A test of the interstellar dust model of comets

Details A test of the interstellar dust model of comets A test of the interstellar dust model of comets

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989esasp.302...47g&link_type=abstract

In ESA, Physics and Mechanics of Cometary Materials p 47-52 (SEE N90-19989 12-90)

Physics

Comet Nuclei, Cometary Atmospheres, Comets, Dust, Interstellar Matter, Porosity, Infrared Spectra, Mass Distribution, Microwave Emission, Organic Materials, Ratios, Silicates

Scientific paper

The interstellar dust model of comets is used as a basis to simultaneously satisfy various observational constraints and to derive the porosity of comet dust. The observational constraints are: the strengths of the 3.4 and 9.7 micron emission bands; the shape of the 9.7 micron band; the relative amount of silicates to organic materials; the mass distribution of the dust. The method used involves precise calculation of the temperatures and emission characteristics of porous aggregates of interstellar dust as a function of their mass, porosity and distance to the Sun and the wavelength. The results indicate a high porosity of comet dust.

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