Computer Science
Scientific paper
Nov 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.500..673d&link_type=abstract
In: Proceedings of Asteroids, Comets, Meteors - ACM 2002. International Conference, 29 July - 2 August 2002, Berlin, Germany. Ed
Computer Science
Comets: Models
Scientific paper
The Deep Space One spacecraft flew by Comet 19P/Borrelly on September 22, 2001. The data revealed that the nucleus of Borrelly is vey dark and elongate, with complex topography. At DS1 encounter, the comet coma was dominated by a prominent jet. The IR spectra show a strong red-ward slope and a very hot (345K to 300K) dry surface. These data are consistent with Earth-based observations suggesting that <10% of the surface is actively sublimating. An OH production rate of about 2×1028 molecules/s was derived. We have developed a thermal evolution model of comet P/Borrelly, using a well tested one-dimensional code that solves the heat conduction and gas diffusion equations across an idealized spherical nucleus. The comet nucleus is composed by water, volatiles ices and dust in different proportions. The thermal behaviour of the comet was simulated and reproduced.
Capria Maria Teresa
Coradini Angioletta
de Sanctis Maria Cristina
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