Nov 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980igic.reptq....h&link_type=abstract
In its Interstellar Grains Investigated and Comets Proposed as a Vehicle for Panspermia 26 p (SEE N82-14995 05-88)
Other
Chemical Composition, Granular Materials, Interstellar Matter, Mass Spectra, Dielectrics, Graphite, Infrared Absorption, Interstellar Extinction, Kramers-Kronig Formula, Metal Ions, Particle Diffusion, Polysaccharides, Siloxanes
Scientific paper
Interstellar extinction of starlight was observed and plotted as a function of inverse wavelength. Agreement with the calculated effects of the particle distribution is shown. The main kinds of grain distinguished are: (1) graphite spheres of radius 0.02 microns, making up 10% of the total grain mass; (2) small dielectric spheres of radius 0.04 microns making up 25%; and (3) hollow dielectric cylinders containing metallic iron, with diameters of 2/3 microns making up 45%. The remaining 20% consists of other metals, metal oxides, and polysiloxanes. Absorption factor evidence suggests that the main dielectric component of the grains is organic material.
Hoyle Fiona
Wickramasinghe Chandra N.
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