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Disc winds and planet-disc interactions are two crucial mechanisms that define the structure, evolution and dispersal of protoplanetary discs. While winds are capable of removing material from discs, eventually leading to their dispersal,…

Earth and Planetary Astrophysics · Physics 2024-05-29 Michael L. Weber , Giovanni Picogna , Barbara Ercolano

The discovery of multi-planet extrasolar systems has kindled interest in using their orbital evolution as a probe of planet formation. Accurate descriptions of planetary orbits identify systems which could hide additional planets or be in a…

Earth and Planetary Astrophysics · Physics 2015-05-18 Dimitri Veras , Eric B. Ford

More than half of all stars are part of binaries, and many form in a common circumbinary disc. The interaction with the binary shapes the disc to feature a large eccentric inner cavity and spirals in the inner disc. The shape of the…

Earth and Planetary Astrophysics · Physics 2025-01-29 Anna B. T. Penzlin , Richard A. Booth , Richard P. Nelson , Christoph M. Schäfer , Wilhelm Kley

The arrival of powerful instruments will provide valuable data for the characterization of rocky exoplanets. It is then crucial to accurately model the dynamical state of exoplanets. Rocky planets with sufficiently large orbits should have…

With hydrodynamical simulations we determine the conditions under which an initially coplanar planet-disc system that orbits a member of a misaligned binary star evolves to form a planet that undergoes Kozai-Lidov (KL) oscillations once the…

Earth and Planetary Astrophysics · Physics 2016-03-23 Rebecca G. Martin , Stephen H. Lubow , Chris Nixon , Philip J. Armitage

Planet-planet scattering best explains the eccentricity distribution of extrasolar giant planets. Past literature showed that the orbits of planets evolve due to planet-planet scattering. This work studies the spin evolution of planets in…

Earth and Planetary Astrophysics · Physics 2021-11-03 Yu-Cian Hong , Dong Lai , Jonathan I. Lunine , Philip D. Nicholson

The discovery of many giant planets in close-in orbits and the effect of planetary and stellar tides in their subsequent orbital decay have been extensively studied in the context of planetary formation and evolution theories. Planets…

Earth and Planetary Astrophysics · Physics 2019-11-28 Jaime A. Alvarado-Montes , Carolina García-Carmona

We extend the results of planetary formation synthesis by computing the long-term evolution of synthetic systems from the clearing of the gas disk into the dynamical evolution phase. We use the symplectic integrator SyMBA to numerically…

Earth and Planetary Astrophysics · Physics 2015-06-24 S. Pfyffer , Y. Alibert , W. Benz , D. Swoboda

We study the evolution of the protoplanetary discs (PPDs) in the presence of magnetically driven winds with the stress relations motivated by the non-ideal MHD disc simulations. Contribution of the magnetic winds in the angular momentum…

Astrophysics of Galaxies · Physics 2019-07-31 Mohsen Shadmehri , Sayyedeh Masoumeh Ghoreyshi

We study the interaction between massive planets and a gas disc with a mass in the range expected for protoplanetary discs. We use SPH simulations to study the orbital evolution of a massive planet as well as the dynamical response of the…

Earth and Planetary Astrophysics · Physics 2013-03-11 Meng Xiang-Gruess , John C. B. Papaloizou

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

In this paper we develop a framework for studying unstratified, magnetised eccentric discs and compute uniformly precessing eccentric modes in a cylindrical annulus which provide convenient initial conditions for numerical simulations. The…

High Energy Astrophysical Phenomena · Physics 2023-09-18 Elliot M. Lynch , Janosz W. Dewberry

We examine the eccentricity evolution of a system of two planets locked in a mean motion resonance, in which the outer planet loses energy and angular momentum. The sink of energy and angular momentum could be either a gas or planetesimal…

Astrophysics · Physics 2009-11-06 N. Murray , M. Paskowitz , M. Holman

The current picture of terrestrial planet formation relies heavily on our understanding of the dynamical evolution of planetesimals -- asteroid-like bodies thought to be planetary building blocks. In this study we investigate the growth of…

Astrophysics · Physics 2009-11-07 Roman R. Rafikov

Massive giant planets, such as the ones being discovered by direct imaging surveys, likely experience the majority of their growth through a circumplanetary disc. We argue that the entropy of accreted material is determined by boundary…

Earth and Planetary Astrophysics · Physics 2016-03-16 James E. Owen , Kristen Menou

We use N-body simulations to explore the influence of orbital eccentricity on the dynamical evolution of star clusters. Specifically we compare the mass loss rate, velocity dispersion, relaxation time, and the mass function of star clusters…

Astrophysics of Galaxies · Physics 2015-06-19 Jeremy J. Webb , Nathan Leigh , Alison Sills , William E. Harris , Jarrod R. Hurley

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

Recent discoveries of several transiting planets with clearly non-zero eccentricities and some large inclinations started changing the simple picture of close-in planets having circular and well-aligned orbits. Two major scenarios to form…

Earth and Planetary Astrophysics · Physics 2015-05-19 Soko Matsumura , Stanton J. Peale , Frederic A. Rasio

We investigate the response of an accretion disk to the presence of a perturbing protoplanet embedded in the disk through time dependent hydrodynamical simulations. The disk is treated as a two-dimensional viscous fluid and the planet is…

Astrophysics · Physics 2009-11-11 Wilhelm Kley , Gerben Dirksen

In order to explain the main characteristics of the observed population of extrasolar planets and the giant planets in the Solar System, we need to get a clear understanding of which are the initial conditions that allowed their formation.…

Earth and Planetary Astrophysics · Physics 2015-05-20 Yamila Miguel , Octavio M. Guilera , Adrián Brunini