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How Jupiter's Two-Phase Gas-Driven Migration Shaped the Inner Solar System

hal.structure.identifiersSE 2011
dc.contributor.authorRAYMOND, Sean N.
dc.contributor.authorWALSH, K.
dc.contributor.authorMORBIDELLI, A.
dc.contributor.authorMANDELL A. O'BRIEN, D.
dc.date.conference2011
dc.description.abstractEnAccretion simulations cannot adequately reproduce the terrestrial planets, in particular Mars' small mass [1]. Currently, the best solution to this problem assumes that the terrestrial building blocks were initially concentrated in a narrow annulus from 0.7-1 AU [2]. These initial conditions could have been sculpted by Jupiter's two-phase migration in the gaseous Solar Nebula: Jupiter first migrated inward due to standard type 2 torques, then back outward once Saturn grew and was trapped in 2:3 resonance [3]. If the turnaround point or "tack" occurred when Jupiter was at 1.5 AU then the inner disk of material would be truncated at 1 AU, forming a small Mars (Figure 1). In this scenario, the asteroid belt was first emptied and then re-filled by Jupiter: S-type asteroids (red in Figure 1) originated between 1-3 AU and C-types (blue) originated between the giant planets and beyond Neptune [4]. In the absence of migration, primitive C-type asteroids represent a plausible source for Earth's water [5]. In the context of the 'grand tack' model [4], this same population may still deliver water to the growing Earth: for every C-type planetesimal injected into the asteroid belt, ~10 were scattered onto eccentric orbits that intersect the terrestrial planet- forming region. These scattered C-types can deliver several oceans of water to the growing Earth.
dc.language.isoen
dc.title.enHow Jupiter's Two-Phase Gas-Driven Migration Shaped the Inner Solar System
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.countryFR
bordeaux.peerReviewedoui
hal.identifierhal-00681655
hal.version1
hal.invitedoui
hal.proceedingsoui
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00681655v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.au=RAYMOND,%20Sean%20N.&WALSH,%20K.&MORBIDELLI,%20A.&MANDELL%20A.%20O'BRIEN,%20D.&rft.genre=unknown


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