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The discovery of transiting circumbinary planets by the Kepler mission suggests that planets can form efficiently around binary stars. None of the stellar binaries currently known to host planets has a period shorter than 7 days, despite…

Earth and Planetary Astrophysics · Physics 2015-09-16 Diego J. Muñoz , Dong Lai

We examine the formation of planets around binary stars in light of the recently discovered systems Kepler 16, 34 and 35. We conduct hydrodynamical simulations of self gravitating disks around binary systems. The selected binary and disk…

Earth and Planetary Astrophysics · Physics 2015-06-11 F. I. Pelupessy , S. Portegies Zwart

Binary stars are ubiquitous; the majority of solar-type stars exist in binaries. Exoplanet occurrence rate is suppressed in binaries, but some multiples do still host planets. Binaries cause observational biases in planet parameters, with…

The majority of binary stars do not eclipse. Current searches for transiting circumbinary planets concentrate on eclipsing binaries, and are therefore restricted to a small fraction of potential hosts. We investigate the concept of finding…

Earth and Planetary Astrophysics · Physics 2014-10-29 David V. Martin , Amaury H. M. J. Triaud

Small planets ($R_{p} \leq 4 R_{\oplus}$) are divided into rocky super-Earths and gaseous sub-Neptunes separated by a radius gap, but the mechanisms that produce these distinct planet populations remain unclear. Binary stars are the only…

The discovery of Exoplanetary Systems has challenged some of the theories of planet formation, which assume unperturbed evolution of the host star and its planets. However, in star clusters the interactions with flyby stars and binaries may…

Earth and Planetary Astrophysics · Physics 2020-06-17 Yi-Han Wang , Rosalba Perna , Nathan W. C. Leigh

Planet Planet scattering is a leading dynamical mechanism invoked to explain the present orbital distribution of exoplanets. Many stars belong to binary systems, therefore it is important to understand how this mechanism works in presence…

Earth and Planetary Astrophysics · Physics 2021-12-22 Francesco Marzari , Makiko Nagasawa , Krzyszof Goździewski

Most stars form in a clustered environment. Both single and binary stars will sometimes encounter planetary systems in such crowded environments. Encounter rates for binaries may be larger than for single stars, even for binary fractions as…

Earth and Planetary Astrophysics · Physics 2020-09-30 Daohai Li , Alexander J. Mustill , Melvyn B. Davies

Recent studies reveal that the free eccentricities of Kepler-34b and Kepler-413b are much larger than their forced eccentricities, implying that the scattering events may take place in their formation. The observed orbital configuration of…

Earth and Planetary Astrophysics · Physics 2017-10-17 Yan-Xiang Gong , Jianghui Ji

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

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

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

Many planets are observed in stellar binary systems, and their frequency may be comparable to that of planetary systems around single stars. Binary stellar evolution in such systems influences the dynamical evolution of the resident…

Earth and Planetary Astrophysics · Physics 2015-06-04 Kaitlin M. Kratter , Hagai B. perets

The present dynamical configuration of planets in binary star systems may not reflect their formation process since the binary orbit may have changed in the past after the planet formation process was completed. An observed binary system…

Astrophysics · Physics 2009-11-13 F. Marzari , M. Barbieri

The recent discovery of planets orbiting main sequence binaries will provide crucial constraints for theories of binary and planet formation. The formation pathway for these planets is complicated by uncertainties in the formation mechanism…

Earth and Planetary Astrophysics · Physics 2015-06-17 Kaitlin M. Kratter , Andrew Shannon

The statistical properties of planets in binaries were investigated. Any difference to planets orbiting single stars can shed light on the formation and evolution of planetary systems. As planets were found around components of binaries…

Astrophysics · Physics 2009-11-11 S. Desidera , M. Barbieri

Exoplanetary systems are found not only among single stars, but also binaries of widely varying parameters. Binaries with separations of 100--1000 au are prevalent in the Solar neighborhood; at these separations planet formation around a…

Earth and Planetary Astrophysics · Physics 2015-06-04 Nickolas Moeckel , Dimitri Veras

Planets in binary-star systems exhibit demographic differences compared to planets in single-star systems. In particular, planets with binary-star hosts have a lower overall occurrence rate compared to their single-star counterparts, as…

Earth and Planetary Astrophysics · Physics 2026-03-24 Kendall Sullivan , Gregory J. Gilbert

Free-floating planets are a new class of planets recently discovered. These planets don't orbit within stellar systems, instead living a nomadic life within the galaxy. How such objects formed remains elusive. Numerous works have explored…

Earth and Planetary Astrophysics · Physics 2024-03-28 Gavin A. L. Coleman

Planet formation is often considered in the context of one circumstellar disk around one star. Yet stellar binary systems are ubiquitous, and thus a substantial fraction of all potential planets must form and evolve in more complex,…

Earth and Planetary Astrophysics · Physics 2022-02-16 Trent J. Dupuy , Adam L. Kraus , Kaitlin M. Kratter , Aaron C. Rizzuto , Andrew W. Mann , Daniel Huber , Michael J. Ireland
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