TILTING SATURN WITHOUT TILTING JUPITER: CONSTRAINTS ON GIANT PLANET MIGRATION
نویسندگان
چکیده
منابع مشابه
Tilting Saturn. I. Analytic Model
The tilt of Saturn’s spin axis to its orbit plane is 26N7, while that of Jupiter is only 3N1. We offer an explanation for this puzzling difference owing to gravitational perturbations of Saturn by the planet Neptune. A similarity between the precession period of Saturn’s spin axis and the 1:87 ; 10 yr precession period of Neptune’s slightly inclined orbit plane implicates a resonant interaction...
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We argue that the gas giants Jupiter and Saturn were both formed with their rotation axes nearly perpendicular to their orbital planes, and that the large current tilt of the ringed planet was acquired in a post-formation event. We identify the responsible mechanism as trapping into a secular spin-orbit resonance that couples the angular momentum of Saturn’s rotation to that of Neptune’s orbit....
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Bootstrap tilting con dence intervals could be the method of choice in many applications for reasons of both speed and accuracy With the right implementation tilting intervals are times as fast as bootstrap BC a limits in terms of the number of bootstrap samples needed for comparable simulation accuracy Thus bootstrap samples might su ce instead of Tilting limits have other desirable properties...
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X iv :a st ro -p h/ 04 03 57 4v 1 2 4 M ar 2 00 4 We extend the core-accretion model of giant gaseous planets by Pollack et al. ([1996]) to include migration, disc evolution and gap formation. Starting with a core of a fraction of an Earth’s mass located at 8 AU, we end our simulation with the onset of runaway gas accretion when the planet is at 5.5 AU 1 Myr later. This timescale is about a fac...
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Let Uq denote the quantum group associated with a finite dimensional semisimple Lie algebra. Assume that q is a complex root of unity of odd order and that Uq is obtained via Lusztig’s q-divided powers construction. We prove that all regular projective (tilting) modules for Uq are rigid, i.e., have identical radical and socle filtrations. Moreover, we obtain the same for a large class of Weyl m...
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ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 2015
ISSN: 1538-3881
DOI: 10.1088/0004-6256/150/5/157