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1 results

  • Runaway migration in a multiple-protoplanet system

  • Hui Zhang, Ji-Lin Zhou
  • Journal:
    Proceedings of the International Astronomical Union / Volume 3 / Issue S249 / October 2007
    Published online by Cambridge University Press:
    01 October 2007, pp. 413-418
    Print publication:
    October 2007
    • Article
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  • We investigate the migration of two giant planets embedded in a proto-stellar disk. The inner planet(initially located at R10=1) is of 1 Jupiter mass and the outer one(R20=1.5) is of 1 Saturn mass. We find that due to the existence of the inner massive planet, the outer planet can not open a clear gap. Instead of an inward migration and being captured by the mean motion resonance of the inner planet, the outer planet undergoes an outward runaway migration. We conclude that this runaway migration is caused by the co-rotation torque in the co-orbital region of the outer planet and sustained by the wave(flow) driven by the inner massive planet.