The chemical composition of the interstellar medium

  title={The chemical composition of the interstellar medium},
  author={Adolf N. Witt},
  journal={Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences},
  pages={1949 - 1959}
  • A. Witt
  • Published 15 October 2001
  • Physics, Geology
  • Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences
Our knowledge of the abundances of heavy elements with nuclear charge Z > 2 in the interstellar medium is surprisingly incomplete. Several factors contribute to this state of affairs. A substantial but unknown fraction of heavy elements is locked up in interstellar dust, but the total mass of interstellar grains, as well as their size distribution and exact composition, are still uncertain. The use of the chemical compositions of stellar atmospheres as a reference for the interstellar medium… 

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