Pumping of a Planetesimal Disc by a Rapidly Migrating Planet

Abstract

We examine the effect of a rapidly migrating protoplanet on a ring of planetesimals. The eccentricities of the planetesimals are usually increased by $\Delta e\in (0.01,0.1)$, with the exact increase being proportional to the protoplanet's mass, and inversely proportional to its migration rate. The eccentricity distribution is also substantially changed from a Rayleigh distribution. We discuss the possible implications for further planet formation, and suggest that the rapid passage of a protoplanet may not prevent the planetesimal disc from forming further planets.

Five pages, two figures, accepted by MNRAS

References in corpus (2)

• Runaway migration and the formation of hot Jupiters
• A reduced efficiency of terrestrial planet formation following giant planet migration

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