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Simulation of organic interstellar dust in the laboratory

Published online by Cambridge University Press:  01 February 2008

Walt W. Duley
Walt W. Duley*
Affiliation:
Department of Physics and Astronomy, University of Waterloo, 200 University Ave. West, Waterloo, Ontario, CanadaN2L3G1 email: wwduley@uwaterloo.ca
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Abstract

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New techniques for the generation and analysis of carbon nanoparticles (CNPs) have been developed and have resulted in the production of CNP samples whose infrared spectral properties are essentially identical to those observed in interstellar absorption and emission. These particles are of mixed aromatic/aliphatic composition. Spectra of CNPs containing 102–104 atoms will be discussed in relation to spectra of interstellar materials. We find that infrared line widths in these samples are typically 10–30 cm−1, but can be as small as 2 cm−1. Simulation of the 3.28 μm feature is shown to yield important new insight into the nature of interstellar CNPs.

Keywords

Infrared: ISMISM: moleculesISM: lines and bands(stars:) circumstellar matter
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S251: Organic Matter in Space , February 2008 , pp. 383 - 392
Copyright
Copyright © International Astronomical Union 2008

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