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Infrared Spectroscopy of Anhydrous Interplanetary Dust ParticlesInfrared (IR) spectroscopy is the primary means of mineralogical analysis of materials outside our solar system. The identity and properties of circumstellar grains are inferred from spectral comparisons between astronomical observations and laboratory data from natural and synthetic materials. These comparisons have been facilitated by the Infrared Space Observatory (ISO), which obtained IR spectra from numerous astrophysical objects over a wide spectral range (out to 50/cm) where crystalline silicates and other phases have distinct features. The anhydrous interplanetary dust particles (IDPs) are particularly important comparison materials because some IDPs contain carbonaceous material with non-solar D/H and N-15/N-14 ratios and amorphous and crystalline silicates with non-solar 0- isotopic ratios, demonstrating that these IDPs contain preserved interstellar material. Here, we report on micro- Fourier transform (FT) IR spectrometry of IDPs, focusing on the inorganic components of primitive IDPs (FTIR spectra from the organic/carbonacecous materials in IDPs are described elsewhere).
Document ID
20030073596
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Keller, L. P.
(NASA Johnson Space Center Houston, TX, United States)
Flynn, G. J.
(State Univ. of New York Plattsburgh, NY, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2003
Publication Information
Publication: Workshop on Cometary Dust in Astrophysics
Subject Category
Lunar And Planetary Science And Exploration
Funding Number(s)
CONTRACT_GRANT: NAG5-4843
PROJECT: RTOP 344-31-40-07
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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