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Table 4
C II line ratios obtained from a photoionization models simulating Orion’s dust and chemical abundances, the observed values from Esteban et al. (2004), and the predicted values from recombination by Davey et al. (2000).
| Ratio | Model | Observations | Rec. |
|---|---|---|---|
| prediction | |||
| P | 0.8 | 0.86 | – |
| I(C II λ7231+36+37)/I(C II λ4267) | 0.40 | 1.34 | 1.19 |
| I(C II λ3918+20)/I(C II λ4267) | 0.68 | 0.88 | 0.05 |
| I(C II λ9903)/I(C II λ4267) | 0.25 | 0.24 | 0.25 |
| I(C II λ6578)/I(C II λ4267) | 0.42 | 1.17 | 0.77 |
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