Computer Science
Scientific paper
Oct 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988icar...76..100l&link_type=abstract
Icarus (ISSN 0019-1035), vol. 76, Oct. 1988, p. 100-109.
Computer Science
25
Cometary Atmospheres, Cosmochemistry, Interplanetary Dust, Optical Properties, Organic Compounds, Black Body Radiation, Halley'S Comet, Photolysis, Radiation Pressure, Solar Radiation, Temperature Distribution
Scientific paper
The Khare et al. (1984) optical constants for the organic material designated 'tholin' are presently used to determine an original behavior for tholin grains that is interemediate between that of dielectric and absorbing materials. The ratio of the radiation pressure to the gravitational forces is obtained, together with the temperature distribution, by solving for solar radiation field interactions; temperature is found to be a strong function of grain size, with submicronic grains being hotter than the blackbody. Such observations as CN jets, and the absence of the silicate emission feature beyond 1.5 AU heliocentric distance, can be accounted for by the presence of tholin in the cometary dust.
Lamy Philippe L.
Perrin Jean-Marie
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