437 citations · 4k across the 52 of their papers we have counts for
53 papers
The Dynamical State of the Didymos System Before and After the DART Impact
Derek C. Richardson, Harrison F. Agrusa, Brent Barbee +50
NASA's Double Asteroid Redirection Test (DART) spacecraft impacted Dimorphos, the natural satellite of (65803) Didymos, on 2022 September 26, as a first successful test of kinetic…
An improved model of metal/silicate differentiation during Earth's accretion
K. I. Dale, D. C. Rubie, M. Nakajima +5
We improved the algorithm presented in Rubie et al. (2015) to model the chemical evolution of Earth driven by iron/silicate differentiation during the planet's accretion. The press…
Constraining the Origin of Mars via Simulations of Multi-Stage Core Formation
Gabriel Nathan, David C. Rubie, Seth A. Jacobson
It remains an elusive goal to simultaneously model the astrophysics of Solar System accretion while reproducing the mantle chemistry of more than one inner terrestrial planet. Here…
Comparisons of the core and mantle compositions of earth analogs from different terrestrial planet formation scenarios
Jesse T. Gu, Rebecca A. Fischer, Matthew C. Brennan +5
The chemical compositions of Earth's core and mantle provide insight into the processes that led to their formation. N-body simulations, on the other hand, generally do not contain…
Metal-silicate partitioning of W and Mo and the role of carbon in controlling their abundances in the Bulk Silicate Earth
E. S. Jennings, S. A. Jacobson, D. C. Rubie +4
The liquid metal-liquid silicate partitioning of molybdenum and tungsten during core formation must be well-constrained in order to understand the evolution of Earth and other plan…
Noble gases and stable isotopes track the origin and early evolution of the Venus atmosphere
Guillaume Avice, Rita Parai, Seth Jacobson +3
The composition the atmosphere of Venus results from the integration of many processes entering into play over the entire geological history of the planet. Determining the elementa…
Impact Induced Atmosphere-Mantle Exchange Sets the Volatile Elemental Ratios on Primitive Earths
Howard Chen, Seth A. Jacobson
Conventional planet formation theory suggests that chondritic materials have delivered crucial atmospheric and hydrospheric elements such as carbon (C), nitrogen (N), and hydrogen…
Stochastic accretion of the Earth
Paolo A. Sossi, Ingo L. Stotz, Seth A. Jacobson +2
Earth is depleted in volatile elements relative to chondritic meteorites, its possible building blocks. The extent of this depletion increases with decreasing condensation temperat…
Predictions for the Dynamical States of the Didymos System before and after the Planned DART Impact
Derek C. Richardson, Harrison F. Agrusa, Brent Barbee +33
NASA's Double Asteroid Redirection Test (DART) spacecraft is planned to impact the natural satellite of (65803) Didymos, Dimorphos, around 23:14 UTC on 26 September 2022, causing a…
Early Solar System instability triggered by dispersal of the gaseous disk
Beibei Liu, Sean N. Raymond, Seth A. Jacobson
The Solar System's orbital structure is thought to have been sculpted by an episode of dynamical instability among the giant planets. However, the instability trigger and timing ha…
The Metal-Silicate Partitioning of Carbon During Earth's Accretion and its Distribution in the Early Solar System
I. Blanchard, D. C. Rubie, E. S. Jennings +6
Carbon is an essential element for the existence and evolution of life on Earth. Its abundance in Earth's crust and mantle (the Bulk Silicate Earth, BSE) is surprisingly high given…
The "Breaking The Chains" migration model for super-Earths formation: the effect of collisional fragmentation
Leandro Esteves, André Izidoro, Bertram Bitsch +4
Planets between 1-4 Earth radii with orbital periods <100 days are strikingly common. The migration model proposes that super-Earths migrate inwards and pile up at the disk inner e…
