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A test case for the organic refractory model of interstellar dust

Authors
  • S S, Shenoy
  • Dcb, Whittet
  • Jean Chiar
  • A J, Adamson
  • W G, Roberge
  • G E, Hassel
Type
Published Article
Journal
The Astrophysical Journal
Publisher
American Astronomical Society
Publication Date
Jul 09, 2003
Volume
591
Issue
2
Pages
962–962
Source
SETI Institute
License
Unknown

Abstract

The organic refractory model of interstellar dust postulates that the grains primarily responsible for visual extinction consist of silicate cores coated with organic refractory matter (ORM) supposed to form by photochemical processing of ice mantles. We identify the line of sight to the early-type star Elias 25, in the ρ Oph dark cloud, as a test for local production of ORM in an environment where mantled grains are exposed to a substantial ultraviolet radiation field. Infrared spectra of Elias 25 in the 2.4-4.0 μm region were used to examine ...

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