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19 papers · 2 filters
Late Accretion and the Late Veneer
Alessandro Morbidelli, Bernard Wood
The concept of Late Veneer has been introduced by the geochemical community to explain the abundance of highly siderophile elements in the Earth's mantle and their chondritic propo…
Accretion and differentiation of the terrestrial planets with implications for the compositions of early-formed Solar System bodies and accretion of water
David C. Rubie, Seth A. Jacobson, Alessandro Morbidelli +5
In order to test planetary accretion and differentiation scenarios, we integrated a multistage core-mantle differentiation model with N-body accretion simulations. Impacts between…
Small asteroid system evolution
Seth A. Jacobson
Observations with radar, photometric and direct imaging techniques have discovered that multiple asteroid systems can be divided clearly into a handful of different morphologies, a…
Numerical Simulations of Collisional Disruption of Rotating Gravitational Aggregates: Dependence on Material Properties
Ronald-Louis Ballouz, Derek C Richardson, Patrick Michel +2
Our knowledge of the strengths of small bodies in the Solar System is limited by our poor understanding of their internal structures, and this, in turn, clouds our understanding of…
Post-main-sequence debris from rotation-induced YORP break-up of small bodies
Dimitri Veras, Seth A. Jacobson, Boris T. Gaensicke
Although discs of dust and gas have been observed orbiting white dwarfs, the origin of this circumstellar matter is uncertain. We hypothesize that the in-situ breakup of small bodi…
Low-speed Impact Simulations into Regolith in Support of Asteroid Sampling Mechanism Design I.: Comparison with 1-g Experiments
Stephen R. Schwartz, Patrick Michel, Derek C. Richardson +1
This study is carried out in the framework of sample-return missions to asteroids that use a low-speed projectile as the primary component of its sampling mechanism (e.g., JAXA's H…