Both planet planet disk planet 2 kozai simulations

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Unformatted text preview: Kozai interaction (applies to both planet-planet, disk-planet ) 2) Kozai simulations for planet-planet 3) Inclined disks and warped disks 4) Kozai simulations for disk-planet 5) other planet-planet mechanisms: scattering and secular chaos Warped disks: observations Observations of warped disk, by 20 degrees, beyond 120 AU (panel d) Launhardt et al 2001 Initial misalignment Orbit unchanged, disk warped due to interaction with other stars in the neighbourhood Batygin et al 2012 Tilting a disk: Magnetic tidal interaction Lai et al 2011 Theory zoo 1) explain Kozai interaction (applies to both planet-planet, disk-planet ) 2) Kozai simulations for planet-planet 3) Inclined disks and warped disks 4) Kozai simulations for disk-planet 5) other planet-planet mechanisms: scattering and secular chaos Warped disks (flat case) Classical Kozai oscillations for a flat disk Planet in an initially misaligned orbit Terquem C. 2013 Warped disks : I > 90! For higher initial disk warping, we get retrograde (I>90 deg) Terquem C. 2013 Warped disks: I >90 ! Very retrograde, possibly circularized (as e approaches unity tidal drag important) Terquem C. 2013 Theory zoo 1) explain Kozai interaction (applies to both planet-planet, disk-planet ) 2) Kozai simulations for planet-planet 3) Inclined disks and warped disks 4) Kozai simulations for disk-planet 5) other planet-planet mechanisms: scattering and secular chaos Planet-planet scattering Marzari et al 2002 Secular Chaos Exchange angular momentum, no close encounters allowed (wea torque) Wu and Lithwick 2011 Theory roadmap Was the disk initially misaligned ? Yes No Was it warped ? Yes Does the star have a (distant) companion? No Yes Are other Parts of disk Tidal migration perturbations and planets inwards (K. weak? Batygin 2012) Kozai interact, Yes throwing planets into Kozai oscillations, high obliquity if companion’s I > (C. Terquem 39.2 deg, get high 2013) obliquity orbits (Wu, Murray 2007) No More planets? Yes Planet-planet scattering,...
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This document was uploaded on 04/05/2014.

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