Abstract
A number of experimental studies have been carried out to verify the claim that interstellar grains largely consist of organic material, including biological cells. Our spectroscopic studies on biological cells and organic extracts from carbonaceous compounds have failed to identify the well-known 2200 Å interstellar extinction peak with the organic material.
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Wada, K., Inagaki, T. & Yabushita, S. Organic models of interstellar grains. Celestial Mech Dyn Astr 54, 275–277 (1992). https://doi.org/10.1007/BF00049564
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DOI: https://doi.org/10.1007/BF00049564