The Tempel 2 dust trail

Details The Tempel 2 dust trail The Tempel 2 dust trail

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990icar...86..236s&link_type=abstract

Icarus (ISSN 0019-1035), vol. 86, July 1990, p. 236-247. Research supported by NASA.

Astronomy and Astrophysics

Astronomy

39

Cometary Atmospheres, Infrared Astronomy Satellite, Meteoroid Dust Clouds, Particle Size Distribution, Tempel 2 Comet, Black Body Radiation, Temperature Gradients, Thermodynamic Properties, Comets, Tempel 2, Dust, Comet Tails, Iras Satellite, Particles, Size, Satellite Observations, Composition, Velocity, Comet Nuclei, Cource, Origin, Emissions, Temperature, Gradients, Calculations, Diameter, Thermal Properties, Parameters, Density, Meteor Showers

Scientific paper

The IAS satellite's extensive observations of Comet Tempel 2 dust trail suggest that it is composed of particles of greater-than-1 mm diameter, whose velocities relative to the comet (assuming isotropic emission) are in the range of several m/sec. Excess color temperatures obtained relative to a blackbody indicate that either (1) the particles are large enough to support a temperature gradient over their surfaces, or (2) a small-particle population exists whose diameters are smaller than 100 A. If these small particles had not originated from the large particles, their acceleration to km/sec velocities by the gas outflow would have prevented their ejection into trail orbits.

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