Absolute spectrophotomery of comets 1973XII and 1975IX: II. Profiles of the Swan bands |
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| Authors: | Lucy L Danylewych Ralph W Nicholls John S Neff Jeremy B Tatum |
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| Institution: | Centre for Research in Experimental Space Science, York University, Downsview, Ontario, Canada M3J 1P3;Department of Physics and Astronomy, University of Iowa, Iowa City, Iowa 52242, Canada;Department of Physics, University of Victoria, Victoria British Columbia, Canada V8W 2Y2 |
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| Abstract: | Absolute spectrophotometric measurements of the Swan bands of two comets have been compared with computed synthetic spectra using modern Franck-Condon and Hönl-London factors, and varying rotational, vibrational, and electronic excitation temperatures. Rotational and vibrational temperatures were obtained for the comets. Although the electronic excitation temperature and the molecular column density cannot be separated, a relationship is found between these two quantities. A review is made of recent determinations of column densities for CN in comets. |
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