19 citations · 41 across the 9 of their papers we have counts for
10 papers
Formation of Ryugu's parent planetesimal beyond the CO snow line from small pebbles: insights from thermal evolution modeling
Sota Arakawa, Hidenori Genda, Noriyuki Kawasaki +3
Astronomical observations of planet-forming circumstellar disks indicate that planetesimals form from 0.1-mm- to 1-cm-sized dust aggregates, commonly called ``pebbles.'' When such…
Effect of lunar rotation on antipodal ejecta deposition
Shigeru Wakita, Brandon C. Johnson
The Moon's crust exhibits strong magnetic anomalies that likely record ancient magnetic fields produced by a core dynamo. Lunar materials have low magnetic susceptibility, but impa…
Chondrite Parent Bodies as Escaped Satellites of Proto-Planetary Embryos
Harold F. Levison, Rogerio Deienno, Kevin J. Walsh +4
Chondrites are composed of formerly partially molten material, known as chondrules, surrounded by fine-grained matrix. They date from the earliest times in Solar System history. Ho…
Numerical Simulations of Hypervelocity Micrometeoroid Impacts: Rocky Impactors onto Icy Targets and the Role of Porosity
Ryuki Hyodo, Shigeru Wakita, Brandon C. Johnson
In the outer Solar System, for example in the Saturnian system, a planet's strong gravity attracts micrometeoroids and generates hypervelocity impacts on bodies such as rings and s…
A youthful Titan implied by improved impact simulations
Shigeru Wakita, Brandon C. Johnson, Jason M. Soderblom +1
The small number of impact craters found on Titan suggests that its surface is relatively young. Previous work estimated its surface age to be between 200 and 1000 Myr. This estima…
Impacts into Titan's methane-clathrate crust as a source of atmospheric methane
Shigeru Wakita, Brandon C. Johnson, Jason M. Soderblom +5
Titan is the only icy satellite in the solar system with a dense atmosphere. This atmosphere is composed primarily of nitrogen with a few percent methane, which supports an active,…