Hostname: page-component-586b7cd67f-g8jcs Total loading time: 0 Render date: 2024-11-25T18:11:55.051Z Has data issue: false hasContentIssue false
  • English
  • Français

On buckyonions as a carrier of the 2175 Å interstellar extinction feature

Published online by Cambridge University Press:  01 February 2008

Juhua Chen ,
Moping Li ,
Aigen Li  and
Yongjiu Wang
Juhua Chen
Affiliation:
Department of Physics, Hunan Normal University, Changsha, Hunan 410081, China email: [email protected], [email protected] Department of Physics & Astronomy, University of Missouri, Columbia, MO 65211, USA email: [email protected], [email protected]
Moping Li
Affiliation:
Department of Physics & Astronomy, University of Missouri, Columbia, MO 65211, USA email: [email protected], [email protected]
Aigen Li
Affiliation:
Department of Physics & Astronomy, University of Missouri, Columbia, MO 65211, USA email: [email protected], [email protected]
Yongjiu Wang
Affiliation:
Department of Physics, Hunan Normal University, Changsha, Hunan 410081, China email: [email protected], [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

In recent years buckyonions have been suggested as a carrier of the 2175 Å interstellar extinction feature, based on the close similarity between the electronic transition spectra of buckyonions and the 2175 Å interstellar extinction feature. We examine this hypothesis by calculating the interstellar extinction with buckyonions as a dust component. It is found that dust models containing buckyonions (in addition to amorphous silicates, PAHs, graphite or amorphous carbon) can closely reproduce the observed interstellar extinction curve. However, a more severe challenge to the buckyonion hypothesis is provided by the non-detection of the ~7–8 μm C–H stretching bands expected from buckyonions in the diffuse interstellar medium. This will allow us to place an upper limit on the abundance of buckyonions.

Keywords

DustextinctionISM: lines and bandsISM: molecules
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S251: Organic Matter in Space , February 2008 , pp. 71 - 72
Copyright
Copyright © International Astronomical Union 2008

References

Li, A. & Draine, B. T. 2001, ApJ, 554, 778Google Scholar
Li, A. & Greenberg, J. M. 2003, Solid State Astrochemistry, p. 37Google Scholar
Ruiz, A., Bretón, J., & Gomez Llorente, J. M. 2005, Phys. Rev. Lett., 94, 105501CrossRefGoogle Scholar
Stecher, T. P. & Donn, B. 1965, ApJ, 142, 1681Google Scholar
Weingartner, J. C. & Draine, B. T. 2001, ApJ, 548, 296 (WD)Google Scholar