6 citations · 9 across the 5 of their papers we have counts for
7 papers
Absolute Motion of the Infrared Counterpart to Sagittarius A* in the Gaia Celestial Reference Frame 3 and Limits on an Intermediate-mass Black Hole Companion
Rebecca A. Lewis-Merrill, Tuan Do, Matthew W. Hosek +9
We report the first proper motion and acceleration measurements of the infrared (IR) counterpart to Sagittarius A* (Sgr A*-IR), the supermassive black hole (SMBH) at the center of…
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…
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.…
New Evidence for a Flux-independent Spectral Index of Sgr A* in the Near-infrared
Hadrien Paugnat, Tuan Do, Abhimat K. Gautam +11
In this work, we measure the spectral index of Sagittarius A* (Sgr A*) between the (1.6 m) and (2.2 m) broadband filters in the near-infrared (NIR), sampling o…
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-…
Analytical models for secular descents in hierarchical triple systems
Grant C. Weldon, Smadar Naoz, Bradley M. S. Hansen
Triple body systems are prevalent in nature, from planetary to stellar to supermassive black hole scales. In a hierarchical triple system, oscillations of the inner orbit's eccentr…
Near-Infrared Flux Distribution of Sgr A* from 2005-2022: Evidence for an Enhanced Accretion Episode in 2019
Grant C. Weldon, Tuan Do, Gunther Witzel +10
Sgr A* is the variable electromagnetic source associated with accretion onto the Galactic center supermassive black hole. While the near-infrared (NIR) variability of Sgr A* was sh…