Early Thermal History of Planetesimals

Abstract

Planets are formed by accretion of planetesimals.The thermal history of planets are partly depending onthe thermal evolution of planetesimals especially whenthe size of proto-planet is still small, sincethe planetesimal's internal thermal energy is addedto the proto-planet's interior if the accretingplanetesimal is not fully disrupted by the impact.Thus, we construct a new model for thermal evolutionof planetesimals and evaluate the effect onto the thermalevolution of proto-planet.