Computer Science
Scientific paper
Dec 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997arcn.rept...59w&link_type=abstract
Analysis of Returned Comet Nucleus Samples, Proceedings of a Workshop held at Milpitas, California, 16-18 January, 1989. Compil
Computer Science
Comets, Chondrites, Refractory Materials, Asteroids, Solar System, Solids, Interstellar Chemistry, Interstellar Matter, Meteoritic Composition, Planetary Composition, Protoplanets, Gravitational Collapse, High Temperature, Organic Materials, Planetary Nebulae, Composition (Property), Stellar Composition
Scientific paper
The raw materials of the solar system were interstellar gas, grains of ice, refractory dust, and organic material. Gravitational collapse caused these ingredients to fall together into a protosun and accretion disk (the solar nebula), out of which the planetary system grew. The raw materials have been preserved to differing degrees in the most primitive solar system bodies, asteroids and comets. The present paper deals mostly with the state of preservation of one of the primordial ingredients, the refractory dust. The study of samples of asteroids, in the form of chondritic meteorites, reveals that the dust component in the inner solar system was extensively altered by high-temperature events and processes before it was aggregated into chondritic planetesimals. The chondritic material was further altered by metamorphic heating in its parent planetesimals after accretion.
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