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The late-stage formation of giant planetary systems is rich in interesting dynamical mechanisms. Previous simulations of three giant planets initially on quasi-circular and quasi-coplanar orbits in the gas disc have shown that highly…

Earth and Planetary Astrophysics · Physics 2018-05-02 Anne-Sophie Libert , Sotiris Sotiriadis , Kyriaki I. Antoniadou

Post-asymptotic giant branch (post-AGB) binary stars are evolved systems that host circumbinary discs formed through mass loss during late stage binary interactions. Their structural, morphological, kinematic, and chemical similarities to…

Earth and Planetary Astrophysics · Physics 2025-11-13 Ali Pourmand , Devika Kamath , Orsola De Marco , Mark Wardle

Direct imaging observations of planets revealed that wide-orbit ($>10$ au) giant planets exist even around subsolar-metallicity host stars and do not require metal-rich environments for their formation. A possible formation mechanism of…

Earth and Planetary Astrophysics · Physics 2023-07-27 Ryoki Matsukoba , Eduard I. Vorobyov , Takashi Hosokawa , Manuel Guedel

Giant planets have been discovered at large separations from the central star. Moreover, a striking number of young circumstellar disks have gas and/or dust gaps at large orbital separations, potentially driven by embedded planetary…

Earth and Planetary Astrophysics · Physics 2022-07-08 Hans Baehr , Zhaohuan Zhu , Chao-Chin Yang

The large scale structure of the Solar System has been shaped by a transient dynamical instability that may have been triggered by the interaction of the giants planets with a massive primordial disk of icy debris. In this work, we…

Earth and Planetary Astrophysics · Physics 2021-08-18 Marvin Morgan , Darryl Seligman , Konstantin Batygin

The ubiquity of planets and diversity of planetary systems reveal planet formation encompass many complex and competing processes. In this series of papers, we develop and upgrade a population synthesis model as a tool to identify the…

Earth and Planetary Astrophysics · Physics 2015-06-16 S. Ida , D. N. C. Lin , M. Nagasawa

The observed wide eccentricity distribution of extrasolar giant planets is thought to be the result of dynamical instabilities and gravitational scattering among planets. Previously, it has been assumed that the orbits in giant planet…

Earth and Planetary Astrophysics · Physics 2015-06-15 Elena Lega , Alessandro Morbidelli , David Nesvorný

We explore the initial conditions for fragments in the extended regions ($r\gtrsim 50$ AU) of gravitationally unstable disks. We combine analytic estimates for the fragmentation of spiral arms with 3D SPH simulations to show that initial…

Earth and Planetary Astrophysics · Physics 2015-05-14 Aaron C. Boley , Tristen Hayfield , Lucio Mayer , Richard H. Durisen

Transition disks have dust-depleted inner regions and may represent an intermediate step of an on-going disk dispersal process, where planet formation is probably in progress. Recent millimetre observations of transition disks reveal…

Earth and Planetary Astrophysics · Physics 2014-11-19 P. Pinilla , M. de Juan Ovelar , S. Ataiee , M. Benisty , T. Birnstiel , E. F. van Dishoeck , M. Min

Over 50 circumbinary exoplanets have been discovered in recent years, with several of them being gas giants on wide orbits ($>10$AU). The aim of this work is to investigate whether these planets can form through circumbinary disc…

Solar and Stellar Astrophysics · Physics 2026-04-28 Matthew Teasdale , Dimitris Stamatellos

We present a suite of three dimensional radiative gravitational hydrodynamics models suggesting that binary stars may be quite capable of forming planetary systems similar to our own. The new models with binary companions do not employ any…

Astrophysics · Physics 2009-12-08 A. P. Boss

Evidence of mutually inclined planetary orbits has been reported for giant planets these last years. Here we aim to study the impact of eccentric and inclined massive giant planets on the terrestrial planet formation process, and…

Earth and Planetary Astrophysics · Physics 2018-06-06 Sotiris Sotiriadis , Anne-Sophie Libert , Sean N. Raymond

Increasingly better observations of resolved protoplanetary disks show a wide range of conditions in which planets can be formed. Many transitional disks show gaps in their radial density structure, which are usually interpreted as…

Earth and Planetary Astrophysics · Physics 2020-01-22 Germán Chaparro Molano , Frank Bautista , Yamila Miguel

We aim to investigate the influence of the eccentricity and inclination damping due to planet-disc interactions on the final configurations of the systems, generalizing previous studies on the combined action of the gas disc and…

Earth and Planetary Astrophysics · Physics 2016-12-09 Sotiris Sotiriadis , Anne-Sophie Libert , Bertram Bitsch , Aurélien Crida

We review the models and results of simulations of self-gravitating, gaseous protoplanetary disks in binary star systems. These models have been calculated by three different groups with three different computational methods, two…

Astrophysics · Physics 2007-05-23 Lucio Mayer , Alan Boss , Andrew F. Nelson

We study the effect of a massive planetesimal disk on the dynamical stability of the outer planets assuming, as has been suggested recently, that these were initially locked in a compact and multiresonant configuration as a result of…

Earth and Planetary Astrophysics · Physics 2015-05-20 Mauricio Reyes-Ruiz , Hector Aceves , Carlos E. Chavez

Observations in the past decade have revealed extrasolar planets with a wide range of orbital semimajor axes and eccentricities. Based on the present understanding of planet formation via core accretion and oligarchic growth, we expect that…

Astrophysics · Physics 2008-12-18 Sourav Chatterjee , Eric B. Ford , Soko Matsumura , Frederic A. Rasio

The Solar System's orbital structure is thought to have been sculpted by an episode of dynamical instability among the giant planets. However, the instability trigger and timing have not been clearly established. Hydrodynamical modeling has…

Earth and Planetary Astrophysics · Physics 2022-05-11 Beibei Liu , Sean N. Raymond , Seth A. Jacobson

Following the assumption that the disc substructures observed in protoplanetary discs originate from the interaction between the disc and the forming planets embedded therein, we aim to test if these putative planets could represent the…

Earth and Planetary Astrophysics · Physics 2023-09-13 Anastasia Tzouvanou , Bertram Bitsch , Gabriele Pichierri

Context.Transition disks are believed to be the final stages of protoplanetary disks, during which a forming planetary system or photoevaporation processes open a gap in the inner disk, drastically changing the disk structure. From…

Earth and Planetary Astrophysics · Physics 2012-09-17 P. Pinilla , M. Benisty , T. Birnstiel