The C II 2325 A multiplet and the 158 micron transition

Details The C II 2325 A multiplet and the 158 micron transition The C II 2325 A multiplet and the 158 micron transition

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...139..233h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 139, no. 1, Oct. 1984, p. 233-236.

Astronomy and Astrophysics

Astronomy

20

Carbon, Collision Parameters, Electron Transitions, Infrared Astronomy, Interstellar Matter, Ionic Collisions, Density Distribution, Electron Scattering, Fine Structure, Proton Scattering, Stellar Radiation, Temperature Dependence, Ultraviolet Spectra

Scientific paper

Effective electron-ion collision strengths for the excitation of the fine-structure levels of the terms 2s2p2 4P and 2D in C+ and for transitions among the levels of 2s2p2 4P are calculated. The authors investigate the temperature and density dependence of relative emissivities of the individual components within the intercombination multiplet at λ2325, including the contributions from proton collisions. They also look at the influence of stellar radiation fields. The ratio of the emissivities of the intercombination multiplet to the infrared 158 μm transition is calculated as a function of temperature and density.

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