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A planet is formed within a protoplanetary disk. Recent observations have revealed substructures such as gaps and rings, which may indicate forming planets within the disk. Due to disk--planet interaction, the planet migrates within the…

Earth and Planetary Astrophysics · Physics 2020-04-08 Kazuhiro D. Kanagawa , Hideko Nomura , Takashi Tsukagoshi , Takayuki Muto , Ryohei Kawabe

When two planets are born in a protoplanetary disk, they may enter into a mean-motion resonance as a consequence of the convergent planetary migration. The formation of mean-motion resonances is important for understanding how the planetary…

Earth and Planetary Astrophysics · Physics 2020-05-13 Kazuhiro D. Kanagawa , Ewa Szuszkiewicz

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

The evolution of exoplanetary systems with a close-in planet is ruled by the tides mutually raised on the two bodies and by the magnetic braking of the host star. This paper deals with consequences of this evolution and some features that…

Earth and Planetary Astrophysics · Physics 2023-07-05 S. Ferraz-Mello , C. Beaugé

Many of the most intriguing features, including spirals and cavities, in the current disc observations are found in binary systems like GG Tau, HD 142527 or HD 100453. Such features are evidence of the dynamic interaction between binary…

Earth and Planetary Astrophysics · Physics 2024-07-11 Anna B. T. Penzlin , Richard A. Booth , Richard P. Nelson , Christoph M. Schäfer , Wilhelm Kley

The majority of the discovered transiting circumbinary planets are located very near the innermost stable orbits permitted, raising questions about the origins of planets in such perturbed environments. Most favored formation scenarios…

Earth and Planetary Astrophysics · Physics 2019-06-12 Adam P. Sutherland , Kaitlin M. Kratter

The torques exerted by a locally isothermal disk on an embedded planet lead to rapid inward migration. Recent work has shown that modeling the thermodynamics without the assumption of local isothermality reveals regions where the net torque…

Earth and Planetary Astrophysics · Physics 2015-06-04 Brandon Horn , Wladimir Lyra , Mordecai-Mark Mac Low , Zsolt Sándor

Discs in binaries have a complex behavior because of the perturbations of the companion star. Planet formation in binary-star systems both depend on the companion star parameters and on the properties of the circumstellar disc. An eccentric…

Earth and Planetary Astrophysics · Physics 2015-06-03 F. Marzari , C. Baruteau , H. Scholl , P. Thebault

Planets with several Earth masses and a few day orbital periods have been discovered through radial velocity and transit surveys. Regardless of their formation mechanism, a key evolution issue is the efficiency of their retention near their…

Earth and Planetary Astrophysics · Physics 2015-03-19 Randy O. Laine , Douglas N. C. Lin

Recent observations have indicated a strong connection between compact ($a \lesssim 0.5$ au) super-Earth and mini-Neptune systems and their outer ($a \gtrsim$ a few au) giant planet companions. We study the dynamical evolution of such inner…

Earth and Planetary Astrophysics · Physics 2021-09-22 Bonan Pu , Dong Lai

In this letter we consider the evolution of a planetary system around a star inside a wide binary. We simulate numerically the evolution of the planetary orbits for both co-planar and highly-inclined systems. We find that the Kozai…

Astrophysics · Physics 2008-11-26 Daniel Malmberg , Melvyn B. Davies , John E. Chambers

Context. More than 60 planets have been discovered so far in systems that harbour two stars, some of which have binary semi-major axes as small as 20 au. It is well known that the formation of planets in such systems is strongly influenced…

Earth and Planetary Astrophysics · Physics 2016-11-25 M. Gyergyovits , S. Eggl , E. Pilat - Lohinger , Ch. Theis

Most detected planet-bearing binaries are in wide orbits, for which a high inclination, $i_B$, between the binary orbital plane and the plane of the planetary disk around the primary is likely to be common. In this paper, we investigate the…

Earth and Planetary Astrophysics · Physics 2015-05-27 Ji-Wei Xie , Matthew Payne , Philippe Thebault , Ji-Lin Zhou , Jian Ge

The existence of planets orbiting a central binary star system immediately raises questions regarding their formation and dynamical evolution. Recent discoveries of circumbinary planets by the Kepler space telescope has shown that some of…

Earth and Planetary Astrophysics · Physics 2015-09-09 Wilhelm Kley , Nader Haghighipour

The main properties of the observed extrasolar planets are reviewed with respect to their relevance to the formation scenario of planetary systems. Results of numerical computations of embedded planets in viscously evolving disks are…

Astrophysics · Physics 2007-05-23 Willy Kley

We investigate the dynamical evolution of a Jovian--mass planet injected into an orbit highly inclined with respect to its nesting gaseous disk. Planet--planet scattering induced by convergent planetary migration and mean motion resonances…

Earth and Planetary Astrophysics · Physics 2014-11-20 F. Marzari , Andrew F. Nelson

In this paper, we study the behavior of a pair of co-orbital planets, both orbiting a central star on the same plane and undergoing tidal interactions. Our goal is to investigate final orbital configurations of the planets, initially…

Earth and Planetary Astrophysics · Physics 2015-06-16 Adrián Rodríguez , Cristian A. Giuppone , Tatiana A. Michtchenko

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…

Earth and Planetary Astrophysics · Physics 2015-06-05 Emeline Bolmont , Sean N. Raymond , Jeremy Leconte , Sean P. Matt

The evolution of circumstellar discs is influenced by their surroundings. The relevant processes include external photoevaporation due to nearby stars, and dynamical truncations. The impact of these processes on disc populations depends on…

Astrophysics of Galaxies · Physics 2025-10-03 Francisca Concha-Ramírez , Maite J. C. Wilhelm , Simon Portegies Zwart

We present numerical simulations of terrestrial planet formation that examine the growth continuously from planetesimals to planets in the inner Solar System. Previous studies show that the growth will be inside-out, but it is still common…

Earth and Planetary Astrophysics · Physics 2019-08-05 Kevin J. Walsh , Harold F. Levison