446 citations · 1.2k across the 18 of their papers we have counts for
14 papers · 1 filter
Planet Migration through a Self-Gravitating Planetesimal Disk
Alexander J. Moore, Alice C. Quillen, Richard G. Edgar
We simulate planet migration caused by interactions between planets and a planetesimal disk. We use an N-body integrator optimized for near-Keplerian motion that runs in parallel o…
Type II Migration: Varying Planet Mass and Disc Viscosity
Richard G. Edgar
This paper continues an earlier study of giant planet migration, examining the effect of planet mass and disc viscosity on the migration rate. We find that the migration rate of a…
The Formation of Crystalline Dust in AGB Winds from Binary Induced Spiral Shocks
R. G. Edgar, J. Nordhaus, E. Blackman +1
As stars evolve along the Asymptotic Giant Branch, strong winds are driven from the outer envelope. These winds form a shell, which may ultimately become a planetary nebula. Many p…
Evidence for Growth of Eccentricity and Mass Clearing in a Disc Interior to a Planet
Richard G. Edgar, Eric Blackman, Alice Quillen +2
We present computational results showing eccentricity growth in the inner portions of a protoplanetary disc. We attribute this to the evolving surface density of the disc. The plan…
The Minimum Gap-opening Planet Mass in an Irradiated Circumstellar Accretion Disk
Richard G. Edgar, Alice C. Quillen, Jaehong Park
We consider the minimum mass planet, as a function of radius, that is capable of opening a gap in an -accretion disk. We estimate that a half Jupiter mass planet can open a gap…
Giant Planet Migration in Viscous Power-Law Discs
R. G. Edgar
Many extra-solar planets discovered over the past decade are gas giants in tight orbits around their host stars. Due to the difficulties of forming these `hot Jupiters' in situ, th…