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Atmospheric Escape from Hot Jupiters
Ruth Murray-Clay, Eugene Chiang, Norman Murray
Photoionization heating from UV radiation incident on the atmospheres of hot Jupiters may drive planetary mass loss. We construct a model of escape that includes realistic heating…
Inside-Out Evacuation of Transitional Protoplanetary Disks by the Magneto-Rotational Instability
Eugene I. Chiang, Ruth A. Murray-Clay
How do T Tauri disks accrete? The magneto-rotational instability (MRI) supplies one means, but protoplanetary disk gas is typically too poorly ionized to be magnetically active. He…
The Origin of the Young Stars in the Nucleus of M31
P. Chang, R. Murray-Clay, E. Chiang +1
The triple nucleus of M31 consists of a population of old red stars in an eccentric disk (P1 and P2) and another population of younger A stars in a circular disk (P3) around M31's…
Brownian Motion in Planetary Migration
Ruth A. Murray-Clay, Eugene I. Chiang
A residual planetesimal disk of mass 10-100 Earth masses remained in the outer solar system following the birth of the giant planets, as implied by the existence of the Oort cloud,…
A Brief History of Trans-Neptunian Space
E. Chiang, Y. Lithwick, R. Murray-Clay +3
The Edgeworth-Kuiper belt encodes the dynamical history of the outer solar system. Kuiper belt objects (KBOs) bear witness to coagulation physics, the evolution of planetary orbits…
A Signature of Planetary Migration: The Origin of Asymmetric Capture in the 2:1 Resonance
Ruth A. Murray-Clay, Eugene I. Chiang
The spatial distribution of Kuiper belt objects (KBOs) in 2:1 exterior resonance with Neptune constrains that planet's migration history. Numerical simulations demonstrate that fas…