Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993azh....70..713b&link_type=abstract
Astronomicheskij Zhurnal, vol. 70, p. 713
Astronomy and Astrophysics
Astronomy
Interstellar Gas, Ground State, Photoexcitation, Cooling, Electron Impact, Heat Transfer, Stellar Envelopes, Electron Energy
Scientific paper
The effect of perturbed ground configuration terms on the cooling function of the impact perturbation is investigated. Calculations are performed for the chemical elements C, N, O, Ne, Si, and Fe. Calculation results are compared with three models of the population of ground configuration terms. The model in which the term populations are equal to Boltzmann terms at an excitation temperature equal to the electron temperature is shown to be a good approximation for the cooling function (with an accuracy of 10-20 percent) in the entire temperature and density variation range.
Bychkov K. V.
Egorova S. B.
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