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Carbon-rich dust past the asymptotic giant branch: aliphatics, aromatics, and fullerenes in the Magellanic Clouds

Authors
  • G C, Sloan
  • E, Lagadec
  • A A, Zijlstra
  • K E, Kraemer
  • A P, Weis
  • Mikako, Matsuura
  • K, Volk
  • Els Peeters
  • W W, Duley
  • Jan Cami
  • J, Bernard-Salas
  • F, Kemper
  • R, Sahai
Type
Published Article
Journal
The Astrophysical Journal
Publisher
American Astronomical Society
Publication Date
Aug 09, 2014
Volume
791
Issue
1
Pages
28–28
Source
SETI Institute
License
Unknown

Abstract

Infrared spectra of carbon-rich objects that have evolved off the asymptotic giant branch reveal a range of dust properties, including fullerenes, polycyclic aromatic hydrocarbons (PAHs), aliphatic hydrocarbons, and several unidentified features, including the 21 μm emission feature. To test for the presence of fullerenes, we used the position and width of the feature at 18.7-18.9 μm and examined other features at 17.4 and 6-9 μm. This method adds three new fullerene sources to the known sample, but it also calls into ...

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