The Composition of Interstellar Dust

  • Ulysses J. Sofia
Conference paper
Part of the Astrophysics and Space Science Library book series (ASSL, volume 209)


The majority of interstellar grain models are based on a dust population composed of carbon and silicate grains. Abundance studies using high-resolution absorption line spectra, however, suggest that other grain types, perhaps oxides or metal grains, are prevalent in interstellar clouds. The data further suggest that not enough carbon is depleted from the gas-phase interstellar medium to account for the carbon-based grains often used to explain the measured optical and UV dust opacity. Silicon atoms are likely to be more populous in grain mantles than in silicate grain cores.


Silicon Atom Hubble Space Telescope Interstellar Cloud Interstellar Dust Diffuse Cloud 
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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Copyright information

© Kluwer Academic Publishers 1996

Authors and Affiliations

  • Ulysses J. Sofia
    • 1
  1. 1.National Research Council, NASA/GSFC Code 681GreenbeltUSA

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