N | 3.0 × 10−5 | ||||
| O | 1.4 × 10−4 | ||||
| s-H2Ob | 1.0 × 10−4 | ||||
| S+ | 4.0 × 10−6 | ||||
| Fe+ | 2.0 × 10−8 | ||||
| Cl+ | 1.0 × 10−7 | ||||
| F | 6.7 × 10−9 |
a Relative to total hydrogen (nH + 2nH2).
b s-H2O denotes H2O on grain surfaces.
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