Barrel Instability in Binary Asteroids
Matija Ćuk, Seth A. Jacobson, Kevin J. Walsh
Most close-in planetary satellites are in synchronous rotation, which is usually the stable end-point of tidal despinning. Saturn's moon Hyperion is a notable exception by having a…
The Excited Spin State of Dimorphos Resulting from the DART Impact
Harrison F. Agrusa, Ioannis Gkolias, Kleomenis Tsiganis +12
The NASA Double Asteroid Redirection Test (DART) mission is a planetary defense-driven test of a kinetic impactor on Dimorphos, the satellite of the binary asteroid 65803 Didymos.…
The Effect of Inefficient Accretion on Planetary Differentiation
Saverio Cambioni, Seth A. Jacobson, Alexandre Emsenhuber +5
Pairwise collisions between terrestrial embryos are the dominant means of accretion during the last stage of planet formation. Hence, their realistic treatment in N-body studies is…
How Sublimation Delays the Onset of Dusty Debris Disk Formation Around White Dwarf Stars
Jordan K. Steckloff, John Debes, Amy Steele +4
Although numerous white dwarf stars host dusty debris disks, the temperature distribution of these stars differs significantly from the white dwarf population as a whole. Dusty deb…
Quantitative estimates of impact induced crustal erosion during accretion and its influence on the Sm/Nd ratio of the Earth
Laetitia Allibert, Sébastien Charnoz, Julien Siebert +2
Dynamical scenarios of terrestrial planets formation involve strong perturbations of the inner part of the solar system by the giant-planets, leading to enhanced impact velocities…
Small Bodies Tell the Story of the Solar System: A Scientific Rationale for a Multi-Target Small Body Sample Return Program including the Earth-based Laboratory Analysis of Returned Samples
Seth A. Jacobson, Maitrayee Bose, Dennis Bodewits +6
Small bodies are time-capsules of different eras of solar system history from the most primitive materials within the solar system to evolved pieces of larger bodies. A small body…
Scaling laws for the geometry of an impact-induced magma ocean
Miki Nakajima, Gregor J. Golabek, Kai Wünnemann +6
Here, we develop scaling laws for (1) the distribution of impact-induced heat within the mantle and (2) shape of the impact-induced melt based on more than 100 smoothed particle hy…
Subsolar Al/Si and Mg/Si ratios of non-carbonaceous chondrites reveal planetesimal formation during early condensation in the protoplanetary disk
A. Morbidelli, G. Libourel, H. Palme +2
The Al/Si and Mg/Si ratios in non-carbonaceous chondrites are lower than the solar (i.e., CI-chondritic) values, in sharp contrast to the non-CI carbonaceous meteorites and the Ear…
Chemical Diversity of Super-Earths As a Consequence of Formation
Jennifer Scora, Diana Valencia, Alessandro Morbidelli +1
Recent observations of rocky super-Earths have revealed an apparent wider distribution of Fe/Mg ratios, or core to mantle ratios, than the planets in our Solar System. This study a…
Formation of compact systems of super-Earths via dynamical instabilities and giant impacts
Sanson T. S. Poon, Richard P. Nelson, Seth A. Jacobson +1
NASA's Kepler mission discovered planets in multi-planet systems containing 3 or more transiting bodies, many of which are super-Earths and mini-Neptunes in compact confi…
Constraints on terrestrial planet formation timescales and equilibration processes in the Grand Tack scenario from Hf-W isotopic evolution
Nicholas G. Zube, Francis Nimmo, Rebecca Fischer +1
We examine 141 N-body simulations of terrestrial planet late-stage accretion that use the Grand Tack scenario, coupling the collisional results with a hafnium-tungsten (Hf-W) isoto…
Population control of Mars Trojans by the Yarkovsky & YORP effects
Apostolos A. Christou, Galin Borisov, Aldo Dell'Oro +3
We explore the hypothesis that the population of Martian Trojans is the result of a balance between the production of new asteroids ("YORPlets") through the YORP effect and their e…