Co-orbital resonance with a migrating proto-giant planet

Pablo Lemos; Tabaré Gallardo

doi:10.1016/j.pss.2018.06.004

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arXiv · 1806.06005

Co-orbital resonance with a migrating proto-giant planet

Pablo Lemos·Tabaré Gallardo

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Abstract

In this work we pose the possibility that, at an early stage, the migration of a proto--giant planet caused by the presence of a gaseous circumstellar disk could explain the continuous feeding of small bodies into its orbit. Particularly, we study the probability of capture and permanence in co--orbital resonance of these small bodies, as planets of diverse masses migrate by interaction with the gaseous disk, and the drag induced by this disk dissipates energy from these small objects, making capture more likely. Also, we study the relevance of the circumplanetary disk, a structure formed closely around the planet where the gas density is enhanced, in the process of capture. It is of great interest for us to study the capture of small bodies in 1:1 resonance because it could account for the origin of the Trojan population, which has been proposed \citep{2011Icar..215..669K} as a mechanism of quasi-satellites and irregular satellites capture.

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Pablo Lemos, Tabaré Gallardo. 2018-06-15. Co-orbital resonance with a migrating proto-giant planet. https://doi.org/10.1016/j.pss.2018.06.004

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