2006/04/10 by N. P. Abel · 46 citations
Chemistry · Physics and Astronomy · #Astronomy #Astrophysics #Astrophysics and Star Formation Studies #Atomic and Molecular Physics #Atomic physics #Emission spectrum #H II region #Ion #Ionization #Line (geometry) #Photodissociation #Physics #Spectral line #Spectroscopy and Laser Applications #astro-ph
paper · pdf · doi:10.1111/j.1365-2966.2006.10282.x
published in Monthly Notices of the Royal Astronomical Society 368(4), 1949-1958 (Oxford University Press) · 18 pages, 7 figures, accepted for publication in the MNRAS
arxiv created 2006/04/10 · openalex publication_date 2006/04/29 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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.