Charge transfer in the reversible C + H/+/ yields C/+/ + H reaction and the C I lambda1101 absorption edge in A stars

Details Charge transfer in the reversible C + H/+/ yields C/+/ + H reaction and the C I lambda1101 absorption edge in A stars Charge transfer in the reversible C + H/+/ yields C/+/ + H reaction and the C I lambda1101 absorption edge in A stars

Jun 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....86l...7c&link_type=abstract

Astronomy and Astrophysics, vol. 86, no. 3, June 1980, p. L7-L9. Deutsche Forschungsgemeinschaft

Astronomy and Astrophysics

Astrophysics

1

A Stars, Carbon, Charge Transfer, Hydrogen, Nonequilibrium Ionization, Stellar Atmospheres, Ultraviolet Spectra, Atmospheric Models, Atmospheric Temperature, Interstellar Chemistry, Positive Ions

Scientific paper

The paper examines the simplified non-LTE calculations of the C I lambda1101 absorption edge performed for model atmospheres of effective temperatures of 10,000 and 11,000 K and a surface gravity of 10,000 cm/s, including the charge transfer reaction C + H(+) reversibly yields C(+) + H + 2.34 eV. The rate coefficient suggested by Steigman (1975) in an analysis of the hot intercloud medium is adopted; the neutral carbon atom is approximated by three levels plus continuum. The ionization equilibrium C I/C II in early A-type stellar atmospheres is significantly influenced by the charge transfer reaction; the effect decreases with the increasing effective temperature.

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