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Solar system dynamics
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In this paper, the two-body problem and the restricted three body problem are considered. And the disturbing function is extended to include the spin-orbit coupling and the resonance perturbations.Abstract:
Preface 1 Structure of the solar system 2 The two-body problem 3 The restricted three-body problem 4 Tides, rotation and shape 5 Spin-orbit coupling 6 The disturbing function 7 Secular perturbations 8 Resonant perturbations 9 Chaos and long-term evolution 10 Planetary rings Appendix A Solar system data Appendix B Expansion of the disturbing function Indexread more
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Understanding WASP-12b
Avery Bailey,Jeremy Goodman +1 more
TL;DR: In this article, the orbital period of the hot Jupiter WASP-12b is apparently changing, and the authors study whether this reflects orbital decay due to tidal dissipation in the star, or apsidal precession of a slightly eccentric orbit.
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Asteroid 2015 DB216: a recurring co-orbital companion to Uranus
TL;DR: In this paper, a covariance matrix-based Monte Carlo scheme is applied to study the short-term stability of a minor body trapped in a temporary co-orbital resonance with Uranus.
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Growth of a Peanut-shaped Bulge via Resonant Trapping of Stellar Orbits in the Vertical Inner Lindblad Resonances
TL;DR: In this paper, a simple resonant Hamiltonian model for the vertical response of a stellar disk to the growth of a bar perturbation is presented, which predicts that stars on outer side of the resonance are lifted higher than stars on the inner side, offering an explanation for the sharp outer edge of the boxy/peanut.
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Cometary impactors on the TRAPPIST-1 planets can destroy all planetary atmospheres and rebuild secondary atmospheres on planets f, g, and h
Quentin Kral,Mark C. Wyatt,Amaury H. M. J. Triaud,Amaury H. M. J. Triaud,Sebastian Marino,Philippe Thébault,Oliver Shorttle +6 more
TL;DR: In this article, the effect of potential cometary impacts on the TRAPPIST-1 planets and how they would affect the primordial atmospheres of these planets were investigated with a view to assessing whether any sort of life has a chance to develop.
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Obliquity evolution of extrasolar terrestrial planets
Keiko Atobe,Shigeru Ida +1 more
TL;DR: In this article, the authors investigated the evolution of terrestrial planets in habitable zones (at ∼1 AU) in extrasolar planetary systems, due to tidal interactions with their satellite and host star with wide varieties of satellite-to-planet mass ratio (m / M p ) and initial obliquity ( γ 0 ), through numerical calculations and analytical arguments.