A generalized behavioral model for rotating short period comets with spectral orbital elements and axial orientation

Details A generalized behavioral model for rotating short period comets with spectral orbital elements and axial orientation A generalized behavioral model for rotating short period comets with spectral orbital elements and axial orientation

Apr 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984pggp.rept...54f&link_type=abstract

In NASA. Washington Repts. of Planetary Geol. Program p 54-55 (SEE N84-23431 13-91)

Computer Science

Periodic Variations, Stellar Atmospheres, Stellar Models, Stellar Rotation, Stellar Structure, Stellar Temperature, Variable Stars, Atmospheric Moisture, Dust, Ice, Particle Size Distribution, Perihelions, Water Vapor

Scientific paper

A generalized model for short period comets is developed which integrates in a fairly rigorous manner the isolation history of regions on rotating comets with specified axial orientation and the complex feedback processes involving heat, gas and dust transport, dust mantle development and coma opacity. Attention is focused on development, reconfiguration and partial or complete launching of dust mantles and the reciprocal effects of these three processes on ice surface temperature and gas and dust production. The dust mantle controls the H2O flux not only by its effect on the temperature at the ice interface but (dominantly) by its dynamic stability which strongly influences vapor diffusivity. The model includes the effects of latitude, rotation and spin axis orientation are included and applied to an initially homogeneous sphere of H2O ice and silicate using the orbital parameters of comet Encke. Numerous variations of the model, using combinations of grain size distribution, dust-to-ice ratio, latitude and spin axis orientation, are presented and discussed. Resulted for a similar nonrotating, constant Sun orientation models are also included.

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