6 papers
The Dynamics of Planetary Ejection
Malena Rice, William DeRocco, Sean N. Raymond
The ubiquity of free-floating planets inferred from microlensing and direct imaging surveys suggests that planetary ejection---a process in which planets initially born encircling…
Was the Solar System's dynamical instability triggered by a (sub)stellar flyby?
Sean N. Raymond, Nathan A. Kaib
An instability among the giant planets' orbits can match many aspects of the Solar System's current orbital architecture. We explore the possibility that this dynamical instability…
Asteroids fail to retain cometary impact signatures
Sarah Joiret, Guillaume Avice, Ludovic Ferrière +4
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 se…
Dynamical origin of Theia, the last giant impactor on Earth
Duarte Branco, Sean N. Raymond, Pedro Machado
Cosmochemical studies have proposed that Earth accreted roughly 5-10% of its mass from carbonaceous (CC) material, with a large fraction delivered late via its final impactor, Thei…
Clues for Solar System Formation from Meteorites and their Parent Bodies
Bernard Marty, Katherine R. Bermingham, Larry R. Nittler +1
Understanding the origin of comets requires knowledge of how the Solar System formed from a cloud of dust and gas 4.567 Gyr ago. Here, a review is presented of how the remnants of…
The Influence of Passing Field Stars on the Solar System's Dynamical Future
Nathan A. Kaib, Sean N. Raymond
The long-term dynamical future of the Sun's planets has been simulated and statistically analyzed in great detail, but most prior work considers the solar system as completely isol…