Computer simulation of planet formation in a binary star system Terrestrial planets

Statistics – Computation

Scientific paper

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Binary Stars, Computerized Simulation, Planetary Evolution, Solar System, Terrestrial Planets, Astronomical Models, Jupiter (Planet), Mass Transfer, Protoplanets

Scientific paper

A model of planetary formation in a binary system with a small relative mass is constructed assuming mass transfer between components of different masses, and ejection of condensed moon-like planetoids through the inner Lagrange point of the primary Roche lobe. Newtonian equations of motion are integrated using the initial planetoid conditions as coordinates and the velocity of the inner Lagrangian point at the times of planetoid ejections. The terrestrial planets are formed by coagulation of planetoids with the effective radius of capture cross-section used as the input parameter in the computer simulation. Computations indicate the division of planetoids into four groups along their distances from the sun; the parameters of simulated planet orbits approximate known data and the interplanetary spacings agree with the Titius-Bode law.

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