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The spectral properties of interplanetary dust particles

Author
Sandford, Scott A.
Published
Sep 1, 1988.
Physical Description
1 electronic document
Online Version

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Summary
The observed spectral and mineralogical properties of interplanetary dust particles (IDP) allows the conclusion that: (1) the majority of IDP infrared spectra are dominated by olivine, pyroxene, or layer lattice silicate minerals, (2) to the first order the emission spectra of comets Halley and Kohoutek can be matched by mixtures of these IDP infrared types, implying that comets contain mixtures of these different crystalline silicates and may vary from comet to comet and perhaps even within a single comet, (3) do not expect to observe a single 20 micron feature in cometary spectra, (4) carbonaceous materials dominate the visible spectra properties of the IDPs even though the mass in these particles consists primarily of silicates, and (5) the particle characteristics summarized need to be properly accounted for in future cometary emission models.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 19890003965.
Accession ID: 89N13336.
NASA, Washington, Infrared Observations of Comets Halley and Wilson and Properties of the Grains; p 68-72.
Terms of Use and Reproduction
No Copyright.
View MARC record | catkey: 15693049