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- W2130473623 abstract "A migrating planet can capture planetesimals into mean motion resonances. However, resonant trapping can be prevented when the drift or migration rate is sufficiently high. Using a simple Hamiltonian system for first and second order resonances, we explore how the capture probability depends on the order of the resonance, drift rate and initial particle eccentricity. We present scaling factors as a function of the planet mass and resonance strength to estimate the planetary migration rate above which the capture probability drops to less than 1/2. Applying our framework to multiple extra solar planetary systems that have two planets locked in resonance, we estimate lower limits for the outer planet’s migration rate allowing resonance capture of the inner planet. Mean motion resonances are comprised of multiple resonant subterms. We find that the corotation subterm can reduce the probability of capture when the planet eccentricity is above a critical value. We present factors that can be used to estimate this critical planet eccentricity. Applying our framework to the migration of Neptune, we find that Neptune’s eccentricity is near the critical value that would make its 2:1 resonance fail to capture twotinos. The capture probability is affected by the separation between resonant subterms and so is also a function of the precession rates of the longitudes of periapse of both planet and particle near resonance. Subject headings: celestial mechanics" @default.
- W2130473623 created "2016-06-24" @default.
- W2130473623 creator A5084285136 @default.
- W2130473623 date "2005-12-15" @default.
- W2130473623 modified "2023-09-23" @default.
- W2130473623 title "Reducing the probability of capture into resonance" @default.
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- W2130473623 doi "https://doi.org/10.1111/j.1365-2966.2005.09826.x" @default.
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