The H+ Region Contribution to [C II] 158 Micron Emission

Details The H+ Region Contribution to [C II] 158 Micron Emission The H+ Region Contribution to [C II] 158 Micron Emission

2006-04-10

arxiv.org/abs/astro-ph/0604212v1

Mon.Not.Roy.Astron.Soc.368:1949-1958,2006

Astronomy and Astrophysics

Astrophysics

18 pages, 7 figures, accepted for publication in the MNRAS

Scientific paper

10.1111/j.1365-2966.2006.10282.x

The [C II] 158 micron 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 micron 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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