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The planets with a radius $<$ 4 $R$$_\oplus$ observed by the Kepler mission exhibit a unique feature, and propose a challenge for current planetary formation models. The tidal effect between a planet and its host star plays an essential…

Earth and Planetary Astrophysics · Physics 2018-05-15 Yao Dong , Jianghui Ji , Su Wang

This paper is concerned with collisionless aspects of the early evolution of model star clusters. The effects of mass loss through stellar evolution and of a steady tidal field are modelled using $N$-body simulations. Our results (which…

Astrophysics · Physics 2015-06-24 Toshiyuki Fukushige , Douglas C. Heggie

We revisit the tidal stability of extrasolar systems harboring a transiting planet and demonstrate that, independently of any tidal model, none but one (HAT-P-2b) of these planets has a tidal equilibrium state, which implies ultimately a…

Earth and Planetary Astrophysics · Physics 2009-11-13 B. Levrard , C. Winisdoerffer , G. Chabrier

Planets in the liquid-water habitable zone of low-mass stars experience large tidal forces, $10^3$ to $10^4$ times those on Earth, due to the small distance between the habitable zone and the host stars. Therefore, interior solid tides,…

Earth and Planetary Astrophysics · Physics 2025-07-08 Jiaru Shi , Jun Yang , Dorian S. Abbot , Yonggang Liu , Wanying Kang , Yufeng Lin

Tidal interactions between moons and planets can have major effects on the orbits, spins, and thermal evolution of the moons. In the Saturn system, tidal dissipation in the planet transfers angular momentum from Saturn to the moons, causing…

Earth and Planetary Astrophysics · Physics 2024-02-09 Jim Fuller , Tristan Guillot , Stephane Mathis , Carl Murray

The presence of a close, low-mass companion is thought to play a substantial and perhaps necessary role in shaping post-Asymptotic Giant Branch and Planetary Nebula outflows. During post-main-sequence evolution, radial expansion of the…

Solar and Stellar Astrophysics · Physics 2015-05-18 J. Nordhaus , D. S. Spiegel , L. Ibgui , J. Goodman , A. Burrows

We report results of a large set of N-body calculations aimed to study the evolution of multi-mass star clusters in external tidal fields. Our clusters start with the same initial mass-functions, but varying particle numbers, orbital types…

Astrophysics · Physics 2009-11-07 Holger Baumgardt , Junichiro Makino

The orbital decay of binaries containing a primary sub-giant or red giant star and a stellar or substellar companion is investigated. The tide raised in the primary by the companion leads to an exchange of angular momentum between the orbit…

Solar and Stellar Astrophysics · Physics 2018-09-19 Meng Sun , Phil Arras , Nevin N. Weinberg , Nicholas W. Troup , Steven R. Majewski

Earth-like planets have anelastic mantles, whereas giant planets may have anelastic cores. As for the fluid parts of a body, the tidal dissipation of such solid regions, gravitationally perturbed by a companion body, highly depends on its…

Earth and Planetary Astrophysics · Physics 2012-08-03 F. Remus , S. Mathis , J. -P. Zahn , V. Lainey

The stellar rotation has an essential role in modifying the structure of the star and, therefore, the way these different interplays arise. On the other hand, changes in orbits impact the star's rotation and its evolution. The evolution of…

Earth and Planetary Astrophysics · Physics 2024-04-11 Thiago M. Santiago , Sarah G. A. Barbosa , Francisco J. Cavalcante , Daniel B. de Freitas

This paper presents a new scheme to treat escaping stars in the orbit-averaged Fokker-Planck models of globular star clusters in a galactic tidal field. The existence of a large number of potential escapers, which have energies above the…

Astrophysics of Galaxies · Physics 2015-06-03 Koji Takahashi , Holger Baumgardt

The radii of some transiting extrasolar giant planets are larger than would be expected by the standard theory. We address this puzzle with the model of coupled radius-orbit tidal evolution developed by \citet{Ibgui_and_Burrows_2009}. The…

Earth and Planetary Astrophysics · Physics 2011-01-17 Laurent Ibgui , David S. Spiegel , Adam Burrows

In previous papers of this series, we developed a new algorithm for modeling the formation of star clusters in galaxy formation simulations. Here we investigate how dissolution of bound star clusters affects the shape of the cluster mass…

Astrophysics of Galaxies · Physics 2019-05-21 Hui Li , Oleg Y. Gnedin

In close two-body astrophysical systems, such as binary stars or Hot Jupiter systems, tidal interactions often drive dynamical evolution on secular timescales. Many host stars and presumably giant gaseous planets feature a convective…

Solar and Stellar Astrophysics · Physics 2021-09-20 A. Astoul , A. J. Barker

The emergence of orbital resonances among planets is a natural consequence of the early dynamical evolution of planetary systems. While it is well-established that convergent migration is necessary for mean-motion commensurabilities to…

Earth and Planetary Astrophysics · Physics 2023-04-05 Konstantin Batygin , Antoine C. Petit

According to core-accretion formation models, the conditions under which gas giants will form around M dwarfs are very restrictive. Also, the correlation of the occurrence of these planets with the metallicity of host stars is still unknown…

Earth and Planetary Astrophysics · Physics 2022-10-05 Jaime A. Alvarado-Montes

Context. Tidal dissipation in planets and in stars is one of the key physical mechanisms that drive the evolution of planetary systems. Aims. Tidal dissipation properties are intrisically linked to the internal structure and the rheology of…

Earth and Planetary Astrophysics · Physics 2015-06-17 P. Auclair-Desrotour , C. Le Poncin-Lafitte , S. Mathis

We examine the cosmic evolution of a stellar initial mass function (IMF) in galaxies that varies with the Jeans mass in the interstellar medium, paying particular attention to the K-band stellar mass to light ratio (M/L_K) of present-epoch…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Desika Narayanan , Romeel Davé

We present an extended version of the Constant Time Lag analytical approach for the tidal evolution of circumbinary planets introduced in our previous work. The model is self-consistent, in the sense that all tidal interactions between…

Earth and Planetary Astrophysics · Physics 2020-01-29 F. A. Zoppetti , A. M. Leiva , C. Beaugé

We outline a mechanism that explains the observed lack of circumbinary planets (CBPs) via coupled stellar-tidal evolution of isolated binary stars. Tidal forces between low-mass, short-period binary stars on the pre-main sequence slow the…

Solar and Stellar Astrophysics · Physics 2018-05-23 David P. Fleming , Rory Barnes , David E. Graham , Rodrigo Luger , Thomas R. Quinn
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