Molecular opacities of astrophysical interest - The A2Pi-X2Sigma(+) system of CN

Details Molecular opacities of astrophysical interest - The A2Pi-X2Sigma(+) system of CN Molecular opacities of astrophysical interest - The A2Pi-X2Sigma(+) system of CN

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...238..424j&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 238, no. 1-2, Nov. 1990, p. 424-434.

Astronomy and Astrophysics

Astrophysics

79

Absorption Spectra, Cn Emission, Cosmochemistry, Opacity, Stellar Atmospheres, Carbon Isotopes, Carbon Stars, Nitrogen Isotopes, Radiative Lifetime

Scientific paper

The A2Pi-X2Sigma(+) system of CN, calculated for all the isotopes including C-12, C-13, N-14 and N-15 and based on recent theoretical and experimental data, is presented. Partition functions, opacity distribution functions, and model atmospheres were created. The importance of the different groups of transitions in the molecule and all the weak bands/lines is considered; the transitions from more than 99 percent of the total population of the molecule are also taken into account. It is concluded that the inclusion of the opacity from the C-12N-15 and C-13N-15 isotopes is smaller than the effect of changing the microturbulence from 2.2 to 2.7 km/s or changing the C-12/C-13 ratio from 4.5 to 43.

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