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Close-in giant planets represent the most significant evidence of planetary migration. If large exomoons form around migrating giant planets which are more stable (e.g. those in the Solar System), what happens to these moons after migration…

地球与行星天体物理 · 物理学 2019-12-25 Mario Sucerquia , Jaime A. Alvarado-Montes , Jorge I. Zuluaga , Nicolás Cuello , Cristian Giuppone

Transiting planets are generally close enough to their host stars that tides may govern their orbital and thermal evolution of these planets. We present calculations of the tidal evolution of recently discovered transiting planets and…

天体物理学 · 物理学 2009-11-13 Brian Jackson , Rory Barnes , Richard Greenberg

The stability of Earth's climate on geological timescales is enabled by the carbon-silicate cycle that acts as a negative feedback mechanism stabilizing surface temperatures via the intake and outgas of atmospheric carbon. On Earth, this…

地球与行星天体物理 · 物理学 2018-05-02 Diana Valencia , Vivian Yun Yan Tan , Zachary Zajac

We study the orbital evolution of a three planet system with masses in the super-Earth regime resulting from the action of tides on the planets induced by the central star which cause orbital circularization. We consider systems either in…

地球与行星天体物理 · 物理学 2015-06-19 John C. B. Papaloizou

Moons orbiting extrasolar planets are the next class of object to be observed and characterized for possible habitability. Like the host-planets to their host-star, exomoons have a limiting radius at which they may be gravitationally bound,…

地球与行星天体物理 · 物理学 2015-06-16 Natalie R. Hinkel , Stephen R. Kane

We investigate how the evolution of the stellar spin rate affects, and is affected by, planets in close orbits, via star-planet tidal interactions. To do this, we used a standard equilibrium tidal model to compute the orbital evolution of…

地球与行星天体物理 · 物理学 2015-06-05 Emeline Bolmont , Sean N. Raymond , Jeremy Leconte , Sean P. Matt

We model a tidally forced star or giant planet as a Maclaurin spheroid, decomposing the motion into the normal modes found by Bryan (1889). We first describe the general prescription for this decomposition and the computation of the tidal…

太阳与恒星天体物理 · 物理学 2014-12-09 Harry J. Braviner , Gordon I. Ogilvie

A gas giant planet which survives the giant branch stages of evolution at a distance of many au and then is subsequently perturbed sufficiently close to a white dwarf will experience orbital shrinkage and circularization due to star-planet…

地球与行星天体物理 · 物理学 2019-09-25 Dimitri Veras , Jim Fuller

Stellar insolation has been used as the main constraint on a planet's habitability. However, as more Earth-like planets are discovered around low-mass stars (LMSs), a re-examination of the role of tides on the habitability of exoplanets has…

地球与行星天体物理 · 物理学 2015-03-17 René Heller , Jérémy Leconte , Rory Barnes

Tidal friction is thought to be important in determining the long-term spin-orbit evolution of short-period extrasolar planetary systems. Using a simple model of the orbit-averaged effects of tidal friction, we study the evolution of…

地球与行星天体物理 · 物理学 2009-04-27 A. J. Barker , G. I. Ogilvie

Any model of tides is based on a specific hypothesis of how lagging depends on the tidal-flexure frequency. For example, Gerstenkorn (1955), MacDonald (1964), and Kaula (1964) assumed constancy of the geometric lag angle, while Singer…

天体物理学 · 物理学 2012-12-04 Michael Efroimsky , Valery Lainey

Semidiurnal atmospheric thermal tides are important for terrestrial exoplanets in the habitable zone of their host stars. With solid tides, they torque these planets, thus contributing to determine their rotation states as well as their…

地球与行星天体物理 · 物理学 2017-10-20 Pierre Auclair-Desrotour , Stéphane Mathis , Jacques Laskar

The orbit of the outer satellite Alexhelios of (216) Kleopatra is already constrained by adaptive-optics astrometry, obtained with the VLT/SPHERE instrument. However, there is also a preceding occultation event in 1980 attributed to this…

地球与行星天体物理 · 物理学 2022-01-19 M. Brož , J. Ďurech , B. Carry , F. Vachier , F. Marchis , J. Hanuš , L. Jorda , P. Vernazza , D. Vokrouhlický , M. Walterová , R. Behrend

We have studied long period, 206 and 412 day, variations in tidal sea level corresponding to various moon phases collected from five observatories in the Northern and Southern hemispheres. Variations in sea level in the Bay of Fundy, on the…

地球物理 · 物理学 2012-05-07 Yu. N. Avsyuk , L. A. Maslov

We analyze the long-term tidal evolution of a single-planet system through the use of numerical simulations and averaged equations giving the variations of semi-major axis and eccentricity of the relative orbit. For different types of…

地球与行星天体物理 · 物理学 2015-05-13 Adrian Rodriguez , Sylvio Ferraz-Mello

By solving Laplace's tidal equations with friction terms we study the surface tide on a rapidly rotating body. When $\epsilon=\Omega^2 R/g$, the square of the ratio of dynamical timescale to rotational timescale, is very small for the Earth…

太阳与恒星天体物理 · 物理学 2019-02-13 Xing Wei

The distribution of eccentricities e of extra-solar planets with semi-major axes a > 0.2 AU is very uniform, and values for e are relatively large, averaging 0.3 and broadly distributed up to near 1. For a < 0.2 AU, eccentricities are much…

天体物理学 · 物理学 2008-01-07 Brian Jackson , Richard Greenberg , Rory Barnes

Tidal dissipation, which is directly linked to internal structure, is one of the key physical mechanisms that drive systems evolution and govern their architecture. A robust evaluation of its amplitude is thus needed to predict evolution…

地球与行星天体物理 · 物理学 2014-12-10 F. Remus , S. Mathis , J. -P. Zahn , V. Lainey

Tidal friction has long been recognized to circularize the orbits of binary stars over time. In this study, we use the observed distribution of orbital eccentricities in populations of binary stars to probe tidal dissipation. In contrast to…

太阳与恒星天体物理 · 物理学 2022-09-26 Kaloyan M. Penev , Joshua A. Schussler

The habitable zone for exomoons with Earth-like properties is a non-trivial manifold, compared to that of Earth-like exoplanets. The presence of tidal heating, eclipses and planetary illumination in the exomoon energy budget combine to…

地球与行星天体物理 · 物理学 2016-02-17 Duncan Forgan , Vera Dobos