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Astrophysics and Space Science

, Volume 268, Issue 1–3, pp 295–299 | Cite as

Organic Molecules in Interstellar Dust: A Possible Spectral Signature at λ2200 Å?

  • N.C. Wickramasinghe
  • F. Hoyle
  • K. Nandy
Article

Abstract

The λ2200 Å interstellar absorption band, generally attributed to graphite grains, could equally well arise from π → π*electronic transitions in conjugated double bonds of organic molecules. These molecules, which should comprise ∼ 10% of the total interstellar dust mass, may be lodged within clumps of100 Å-sized refractory grains.

Keywords

Organic Molecule Band Centre Interstellar Dust Ultraviolet Absorption Spectrum Mesityl Oxide 
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 1999

Authors and Affiliations

  • N.C. Wickramasinghe
    • 1
  • F. Hoyle
    • 1
  • K. Nandy
    • 2
  1. 1.Department of Applied Mathematics and AstronomyUniversity CollegeCardiffU.K.
  2. 2.Royal ObservatoryEdinburghScotland

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