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The leblanc bands of the CN radical in the spectra of comets

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Abstract

Spontaneous emission rates and absorption oscillator strengths for prominent ΔV≤4 sequence bands of theB 2Σ+-A 2Πi transition of the CN molecule are estimated. The wavelengths of some lines observed in the coma spectrum of the comet Bradfield 1980t as well as in several comets coincide with these ΔV≤4 sequence LeBlanc bands of the CN radical. Formation and destruction of the CN radical in the coma of a comet are discussed in the framework of gas phase reactions.

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Authors and Affiliations

  1. Department of Astronomy, Institute of Astronomy and Geophysics, University of São Paulo, Brazil

    P. D. Singh

  2. Department of Astronomy, National Observatory, São Cristóvão, Rio de Janeiro, RJ, Brazil

    A. M. Gomez Balboa & J. A. De Freitas Pacheco

Authors
  1. P. D. Singh
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  2. A. M. Gomez Balboa
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  3. J. A. De Freitas Pacheco
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Additional information

Work supported by CNPq, Brasília, under contract numbers: Processos 401236-83 and 4076/77-FA01.

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Singh, P.D., Balboa, A.M.G. & De Freitas Pacheco, J.A. The leblanc bands of the CN radical in the spectra of comets. Astrophys Space Sci 108, 153–160 (1985). https://doi.org/10.1007/BF00650126

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  • DOI: https://doi.org/10.1007/BF00650126

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