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With the increasing number of detected exoplanet samples, the statistical properties of planetary systems have become much clearer. In this review, we summarize the major statistics that have been revealed mainly by radial velocity and…

Earth and Planetary Astrophysics · Physics 2015-06-05 J. -L. Zhou , J. -W. Xie , H. -G. Liu , H. Zhang , Y. -S. Sun

A simple metric can be used to determine whether a planet or exoplanet can clear its orbital zone during a characteristic time scale, such as the lifetime of the host star on the main sequence. This criterion requires only estimates of star…

Earth and Planetary Astrophysics · Physics 2015-12-09 Jean-Luc Margot

Observations of bright protoplanetary disks often show annular gaps in their dust emission. One interpretation of these gaps is disk-planet interaction. If so, fitting models of planetary gaps to observed protoplanetary disk gaps can reveal…

Earth and Planetary Astrophysics · Physics 2020-09-09 Sayantan Auddy , Min-Kai Lin

Debris disks are created and sculpted by planetary bodies in the orbital space they share. The properties of these disks, including mass, orbital extent, and morphology, can be indicators of their planetary shepherds. Recently, T. Pearce…

Earth and Planetary Astrophysics · Physics 2026-04-09 Elisabeth M. Penderghast , Benjamin C. Bromley , Scott J. Kenyon , Joan R. Najita

The substructures observed in protoplanetary disks may be the signposts of embedded planets carving gaps or creating vortices. The inferred masses of these planets often fall in the Jovian regime despite their low abundance compared to…

Earth and Planetary Astrophysics · Physics 2022-06-22 Juan Garrido-Deutelmoser , Cristobal Petrovich , Leonardo Krapp , Kaitlin M. Kratter , Ruobing Dong

Current observations indicate that the planet formation process often produces multiple planet systems with nearly circular orbits, regular spacing, a narrow range of inclination angles, and similar planetary masses of order $m_{\rm…

Earth and Planetary Astrophysics · Physics 2019-07-10 Fred C. Adams

The study of planets beyond the solar system and the search for other habitable planets and life is just beginning. Ground-based (radial velocity and transits) and space-based surveys (transits and astrometry) will identify planets spanning…

Among the group of extrasolar planets, transiting planets provide a great opportunity to obtain direct measurements for the basic physical properties, such as mass and radius of these objects. These planets are therefore highly important in…

Instrumentation and Methods for Astrophysics · Physics 2009-06-19 András Pál

Two dimensional particle disks in proximity to a planet are numerically integrated to determine when a planet in a circular orbit can truncate a particle disk. Collisions are treated by giving each particle a series of velocity…

Astrophysics · Physics 2008-11-26 Alice C. Quillen

Over the past three decades, exoplanet research has delivered an extensive census of planets spanning a wide range of masses, sizes, and orbital configurations. Despite this progress, the physical interpretation of these populations remains…

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

A space-based gravitational microlensing exoplanet survey will provide a statistical census of exoplanets with masses down to 0.1 Earth-masses and orbital separations ranging from 0.5AU to infinity. This includes analogs to all the Solar…

The formation and evolution of protoplanetary systems, the breeding grounds of planet formation, is a complex dynamical problem that involves many orders of magnitudes. To serve this purpose, we present a new hybrid algorithm that combines…

Earth and Planetary Astrophysics · Physics 2011-06-01 Patrick Glaschke , Pau Amaro-Seoane , Rainer Spurzem

The gravitational influence of a planet on a nearby disk provides a powerful tool for detecting and studying extrasolar planetary systems. Here we demonstrate that gaps can be opened in dynamically cold debris disks at the mean-motion…

Earth and Planetary Astrophysics · Physics 2016-03-30 Maryam Tabeshian , Paul Wiegert

The gap between two component debris disks is often taken to be carved by intervening planets scattering away the remnant planetesimals. We employ N-body simulations to determine how the time needed to clear the gap depends on the location…

Earth and Planetary Astrophysics · Physics 2016-09-02 Andrew Shannon , Amy Bonsor , Quentin Kral , Elisabeth Matthews

The orbits of the confirmed exoplanets from all multiple systems known to date are investigated. Observational data from 1890 objects, of which 1176 are found in multiplanetary systems, are compiled and analyzed. Mean motion resonances and…

Earth and Planetary Astrophysics · Physics 2015-02-26 Marian C. Ghilea

The growing number of exoplanet discoveries and advances in machine learning techniques have opened new avenues for exploring and understanding the characteristics of worlds beyond our Solar System. In this study, we employ efficient…

Earth and Planetary Astrophysics · Physics 2023-08-29 Mahdiyar Mousavi-Sadr , Davood M. Jassur , Ghassem Gozaliasl

We examine the accretion of cores of giant planets from planetesimals, gas accretion onto the cores, and their orbital migration. We adopt a working model for nascent protostellar disks with a wide variety of surface density distributions…

Astrophysics · Physics 2009-11-10 S. Ida , D. N. C. Lin

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

Many exoplanets are discovered in binary star systems in internal or in circumbinary orbits. Whether the planet can be habitable or not depends on the possibility to maintain liquid water on its surface, and therefore on the luminosity of…

Earth and Planetary Astrophysics · Physics 2021-06-23 G. De Cesare , R. Capuzzo-Dolcetta
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