Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...253..622l&link_type=abstract
Astrophysical Journal, Part 1, vol. 253, Feb. 15, 1982, p. 622-633. NASA-supported research.
Astronomy and Astrophysics
Astrophysics
33
Comets, Interstellar Matter, Molecular Energy Levels, Nitrogen Hydrides, Submillimeter Waves, Ultraviolet Spectroscopy, Computer Techniques, Doppler Effect, Electric Moments, Fluorescence, Molecular Rotation, Molecular Spectra, Near Ultraviolet Radiation, Radiative Transfer, Solar Flux, Solar Spectra
Scientific paper
A description is presented of the results of computer calculations on the molecule NH, which is an important constituent of cometary comae, and a probable, but an as yet undetected, interstellar species. Attention is given to spectroscopic properties, the treatment of solar spectral data, and radiative transfer calculations. The results of calculations for the Einstein A-coefficients are given in an appendix, where the entries for the X-X and A-A transitions depend on the assumed permanent electric-dipole moment squared. Rotational-spin-Lambda-doublet energy levels used for statistical equilibrium population densities are listed in a table.
Kuiper N. R. E.
Litvak Marvin M.
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