High temperatures in the early solar nebula

Details High temperatures in the early solar nebula High temperatures in the early solar nebula

Jul 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988sci...241..565b&link_type=abstract

Science (ISSN 0036-8075), vol. 241, July 29, 1988, p. 565-567. NASA-supported research.

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Astronomical Models, Computational Astrophysics, Solar System, Solar Temperature, Stellar Evolution, Accretion Disks, Asteroids, Gravitational Collapse, Meteoroids, Planetary Evolution

Scientific paper

One fundamental controversy about terrestrial planet and asteroid formation is the discrepancy between meteoritical evidence for high temperatures (1500K to 2000K) in the inner solar nebula, and much lower theoretical temperature predictions on the basis of models of viscous accretion disks that neglect compressional heating of infalling gas. It is shown here that rigorous numerical calculations of the collapse of a rotating, three-dimensional presolar nebula are capable of producing temperatures on the order of 1500K in the asteroid region (2.5 astronomical units), in either nearly axisymmetric or strongly nonaxisymmetric nebula models. The latter models may permit significant thermal cycling of solid components in the early inner solar nebula.

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