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Formation and Evolution of Circumstellar and Interstellar PAHs:A Laboratory Study

Published online by Cambridge University Press:  30 March 2011

C. Joblin ,
A.G.G.M. Tielens ,
C.S. Contreras ,
C.L. Ricketts  and
F. Salama
C.S. Contreras
Affiliation:
NASA Ames Research Center, Moffett Field, CA, USA
C.L. Ricketts
Affiliation:
NASA Ames Research Center, Moffett Field, CA, USA
F. Salama
Affiliation:
NASA Ames Research Center, Moffett Field, CA, USA

Abstract

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Studies of dust analogs formed from hydrocarbon(CH4, C2H2, C2H4, C2H6) and PAH precursors havebeen performed using a new facility that we have developed to simulate interstellar andcircumstellar processes. The species formed in a plasma are detected,characterized andmonitored in situ with high-sensitivity techniques,which provide bothspectroscopic and ion mass information. From these measurements we derive information onthe nature,the size and the structure of dust particles,as well as a betterunderstanding of the growth and destruction processes of extraterrestrial dust.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 46: PAHs and the Universe: A Symposium to Celebrate the 25thAnniversary of the PAH Hypothesis , 2011 , pp. 201 - 207
Copyright
© EAS, EDP Sciences 2011

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