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dc.contributor.authorHONG, Yu-Cian
hal.structure.identifierDepartment of Physics [Ithaca]
dc.contributor.authorLUNINE, Jonathan I.
hal.structure.identifierDepartment of Astronomy [Ithaca]
dc.contributor.authorNICHOLSON, Philip
hal.structure.identifierECLIPSE 2018
dc.contributor.authorRAYMOND, Sean N.
dc.date.conference2018-04-15
dc.description.abstractEnPlanet–planet scattering is the leading mechanism to explain the broad eccentricity distribution of observed giant exoplanets. Here we study the orbital stability of primordial giant planet moons in this scenario. We use N-body simulations including realistic oblateness and evolving spin evolution for the giant planets. We find that the vast majority (~80%–90% across all our simulations) of orbital parameter space for moons is destabilized. There is a strong radial dependence, as moons past are systematically removed. Closer-in moons on Galilean-moon-like orbits (<0.04 R Hill) have a good (~20%–40%) chance of survival. Destabilized moons may undergo a collision with the star or a planet, be ejected from the system, be captured by another planet, be ejected but still orbiting its free-floating host planet, or survive on heliocentric orbits as "planets." The survival rate of moons increases with the host planet mass but is independent of the planet's final (post-scattering) orbits. Based on our simulations, we predict the existence of an abundant galactic population of free-floating (former) moons.
dc.language.isoen
dc.title.enOrbital Dynamics of Exomoons During Planet–Planet Scattering
dc.typeCommunication dans un congrès
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP]
bordeaux.countryUS
bordeaux.conference.citySan Jose, CA
bordeaux.peerReviewedoui
hal.identifierhal-01769726
hal.version1
hal.invitednon
hal.proceedingsnon
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01769726v1
bordeaux.COinSctx_ver=Z39.88-2004&amp;rft_val_fmt=info:ofi/fmt:kev:mtx:journal&amp;rft.au=HONG,%20Yu-Cian&amp;LUNINE,%20Jonathan%20I.&amp;NICHOLSON,%20Philip&amp;RAYMOND,%20Sean%20N.&amp;rft.genre=unknown


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