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6 papers · 2 filters
Effects of Planetesimal Accretion on the Thermal and Structural Evolution of Sub-Neptunes
Sourav Chatterjee, Howard Chen
A remarkable discovery of NASA's Kepler mission is the wide diversity in the average densities of planets of similar mass. After gas disk dissipation, fully formed planets could in…
Phase Offsets and the Energy Budgets of Hot Jupiters
Joel C. Schwartz, Zane Kashner, Diana Jovmir +1
Thermal phase curves of short-period planets on circular orbits provide joint constraints on the fraction of incoming energy that is reflected (Bond albedo) and the fraction of abs…
Outcomes of Grazing Impacts Between Sub-Neptunes in Kepler Multis
Jason Hwang, Sourav Chatterjee, James Lombardi +2
Studies of high-multiplicity, tightly-packed planetary systems suggest that dynamical instabilities are common and affect both the orbits and planet structures, where the compact o…
Roche-lobe overflow in eccentric planet-star systems
Fani Dosopoulou, Smadar Naoz, Vassiliki Kalogera
Many giant exoplanets are found near their Roche limit and in mildly eccentric orbits. In this study we examine the fate of such planets through Roche-lobe overflow as a function o…
Dynamics and Collisional Evolution of Closely Packed Planetary Systems
Jason A. Hwang, Jason H. Steffen, James C. Lombardi +1
High-multiplicity Kepler systems (referred to as Kepler multis) are often tightly packed and may be on the verge of instability. Many systems of this type could have experienced pa…
The Gold Standard: Accurate Stellar and Planetary Parameters for Eight Kepler M dwarf Systems Enabled by Parallaxes
Andrew W. Mann, Trent Dupuy, Philip S. Muirhead +6
We report parallaxes and proper motions from the Hawaii Infrared Parallax Program for eight nearby M dwarf stars with transiting exoplanets discovered by Kepler. We combine our dir…