The H+ region contribution to [C ii] 158-μm emission |
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Authors: | N. P. Abel |
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Affiliation: | Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506, USA |
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Abstract: | The [C ii ] 158-μm line is an important emission-line diagnostic in photodissociation regions (PDRs), but this emission line can also emerge from ionized gas. This work calculates the contribution of [C ii ] emission from ionized gas over a wide range of parameter space by considering the simplified case of an H+ region and PDR in pressure equilibrium. Additionally, these calculations also predict the strong correlation observed between [N ii ] 205-μm emission and [C ii ] discussed by previous authors. Overall, the results of these calculations have wide-ranging applications to the interpretation of [C ii ] emission in astrophysical environments. |
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Keywords: | equation of state line: formation H ii regions infrared: general |
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