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The asteroid belt was dynamically shaped during and after planet formation. Despite representing a broad ring of stable orbits, the belt contains less than one one-thousandth of an Earth mass. The asteroid orbits are dynamically excited…

Earth and Planetary Astrophysics · Physics 2022-07-20 Sean N. Raymond , David Nesvorny

With the growing numbers of asteroids being discovered, identifying an observationally complete sample is essential for statistical analyses and for informing theoretical models of the dynamical evolution of the solar system. We present an…

Earth and Planetary Astrophysics · Physics 2020-10-16 Nathanial P Hendler , Renu Malhotra

To date, hundreds of sub-stellar objects with masses between $1-80\ M_{\rm Jup}$ have been detected orbiting main-sequence stars. The current convention uses the deuterium-burning limit, $M_c \approx 13 M_{\rm Jup}$ to divide this…

Earth and Planetary Astrophysics · Physics 2025-11-18 Gregory J. Gilbert , Judah Van Zandt , Erik A. Petigura , Steven Giacalone , Andrew W. Howard , Luke B. Handley

We study the evolution of circumstellar massive disks around the primary star of a binary system focusing on the computation of disk eccentricity. In particular, we concentrate on its dependence on the binary eccentricity. Self-gravity is…

Earth and Planetary Astrophysics · Physics 2015-05-13 F. Marzari , H. Scholl , P. Thebault , C. Baruteau

Recent analyses have shown that distant orbits within the scattered disk population of the Kuiper belt exhibit an unexpected clustering in their respective arguments of perihelion. While several hypotheses have been put forward to explain…

Earth and Planetary Astrophysics · Physics 2016-01-22 Konstantin Batygin , Michael E. Brown

One of the most remarkable properties of extrasolar planets is their high orbital eccentricities. Observations have shown that at least 20% of these planets, including some with particularly high eccentricities, are orbiting a component of…

Astrophysics · Physics 2009-11-10 G. Takeda , F. A. Rasio

Observations of exoplanets have revealed that systems with planets on closely-spaced orbits are common, which motivates the question "How closely can planets orbit to one another and still be dynamically-stable for very long times?". To…

Earth and Planetary Astrophysics · Physics 2020-07-28 Pierre Gratia , Jack J. Lissauer

Recent observations have revealed the distribution of orbital period ratios of adjacent planets in multiple super-Earth systems and how these distributions change with time. The aim of this study is to clarify under what conditions the…

Earth and Planetary Astrophysics · Physics 2025-11-17 Masahiro Ogihara , Masanobu Kunitomo

We have evaluated the rate at which the asteroid belt is losing material, and how it splits between macroscopic bodies and meteoritic dust. The mass loss process is due to the injection of asteroid fragments into unstable dynamical regions,…

Earth and Planetary Astrophysics · Physics 2025-09-26 Julio A. Fernandez

The orbital eccentricity-radius relation for small planets is indicative of the predominant dynamical sculpting processes during late-stage orbital evolution. Previous studies have shown that planets orbiting Sun-like stars exhibit an…

Earth and Planetary Astrophysics · Physics 2025-07-11 Sheila Sagear , Sarah Ballard , Gregory J. Gilbert , Mariangel Albornoz , Christopher Lam

Observed planetary debris in white dwarf atmospheres predominately originate from the destruction of small bodies on highly eccentric ($>0.99$) orbits. Despite their importance, these minor planets have coupled physical and orbital…

Solar and Stellar Astrophysics · Physics 2020-01-08 Valeri V. Makarov , Dimitri Veras

Models for the steady state collisional evolution of low eccentricity planetesimal belts identify debris disks with hot dust at 1AU, like eta Corvi and HD69830, as anomalous since collisional processing should have removed most of the…

Earth and Planetary Astrophysics · Physics 2015-05-14 M. C. Wyatt , M. Booth , M. J. Payne , L. J. Churcher

Interplanetary dust in the inner solar system originates from multiple sources, including short-period comets and main-belt asteroids. In this work, we focus specifically on the dynamical evolution of asteroid-derived dust using N-body…

Earth and Planetary Astrophysics · Physics 2026-05-13 Aanchal Sahu , Jayesh Pabari

Observations of massive stars within the central parsec of the Galaxy show that, while most stars orbit within a well-defined disc, a significant fraction have large eccentricities and / or inclinations with respect to the disc plane. Here,…

Astrophysics · Physics 2009-03-08 Jorge Cuadra , Philip J. Armitage , Richard D. Alexander

Previous works focused on exoplanets discovered with the radial velocity (RV) method reported an anti-correlation between the orbital eccentricities of the exoplanets and the multiplicity M (i.e., number of planets) of their system. We…

Earth and Planetary Astrophysics · Physics 2017-09-13 Angelo Zinzi , Diego Turrini

The large eccentricities of cold Jupiters and the existence of hot Jupiters have long challenged theories of planet formation. A proposed solution to both of these puzzles is high-eccentricity migration, in which an initially cold Jupiter…

Earth and Planetary Astrophysics · Physics 2025-02-14 Grant C. Weldon , Smadar Naoz , Bradley M. S. Hansen

We study the evolution of eccentricity and inclination of massive planets in low-density cavities of protoplanetary discs using three-dimensional (3D) simulations. When the planet's orbit is aligned with the equatorial plane of the disc,…

Earth and Planetary Astrophysics · Physics 2024-06-28 M. M. Romanova , A. V. Koldoba , G. V. Ustyugova , C. Espaillat , R. V. E. Lovelace

V-type asteroids, characterized by two absorption bands at 1.0 and 2.0 $\mu m$, are usually thought to be portions of the crust of differentiated or partially differentiated bodies. Most V-type asteroids are found in the inner main belt and…

Earth and Planetary Astrophysics · Physics 2015-06-22 Mariela E. Huaman , Valerio Carruba , Rita Cassia Domingos

The distribution of eccentricities e of extra-solar planets with semi-major axes a > 0.2 AU is very uniform, and values for e are relatively large, averaging 0.3 and broadly distributed up to near 1. For a < 0.2 AU, eccentricities are much…

Astrophysics · Physics 2008-01-07 Brian Jackson , Richard Greenberg , Rory Barnes

In this study, we compute completeness-corrected occurrence rates of giant exoplanets as a function of mass, semimajor axis, and eccentricity, using the approximately uniform California Legacy Survey sample of RV-discovered planets…

Earth and Planetary Astrophysics · Physics 2026-01-28 Sarah Blunt , Jason Wang , Ruth Murray-Clay , Bruce Macintosh , Ryan A. Rubenzahl , B. J. Fulton