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13 papers · 2 filters
Theory of Secular Chaos and Mercury's Orbit
Yoram Lithwick, Yanqin Wu
We study the chaotic orbital evolution of planetary systems, focusing on secular (i.e., orbit-averaged) interactions, because these often dominate on long timescales. We first focu…
Secular Chaos and the Production of Hot Jupiters
Yanqin Wu, Yoram Lithwick
In a planetary system with two or more well-spaced, eccentric, inclined planets, secular interactions may lead to chaos. The innermost planet may gradually become very eccentric an…
Runaway Growth During Planet Formation: Explaining the Size Distribution of Large Kuiper Belt Objects
Hilke E. Schlichting, Reem Sari
Runway growth is an important stage in planet formation during which large protoplanets form, while most of the initial mass remains in small planetesimals. The amount of mass conv…
Near-infrared Thermal Emission from WASP-12b: detections of the secondary eclipse in Ks, H & J
Bryce Croll, David Lafreniere, Loic Albert +3
We present Ks, H & J-band photometry of the very highly irradiated hot Jupiter WASP-12b using the Wide-field Infrared Camera on the Canada-France-Hawaii telescope. Our photometry b…
The Mechanical Greenhouse: Burial of Heat by Turbulence in Hot Jupiter Atmospheres
Andrew N. Youdin, Jonathan L. Mitchell
The intense irradiation received by hot Jupiters suppresses convection in the outer layers of their atmospheres and lowers their cooling rates. "Inflated" hot Jupiters, i.e., those…
The Directly Imaged Planet around the Young Solar Analog 1RXS J160929.1-210524: Confirmation of Common Proper Motion, Temperature and Mass
David Lafrenière, Ray Jayawardhana, Marten H. van Kerkwijk
Giant planets are usually thought to form within a few tens of AU of their host stars, and hence it came as a surprise when we found what appeared to be a planetary mass (~0.008 Ms…