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A low mass for Mars from Jupiter’s early gas-driven migration
Simulation of the early Solar System shows how the inward migration of Jupiter to 1.5 au, and its subsequent outward migration, lead to a planetesimal disk truncated at 1’au; the terrestrial planets then form from this disk over the next 30–50 million years, with an Earth/Mars mass ratio consistent with observations.
THE COMPOSITIONAL DIVERSITY OF EXTRASOLAR TERRESTRIAL PLANETS. I. IN SITU SIMULATIONS
Extrasolar planet host stars have been found to be enriched in key planet-building elements. These enrichments have the potential to drastically alter the composition of material available for…
Building the terrestrial planets: Constrained accretion in the inner Solar System
Iron meteorites as remnants of planetesimals formed in the terrestrial planet region
It is shown that the iron-meteorite parent bodies most probably formed in the terrestrial planet region, and it is predicted that some asteroids are main-belt interlopers and a select few may even be remnants of the long-lost precursor material that formed the Earth.
Terrestrial planet formation with strong dynamical friction
Accretion and differentiation of the terrestrial planets with implications for the compositions of early-formed Solar System bodies and accretion of water
The Violent Collisional History of Asteroid 4 Vesta
Dawn observations confirm that Vesta is a small differentiated planetary body with an inner core, and represents a surviving proto-planet from the earliest epoch of solar system formation, and presents the mineralogical characterization of Vesta, revealing that this asteroid underwent a complex magmatic evolution that led to a differentiated crust and mantle.
The global effects of impact-induced seismic activity on fractured asteroid surface morphology
Highly siderophile elements in Earth’s mantle as a clock for the Moon-forming impact
- Seth Andrew Jacobson, A. Morbidelli, S. Raymond, D. O'Brien, K. Walsh, D. Rubie
- Geology, PhysicsNature
- 3 April 2014
A large number of N-body simulations are used to demonstrate a relationship between the time of the last giant impact on an Earth-like planet and the amount of mass subsequently added during the era known as Late Accretion, and the concentration of highly siderophile elements in Earth’s mantle constrains the mass of chondritic material added to Earth during LateAccretion.