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Planetary System Disruption Within Wide Binary Star Systems

dc.contributor.authorKAIB, N. A.
hal.structure.identifiersSE 2011
dc.contributor.authorRAYMOND, Sean N.
dc.contributor.authorDUNCAN, M. J.
dc.date.issued2011-10
dc.date.conference2011
dc.description.abstractEnBecause they are so weakly bound, the orbits of wide binary stars evolve greatly under the influence of the Galactic tide and impulses from passing field stars. Most systems eventually pass through phases of high eccentricity, and this can have catastrophic consequences for the planets orbiting within these binary systems. During these eccentric phases, close encounters between the two binary members occur, and any planets orbiting the stars can be strongly perturbed. We use numerical simulations to study the planetary dynamics within such wide binaries, and we find that dynamical instabilities are common. For planetary configurations like our own solar system, we find that a wide binary companion (a > 1000 AU) will trigger planetary ejections in 1/3 to 1/2 of all systems. Interestingly, these ejections and instabilities typically occur only after hundreds of Myrs or Gyrs of evolution, possibly generating events similar to the LHB instability that occurred in our own solar system.
dc.language.isoen
dc.source.title2011epsc.conf..542K
dc.title.enPlanetary System Disruption Within Wide Binary Star Systems
dc.typeCommunication dans un congrès
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP]
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP]
bordeaux.page542
bordeaux.countryFR
bordeaux.title.proceeding2011epsc.conf..542K
bordeaux.conference.cityNantes
bordeaux.peerReviewedoui
hal.identifierhal-00666855
hal.version1
hal.invitednon
hal.proceedingsoui
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00666855v1
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