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To date, several exoplanets have been discovered orbiting stars with close binary companions (a~<30 AU). The fact that planets can form in these dynamically challenging environments implies that planet formation must be a robust process.…

Earth and Planetary Astrophysics · Physics 2015-06-23 Hannah Jang-Condell

We investigate the orbital dynamics of circumbinary planetary systems with two planets around a circular or eccentric orbit binary. The orbits of the two planet are initially circular and coplanar to each other, but misaligned with respect…

Earth and Planetary Astrophysics · Physics 2021-12-15 Cheng Chen , Stephen H. Lubow , Rebecca G. Martin

The discovery of planets in close orbits around binary stars raises questions about their formation. It is believed that these planets formed in the outer regions of the disc and then migrated through planet-disc interaction to their…

Earth and Planetary Astrophysics · Physics 2018-08-17 Daniel Thun , Wilhelm Kley

The search for satellites around exoplanets represents one of the greatest challenges in advancing the characterization of planetary systems. Currently, we can only detect massive satellites, which resemble additional planetary companions…

Earth and Planetary Astrophysics · Physics 2023-11-06 C. Lazzoni , K. W. Rice , A. Zurlo , S. Hinkley , S. Desidera

Apsidal precession in stellar binaries is the main non-Keplerian dynamical effect impacting the radial-velocities of a binary star system. Its presence can notably hide the presence of orbiting circumbinary planets because many fitting…

Earth and Planetary Astrophysics · Physics 2023-04-07 Thomas A. Baycroft , Amaury H. M. J. Triaud , João Faria , Alexandre C. M. Correia , Matthew R. Standing

Context. The presence of a stellar companion can strongly influence the architecture and long-term stability of planetary systems. Motivated by the discovery of exoplanets exhibiting extremely high eccentricities (e >= 0.8) in systems with…

Earth and Planetary Astrophysics · Physics 2026-02-11 Milenne Ávila-Bravo , Carolina Charalambous , Claudia Aguilera-Gómez

Circumbinary planets (CBPs) provide a unique window into planet formation and dynamical evolution in complex gravitational environments. Their orbits are shaped not only by the protoplanetary disk but also by the perturbations from two…

Solar and Stellar Astrophysics · Physics 2026-01-15 Liz Holzknecht , Smadar Naoz , Cheyanne Shariat

I present an homogeneous determination of the physical properties of 14 transiting extrasolar planetary systems for which good data are available. The input quantities for each system are the results of the light curve analyses (Paper 1),…

Astrophysics · Physics 2009-11-13 John Southworth

With n-body simulations, we model terrestrial circumbinary planet (CBP) formation with an initial surface density profile motivated by hydrodynamic circumbinary gas disc simulations. The binary plays an important role in shaping the initial…

Earth and Planetary Astrophysics · Physics 2021-09-01 Anna C. Childs , Rebecca G. Martin

Compact binaries with orbital periods shorter than about 7 days show an absence of transiting planets, a feature known as the ``circumbinary planet desert". The physical mechanism behind this desert remains unclear. We investigate its…

Earth and Planetary Astrophysics · Physics 2026-05-06 Bin Liu , Dong Lai

The study of our Solar System -- its formation, evolution, and long-term stability -- has been ongoing for centuries and is now a standard part of scientific education. While the formation of other Solar-like exoplanetary systems is…

Astrophysics of Galaxies · Physics 2026-05-14 Václav Pavlík , Steven N. Shore , Vladimír Karas , Matyáš Fuksa

We analyze a tilt instability of the orbit of an outer planet in a two planet circumbinary system that we recently reported. The binary is on an eccentric orbit and the inner circumbinary planet is on a circular polar orbit that causes the…

Earth and Planetary Astrophysics · Physics 2024-04-17 Stephen H. Lubow , Anna C. Childs , Rebecca G. Martin

The frequency of planets in binaries is an important issue in the field of extrasolar planet studies, because of its relevance in estimating of the global planet population of our Galaxy and the clues it can give to our understanding of…

Astrophysics · Physics 2009-11-13 M. Bonavita , S. Desidera

Planetary systems formed in clusters may be subject to stellar encounter flybys. Here we create a diverse range of representative planetary systems with different orbital scales and planets' masses and examine encounters between them in a…

Earth and Planetary Astrophysics · Physics 2020-06-17 Daohai Li , Alexander J. Mustill , Melvyn B. Davies

The presence of highly eccentric extrasolar planets in binary stellar systems suggests that the Kozai effect has played an important role in shaping their dynamical architectures. However, the formation of planets in inclined binary systems…

Earth and Planetary Astrophysics · Physics 2015-05-28 Konstantin Batygin , Alessandro Morbidelli , Kleomenis Tsiganis

A survey of currently known planet-hosting stars indicates that approximately 25% of extrasolar planetary systems are within dual-star environments. Several of these systems contain stellar companions on moderately close orbits, implying…

Earth and Planetary Astrophysics · Physics 2009-08-25 Nader Haghighipour

Most stars form in star clusters and stellar associated. To understand the roles of star cluster environments in shaping the dynamical evolution of planetary systems, we carry out direct $N$-body simulations of four planetary systems models…

Earth and Planetary Astrophysics · Physics 2017-06-15 Maxwell Xu Cai , M. B. N. Kouwenhoven , Simon F. Portegies Zwart , Rainer Spurzem

The star formation process in molecular clouds usually leads to the formation of multiple stellar systems, mostly binaries. Remaining disks around those stars may be located around individual stars (circumstellar disks) or around the entire…

Astrophysics · Physics 2007-05-23 Wilhelm Kley , Andreas Burkert

The existence of planets born in environments highly perturbed by a stellar companion represents a major challenge to the paradigm of planet formation. In numerical simulations, the presence of a close binary companion stirs up the relative…

Earth and Planetary Astrophysics · Physics 2015-06-11 Stefano Meschiari

As of today over 40 planetary systems have been discovered in binary star systems. In all cases the configuration appears to be circumstellar, where the planets orbit around one of the stars, the secondary acting as a perturber. The…

Earth and Planetary Astrophysics · Physics 2015-05-14 Willy Kley
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