Thermal behaviour of pure and dusty ices on comets and icy satellites

Details Thermal behaviour of pure and dusty ices on comets and icy satellites Thermal behaviour of pure and dusty ices on comets and icy satellites

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...227..246k&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 227, no. 1, Jan. 1990, p. 246-254.

Astronomy and Astrophysics

Astrophysics

8

Comets, Ice, Icy Satellites, Solar Radiation, Temperature Effects, Cosmic Dust, Emissivity, Halley'S Comet, Solar Flux, Surface Temperature, Temperature Profiles, Comets, Planets, Satellites, Icy Bodies, Thermal Properties, Ice, Dust, Diagrams, Energy, Calculations, Thermodynamics, Particles, Radiation, Solar Effects, Transparency, Temperature, Trapping, Heating, Timescale, Absorption, Spacecraft Observations, Giotto Mission, Vega Missions, Subsurface, Surface, Density, Equilibrium, Albedo

Scientific paper

The paper is concerned with the thermal behavior both of 'pure' ice and of ices containing 'particles' in response to solar radiation. It is found that pure ices usually exhibit temperature maxima below the surface due to their partial transparency to the solar radiation. Enclosed dust particles may act as radiation traps leading to different temperature profiles and heating time-scales. The dust content estimated for the ice at the active regions of comet P/Halley causes the ice to react to changes of the radiation environment much faster than it would be the case in the absence of dust particles.

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