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Planet-planet perturbations can cause planets' orbital elements to change on secular timescales. Previous work has evaluated the nodal precession rate for planets in the limit of low $\alpha$ (semi-major axis ratio, 0$<$$\alpha$$\leq$1).…

Earth and Planetary Astrophysics · Physics 2020-05-06 Nora Bailey , Daniel Fabrycky

The impact of the inner structure and thermal history of planets on their observable features, such as luminosity or magnetic field, crucially depends on the poorly known heat and charge transport properties of their internal layers. The…

Materials Science · Physics 2020-07-15 Federico Grasselli , Lars Stixrude , Stefano Baroni

The Hertzsprung-Russell diagram (HRD) is central to stellar astrophysics but has rarely been used to interpret planet formation. We extend the HRD concept to forming planets and study how solid and gas accretion, cooling/contraction, and…

Earth and Planetary Astrophysics · Physics 2026-05-20 Benedikt Gottstein , Gabriel-Dominique Marleau , Christoph Mordasini

Relatively long-period nonsynchronized planets---such as warm Jupiters---potentially retain the primordial rotation, eccentricity, and obliquity that might encapsulate information on planetary climate and formation processes. To date, there…

Earth and Planetary Astrophysics · Physics 2019-03-20 Kazumasa Ohno , Xi Zhang

The standard formation model of close-in low-mass planets involves efficient inward migration followed by growth through giant impacts after the protoplanetary gas disk disperses. While detailed N-body simulations have enhanced our…

Earth and Planetary Astrophysics · Physics 2025-07-08 Tadahiro Kimura , Eiichiro Kokubo , Yuji Matsumoto , Christoph Mordasini , Masahiro Ikoma

We study systems of close orbiting planets evolving under the influence of tidal circularization. It is supposed that a commensurability forms through the action of disk induced migration and orbital circularization. After the system enters…

Earth and Planetary Astrophysics · Physics 2015-05-28 J. C. B. Papaloizou

Recently discovered exoplanets on close-in orbits should have surface temperatures of 100's to 1000's of K. They are likely tidally locked and synchronously rotating around their parent stars and, if an atmosphere is absent, have surface…

Earth and Planetary Astrophysics · Physics 2015-05-28 Joost van Summeren , Clinton P. Conrad , Eric Gaidos

Interactions between magma oceans and overlying atmospheres on young rocky planets leads to an evolving feedback of outgassing, greenhouse forcing, and mantle melt fraction. Previous studies have predominantly focused on the solidification…

Earth and Planetary Astrophysics · Physics 2024-12-18 Harrison Nicholls , Tim Lichtenberg , Dan J. Bower , Raymond Pierrehumbert

The nature of sub-Neptunes remains unknown due to degeneracies in interior structure solutions. However, a statistical set of small planets with measured masses and radii can be used to test the planet formation theory prediction of large…

Earth and Planetary Astrophysics · Physics 2025-11-18 Remo Burn , Komal Bali , Caroline Dorn , Rafael Luque , Simon L. Grimm

With the discovery of TRAPPIST-1 and its seven planets within 0.06 au, the correct treatment of tidal interactions is becoming necessary. The eccentricity, rotation, and obliquity of the planets of TRAPPIST-1 are indeed the result of tidal…

Earth and Planetary Astrophysics · Physics 2021-01-04 Emeline Bolmont , Sylvain N. Breton , Gabriel Tobie , Caroline Dumoulin , Stéphane Mathis , Olivier Grasset

Rocky exoplanets accessible to characterisation often lie on close-in orbits where tidal heating within their interiors is significant, with the L 98-59 planetary system being a prime example. As a long-term energy source for ongoing mantle…

We present a set of numerical simulations of the dynamical evolution of compact planetary systems migrating in a protoplanetary disk whose inner edge is sculpted by the interaction with the stellar magnetic field, as described in Yu et al.…

Earth and Planetary Astrophysics · Physics 2025-10-03 Brad M. S. Hansen , Tze-Yeung Yu , Neel Nagarajan , Yasuhiro Hasegawa

Our understanding of the processes that are relevant to the formation and maintenance of habitable planetary systems is advancing at a rapid pace, both from observation and theory. The present review focuses on recent research that bears on…

Earth and Planetary Astrophysics · Physics 2014-03-27 Guillermo Gonzalez

A gap in exoplanets' radius distribution has been widely attributed to the photo-evaporation threshold of their progenitors' gaseous envelope. Giant impacts can also lead to substantial mass-loss. The outflowing gas endures tidal torque…

Earth and Planetary Astrophysics · Physics 2023-04-05 S. Wang , D. N. C. Lin

Our knowledge of planets' orbital dynamics, which was based on Solar System studies, has been challenged by the diversity of exoplanetary systems. Around cool and ultra cool dwarfs, the influence of tides on the orbital and spin evolution…

Earth and Planetary Astrophysics · Physics 2014-12-02 Emeline Bolmont , Sean N. Raymond , Franck Selsis

Thermal evolution models suggest that the luminosities of both Uranus and Neptune are inconsistent with the classical assumption of an adiabatic interior. Such models commonly predict Uranus to be brighter and, recently, Neptune to be…

Earth and Planetary Astrophysics · Physics 2021-07-21 Ludwig Scheibe , Nadine Nettelmann , Ronald Redmer

Earth's climate can be understood as a dynamical system that changes due to external forcing and internal couplings. Essential climate variables, such as surface air temperature, describe this dynamics. Our current interglacial, the…

Atmospheric and Oceanic Physics · Physics 2022-01-24 Beatrice Ellerhoff , Kira Rehfeld

The tidal interactions of planets affect the stellar evolutionary status and the constraint of their physical parameters by gyrochronology. In this work, we incorporate the tidal interaction and magnetic braking of the stellar wind into…

Solar and Stellar Astrophysics · Physics 2024-04-23 Shuai-Shuai Guo

The earliest atmospheres of rocky planets originate from extensive volatile release during magma ocean epochs that occur during assembly of the planet. These establish the initial distribution of the major volatile elements between…

Earth and Planetary Astrophysics · Physics 2021-04-28 Tim Lichtenberg , Dan J. Bower , Mark Hammond , Ryan Boukrouche , Patrick Sanan , Shang-Min Tsai , Raymond T. Pierrehumbert

As a planet ages it cools and its radius shrinks, at a rate set by the efficiency with which heat is transported from the interior out to space. The bottleneck for this transport is at the boundary between the convective interior and the…

Earth and Planetary Astrophysics · Physics 2015-06-17 E. Rauscher , A. P. Showman