Concerning thermal tides on hot Jupiters [PDF]
arXiv, 2009 By analogy with a mechanism proposed by Gold and Soter to explain the retrograde rotation of Venus, Arras and Socrates suggest that thermal tides may excite hot jovian exoplanets into nonsynchronous rotation, and perhaps also noncircular orbits. It is shown here that because of the absence of a solid surface above the convective core of a jovian planet,
arxiv
Metal Pollution in Sun-like Stars from Destruction of Ultra–short-period Planets
The Astrophysical Journal LettersChemical evidence indicates that an appreciable fraction of Sun-like stars have engulfed rocky planets during their main-sequence lifetimes. We investigate whether the tidal evolution and destruction of ultra–short-period planets (USPs) can explain this ...
Christopher E. O’Connor, Dong Lai
doaj +1 more source
The Telltale Heartbeat: Detection and Characterization of Eccentric Orbiting Planets via Tides on their Host Star [PDF]
, 2018 We present an analytic description of tides raised on a star by a small orbiting body. In particular, we highlight the disproportionate effect of eccentricity and thus the scope for using these tides to detect and characterise the orbits of exoplanets and brown dwarfs.
arxiv +1 more source
Tidal Synchronization Trapping in Stars and Planets with Convective Envelopes
The Astrophysical JournalTidal torques can alter the spins of tidally interacting stars and planets, usually over shorter timescales than the tidal damping of orbital separations or eccentricities.
Janosz W. Dewberry
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Tides and angular momentum redistribution inside low-mass stars hosting planets: a first dynamical model [PDF]
, 2016 We introduce a general mathematical framework to model the internal transport of angular momentum in a star hosting a close-in planetary/stellar companion. By assuming that the tidal and rotational distortions are small and that the deposit/extraction of angular momentum induced by stellar winds and tidal torques are redistributed solely by an ...
arxiv +1 more source
The Feasibility of Asynchronous Rotation via Thermal Tides for Diverse Atmospheric Compositions
The Planetary Science JournalThe equilibrium rotation rate of a planet is determined by the sum of torques acting on its solid body. For planets with atmospheres, the dominant torques are usually the gravitational tide, which acts to slow the planet’s rotation rate, and the ...
Andrea M. Salazar, Robin Wordsworth
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Planet–Planet Scattering and Von Zeipel–Lidov–Kozai Migration—The Dynamical History of HAT-P-11
The Astrophysical JournalThe two planets of the HAT-P-11 system represent fascinating dynamical puzzles due to their significant eccentricities and orbital misalignments. In particular, HAT-P-11 b is in a close-in orbit in which tides should have circularized well within the age
Tiger Lu +6 more
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Tidal Effects on the Habitability of Exoplanets: The Case of GJ 581 d [PDF]
arXiv, 2010 Tides may be crucial to the habitability of exoplanets. If such planets form around low-mass stars, then those in the circumstellar habitable zone will be close enough to their host stars to experience strong tidal forces. Tides may result in orbital decay and circularization, evolution toward zero obliquity, a fixed rotation rate (not necessarily ...
arxiv
Spin Dynamics of Planets in Resonant Chains
The Astrophysical JournalAbout a dozen exoplanetary systems have been discovered with three or more planets participating in a sequence of mean-motion resonances. The unique and complex architectures of these so-called “resonant chains” motivate efforts to characterize their ...
Sarah C. Millholland +2 more
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The PFS View of TOI-677 b: A Spin–Orbit Aligned Warm Jupiter in a Dynamically Hot System
The Astronomical JournalTOI-677 b is part of an emerging class of “tidally detached” gas giants ( a / R _⋆ ≳ 11) that exhibit large orbital eccentricities and yet low stellar obliquities. Such sources pose a challenge for models of giant planet formation, which must account for
Qingru Hu +11 more
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