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Discovery of an Inflated Hot Neptune and Its Formation from Jovian Mass Loss
Grant C. Weldon, Samuel W. Yee, Bradley M. S. Hansen +17
The production of Neptune-like planets with orbital periods of 3--6 days is challenging for conventional models of high-eccentricity migration. We present the discovery and charact…
Observational and Dynamical Constraints on an Unseen Outer Perturber in the GJ 436 Hot Neptune System
Haedam Im, Tiger Lu, Malena Rice +3
Hot Neptunes in the sub-Jovian desert offer unique insights into planetary system evolution, retaining signatures of dynamical processes that shaped their present-day architectures…
Saving Doomed Planets: Mass Loss and Angular Momentum Return Boost Hot Jupiter Survival Rates
Grant C. Weldon, Bradley M. S. Hansen, Smadar Naoz
The existence of giant extrasolar planets on short-period orbits ("hot Jupiters") challenges planet formation theories because such planets are difficult to form close to the star.…
Peekaboo: Secular Resonances from Evolving Stellar Oblateness Impede Transit Detection
Thea Faridani, Smadar Naoz, Gongjie Li +2
Secular resonances in exoplanet systems occur when two or more planets have commensurabilities in the precession rates of their orbital elements, causing an exchange of angular mom…
The cold Jupiter eccentricity distribution is consistent with EKL driven by stellar companions
Grant C. Weldon, Smadar Naoz, Bradley M. S. Hansen
The large eccentricities of cold Jupiters and the existence of hot Jupiters have long challenged theories of planet formation. A proposed solution to both of these puzzles is high-…
Two Novel Hot Jupiter Formation Pathways: How White Dwarf Kicks Shape the Hot Jupiter Population
Alexander P. Stephan, David V. Martin, Smadar Naoz +2
The origin of Hot Jupiters (HJs) is disputed between a variety of in situ and ex situ formation scenarios. One of the early proposed ex situ scenarios was the Eccentric Kozai-Lidov…