An Extended Thermal History (100 MA Long) for Asteroid 4 Vesta Based on Radionuclide and Collisional Heating

Details An Extended Thermal History (100 MA Long) for Asteroid 4 Vesta Based on Radionuclide and Collisional Heating An Extended Thermal History (100 MA Long) for Asteroid 4 Vesta Based on Radionuclide and Collisional Heating

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27..407g&link_type=abstract

Lunar and Planetary Science, volume 27, page 407

Physics

1

Aluminum-26, Asteroids, Eucrite Parent Body, Heating, Vesta

Scientific paper

Thermal modeling has so far been done on small asteroids with radii of 100 km or less. In this study, we attempt to model a larger body, asteroid 4 Vesta, which has a radius of 275 km. Previous models have only attempted to explain thermal metamorphism and aqueous alteration, not igneous activity and core formation. In tracing the thermal evolution of a body such as Vesta, it becomes important to account for the latent heat of fusion and the increased specific heat capacity of melts, as well as to consider the possible effects of collisional heating and the redistribution of radioactive nuclides (26Al and 60Fe) during differentiation.

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