The Plausibility of Silicate-Core Ice-Mantle Grains

  • M. J. Dempsey
  • N. C. Wickramasinghe
Conference paper
Part of the Astrophysics and Space Science Library book series (ASSL, volume 55)


Extinction curves for silicate-core ice-mantle grains are computed and compared with the infrared spectral data on the BN object in the Orion nebula. A ratio of outer mantle to core radius of 1.3 which best fits this data suggests that silicate-core ice-mantle grains are unlikely to contribute a major part to the total visual extinction coefficient of interstellar material.


Core Radius Monthly Notice Interstellar Extinction Extinction Curve Visual Extinction 
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Copyright information

© D. Reidel Publishing Company, Dordrecht, Holland 1976

Authors and Affiliations

  • M. J. Dempsey
    • 1
  • N. C. Wickramasinghe
    • 1
  1. 1.Dept. of Applied Mathematics and AstronomyUniversity CollegeCardiff, WalesUK

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