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PLANETESIMALS TO PROTOPLANETS. I. EFFECT OF FRAGMENTATION ON TERRESTRIAL PLANET FORMATION
n-body simulations planetary systems solar system
2015/12/25
We present results from a dozen direct N-body simulations of terrestrial planet formation with various initial conditions. In order to increase the realism of our simulations and investigate theeffect...
Gravitational instability and clustering in a disk of planetesimals
stars planetary systems protoplanetary disks – gravitation – planets satellites formation
2015/12/25
For a long time, gravitational instability in the disk of planetesimals has been suspected to be the main engine responsible for the beginning of dust growth, its advantage being that it provides forr...
Catastrophic disruption of asteroids and family formation:a review of numerical simulations including both fragmentation and gravitational reaccumulations
Asteroids composition Asteroids dynamics Collisional physics Impact processes
2015/12/25
In the last few years, thanks to the development of sophisticated numerical codes, a major breakthrough has been achieved in our understanding of the processes involved in small bodycollisions. In thi...
Catastrophic disruption of pre-shattered parent bodies
Asteroids composition Asteroids dynamics Collisional physics Impact processes
2015/12/25
In this paper, we analyze the effect of the internal structure of a parent body on its fragment properties following its disruption in different impact energy regimes. To simulate an asteroid breakup,...
Numerical experiments with rubble piles:equilibrium shapes and spins
Asteroids Planetesimals Rotational dynamics Solid body tides Satellites of Jupiter
2015/12/25
We present numerical experiments investigating the shape and spin limits of self-gravitating “perfect” rubble piles that consist of identical, smooth, rigid, spherical particles with configurable norm...
The formation of asteroid satellites in large impacts:results from numerical simulations
Asteroids Collisional physics Impact processes Satellites general
2015/12/25
We present results of 161 numerical simulations of impacts into 100-km diameter asteroids, examining debris trajectories to search for the formation of bound satellite systems. Our simulations utilize...
Numerical simulations of granular dynamics II:Particle dynamics in a shaken granular material
Asteroids, Surfaces Collisional physics Geological processes Regoliths Experimental techniques
2015/12/25
Surfaces of planets and small bodies of our Solar System are often covered by a layer of granular material that can range from a fine regolith to a gravel-like structure of varying depths. Therefore, ...
Planetesimal clusters in a Keplerian disk I. gravitational evolution
planetary systems formation protoplanetary disks gravitation
2015/12/25
It was recently demonstrated by numerical simulations that a turbulent flow in a rotating system is capable of efficiently concentrating passively advected particles – having a density larger thanthe ...
N-Body Simulations of Planetesimal Evolution:Effect of Varying Impactor Mass Ratio
planetesimals asteroids planetary formation collisional physics
2015/12/25
We present results from direct N-body simulations of collisions between gravitational aggregates of varying size as part of a study to parameterize planetesimal growth in the Solar System. We find tha...
Collisions and Gravitational Reaccumulation:Forming Asteroid Families and Satellites
Collisions and Gravitational Asteroid Families Satellites
2015/12/25
Numerical simulations of the collisional disruption of large asteroids show that although the parent body is totally shattered, subsequent gravitational reaccumulation leads to the formation of an ent...
Direct N-body Simulations of Rubble Pile Collisions
asteroids collisional physics impact processes planetary formation planetesimals
2015/12/25
There is increasing evidence that many kilometer-sized bodies in the Solar System are piles of rubble bound together by gravity. We present results from a project to map the parameter space of collisi...
Formation of Asteroid Families by Catastrophic Disruption:Simulations with Fragmentation and Gravitational Reaccumulation
asteroids dynamics planetesimals resonances surfaces asteroids
2015/12/25
This paper builds on preliminary work in which numerical simulations of the collisional disruption of large asteroids (represented by the Eunomia and Koronis family parent bodies) were performed and w...
Direct Large-Scale N-Body Simulations of Planetesimal Dynamics
N-body simulation planetesimals planetary formation planetary dynamics resonances
2015/12/25
We describe a new direct numerical method for simulating planetesimal dynamics in which N ~ 106 or more bodies can be evolved simultaneously in three spatial dimensions over hundreds ofdynamical times...
1620 GEOGRAPHOS AND 433 EROS:SHAPED BY PLANETARY TIDES?
celestial mechanics stellar dynamics E minor planets asteroids
2015/12/25
Until recently, most asteroids were thought to be solid bodies whose shapes were determined largely by collisions with other asteroids. Recent work by Burns and others has shown that many asteroids ma...