Formation and Destruction of Grains

  • N. C. Wickramasinghe
Part of the Astrophysics and Space Science Library book series (ASSL, volume 70)


Refractory grains, consisting of graphite, SiC, silicate and iron particles, may form in mass flows from cool stars, novae and possibly supernovae. Tarry polymeric mantles (typified by polyoxymethylene copolymers) grow under conditions which prevail in massive molecular clouds. A large fraction of polymer-coated grains could be expelled into the general interstellar medium, and such grains could be responsible for the bulk of the observed interstellar extinction at optical wavelengths. Grain destruction occurs mainly by direct involvement in star formation.


Star Formation Molecular Cloud Interstellar Extinction Cool Star Dielectric Particle 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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© D. Reidel Publishing Company, Dordrecht, Holland 1977

Authors and Affiliations

  • N. C. Wickramasinghe
    • 1
  1. 1.Department of Applied Mathematics and AstronomyUniversity CollegeCardiff, WalesUK

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