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Constraints on Warm Jupiter Formation and Evolution from Planetary Companions

Presentation #309.02 in the session “Exoplanets and Systems: Orbital Dynamics 2”.

Published onOct 26, 2020
Constraints on Warm Jupiter Formation and Evolution from Planetary Companions

In recent years, Jupiter-sized exoplanets dubbed “warm Jupiters” (WJ) have been discovered orbiting with periods of 10-200 days, raising questions regarding their formation pathways and whether or not they form via similar pathways as “hot Jupiters”. Our work focuses on narrowing down these possible evolutionary pathways through dynamical constraints in WJ hosting systems that contain additional planetary companions. For observed WJ systems with companions, we derive limits on accretion rates and disk surface densities required for if the planets formed in situ with little migration. We also semi-analytically estimate potential disk migration paradigms for the planets residing in these systems. Using these estimates along with numerical simulations, we investigate and eliminate possible dynamical evolutionary pathways for the currently known compact inner rocky and three outer gaseous planets in the Kepler-89 system.


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