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Detectable debris discs are thought to require dynamical excitation (`stirring'), so that planetesimal collisions release large quantities of dust. We investigate the effects of the secular perturbations of a planet, which may lie at a…

Earth and Planetary Astrophysics · Physics 2015-05-13 Alexander Mustill , Mark Wyatt

Classical secular theory can be a powerful tool to describe the qualitative character of multi-planet systems and offer insight into their histories. The eigenmodes of the secular behavior, rather than current orbital elements, can help…

Earth and Planetary Astrophysics · Physics 2014-01-29 Christa Van Laerhoven , Richard Greenberg

Hilda asteroids, which orbit in a 3:2 resonance with Jupiter, serve as key indicators of dynamical processes in the early solar system. Their spin rates, an important probe of these mechanisms, can constrain their density and collisional…

Multi-planet systems face significant challenges to detection. For example, further orbiting planets have reduced signal-to-noise ratio in radial velocity detection methods, and small mutual inclinations between planets can prevent them…

Earth and Planetary Astrophysics · Physics 2024-10-22 Thea Faridani , Smadar Naoz , Gongjie Li , Malena Rice , Nicholas Inzunza

A bombardment of comets is thought to have occurred in the inner solar system as a result of a dynamical instability among the giant planets after gas disk dispersal. Vesta, the second largest asteroid in the main asteroid belt, likely…

Earth and Planetary Astrophysics · Physics 2025-11-18 Sarah Joiret , Guillaume Avice , Ludovic Ferrière , Zoë M. Leinhardt , Simon Lock , Alexandre Mechineau , Sean N. Raymond

Large observational surveys, like those that will be conducted at the Vera C. Rubin Observatory, are expected to discover up to one million new asteroids in the first year of operation. This will more than double the database of known…

Earth and Planetary Astrophysics · Physics 2022-06-29 Valerio Carruba , Safwan Aljbaae , Rita de Cassia Domingos , Mariela Huaman , Bruno Martins

In this paper we apply different methods to examine the possibility that a small group of 24 asteroids dynamically linked to main-belt comet P/2006 VW139, recently discovered by the Pan-STARRS1 survey telescope, shares a common physical…

Earth and Planetary Astrophysics · Physics 2012-07-17 Bojan Novakovic , Henry H. Hsieh , Alberto Cellino

Globular clusters contain a finite number of stars. As a result, they inevitably undergo secular evolution (`relaxation') causing their mean distribution function (DF) to evolve on long timescales. On one hand, this long-term evolution may…

Astrophysics of Galaxies · Physics 2021-09-29 Jean-Baptiste Fouvry , Chris Hamilton , Simon Rozier , Christophe Pichon

Asteroid surveys are the backbone of asteroid science, and with this in mind we begin with a broad review of the impact of asteroid surveys on our field. We then provide a brief history of asteroid discoveries so as to place contemporary…

Earth and Planetary Astrophysics · Physics 2016-08-31 Robert Jedicke , Mikael Granvik , Marco Micheli , Eileen Ryan , Timothy Spahr , Donald K. Yeomans

We investigate the orbital evolution of a system of N mutually interacting stars on initially circular orbits around the dominating central mass. We include perturbative influence of a distant axisymmetric source and an extended spherical…

Astrophysics of Galaxies · Physics 2015-05-28 Jaroslav Haas , Ladislav Subr , David Vokrouhlicky

We have numerically investigated the long term dynamical behavior of known Centaurs. This class of objects is thought to constitute the transitional population between the Kuiper Belt and the Jupiter-family comets (JFCs). In our study, we…

Astrophysics · Physics 2008-02-14 Matthew S. Tiscareno , Renu Malhotra

With the discovery over the last two decades of a large diversity of exoplanetary systems, it is now of prime importance to characterize star-planet interactions and how such systems evolve. We address this question by studying systems…

Solar and Stellar Astrophysics · Physics 2019-01-16 M. Benbakoura , V. Réville , A. S. Brun , C. Le Poncin-Lafitte , S. Mathis

Asteroid collisions are one of the main processes responsible for the evolution of bodies in the main belt. Using observations of the Dimorphos impact by the DART spacecraft, we estimate how asteroid collisions in the main belt may look in…

Earth and Planetary Astrophysics · Physics 2024-03-07 E. O. Ofek , D. Polishook , D. Kushnir , G. Nir , S. Ben-Ami , Y. Shvartzvald , N. L. Strotjohann , E. Segre , A. Blumenzweig , M. Engel , D. Bodewits , J. W. Noonan

We present an analytical formalism to study the secular dynamics of a system consisting of N-2 planets orbiting a binary star in outer orbits. We introduce a canonical coordinate system and expand the disturbing function in terms of…

Earth and Planetary Astrophysics · Physics 2017-11-08 Eduardo Andrade-Ines , Philippe Robutel

Galaxy interactions leave imprints in the motions of their stars, and so observing the two-dimensional stellar kinematics allows us to uncover their formation process. Slow rotators, which have stellar orbits dominated by random motions,…

Astrophysics of Galaxies · Physics 2019-11-15 Mark T. Graham , Michele Cappellari , Matthew A. Bershady , Niv Drory

Extrasolar debris disks are detected by observing dust, which is thought to be released during planetesimal collisions. This implies that planetesimals are dynamically excited ("stirred"), such that collisions are sufficiently common and…

Earth and Planetary Astrophysics · Physics 2023-11-20 Tyson Costa , Tim D. Pearce , Alexander V. Krivov

The asteroid belt is characterized by an extreme low total mass of material on dynamically excited orbits. The Nice Model explains many peculiar qualities of the solar system, including the belt's excited state, by invoking an orbital…

Earth and Planetary Astrophysics · Physics 2020-01-15 Matthew S. Clement , Alessandro Morbidelli , Sean N. Raymond , Nathan A. Kaib

We study the chaotic orbital evolution of planetary systems, focusing on secular (i.e., orbit-averaged) interactions, because these often dominate on long timescales. We first focus on the evolution of a test particle that is forced by…

Earth and Planetary Astrophysics · Physics 2015-05-20 Yoram Lithwick , Yanqin Wu

The observationally complete sample of the main belt asteroids now spans more than two orders of magnitude in size and numbers more than 64,000 (excluding collisional family members). We undertook an analysis of asteroids' eccentricities…

Earth and Planetary Astrophysics · Physics 2017-01-11 Renu Malhotra , Xianyu Wang

This chapter reviews the dynamical processes in young stellar clusters. The accretion of gas by individual stars affects the dynamics of the cluster, and the masses of the stars. Dynamical mass segregation cannot explain the degree of mass…

Astrophysics · Physics 2007-05-23 Ian Bonnell , Pavel Kroupa
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