Observations of Comet Crommelin. II - The dust component

Details Observations of Comet Crommelin. II - The dust component Observations of Comet Crommelin. II - The dust component

Dec 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985mnras.217..659e&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 217, Dec. 1, 1985, p. 659-664. SERC-supported research.

Astronomy and Astrophysics

Astronomy

6

Comets, Cosmic Dust, Thermal Emission, Grain Size, Spatial Distribution, Temperature

Scientific paper

Infrared observations of thermal emission from Comet Crommelin on March 28, 1984 obtained with a 3.8-m telescope, and visible dust distribution from March 30, 1984, detected with a Schmidt plate are described. A blackbody spectrum with a temperature of 314 +44, -33 K between 5-20 microns represents the Crommelin observations. From the study of thermal flux the mass of dust in the beam is estimated to be 520,000 kg, and a mass-loss rate of 130 kg/sec is observed. The use of the Mie theory calculations to determine the temperature and emission spectra of grains is investigated; magnetite and composite material grain types are analyzed. It is concluded that the temperature of dust grains is 314 +44, -33 K and the emission is anisotropic.

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