Rotational and vibrational synthetic spectra of linear parent molecules in comets

Details Rotational and vibrational synthetic spectra of linear parent molecules in comets Rotational and vibrational synthetic spectra of linear parent molecules in comets

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26as...68..223c&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 68, no. 2, March 1987, p. 223-258.

Astronomy and Astrophysics

Astronomy

63

Astronomical Spectroscopy, Cometary Atmospheres, Radio Spectra, Rotational Spectra, Vibrational Spectra, Infrared Telescopes, Molecular Excitation, Radio Telescopes, Comets, Rotation, Spectra, Parent Molecules, Atmosphere, Distribution, Hydrogen Cyanide, Comet Nuclei, Astronomy, Collisions, Infrared, Models, Wavelengths, Spectroscopy, Molecular Processes, Radiation, Distance, Vibration, Resonance, Parameters, Equipment, Intensity, Carbon Monoxide, Calculations, Carbon Dioxide, Data, Temperature, Kinetics, S

Scientific paper

The excitation conditions of linear parent molecules in cometary atmospheres are evaluated and modeled. The model is valid for most linear molecules without electronic angular momentum. It takes into account collisions and infrared excitation. The molecule rotational population distribution is computed as a function of distance to nucleus. The line intensities of the strongest parallel and perpendicular fundamental vibrational bands, as well as the pure rotational lines, can then be evaluated. This model is applied to several candidate parent molecules, for observing conditions corresponding to available or planned instruments, either ground-based or aboard aircrafts, satellites or space probes.

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