3 papers
astro-ph.EP2026
How Many Transiting Giant Planets Can JWST Search for Moons and Rotational Oblateness?
Le-Chris Wang, Joshua N. Winn
Observations with the {\it James Webb Space Telescope} (JWST) can, in principle, detect moons and rotational oblateness of giant exoplanets through subtle distortions of transit li…
astro-ph.EP2026
A Massive Hot-Jupiter Companion that Disfavors Giant Planet Formation Beyond the Water-Ice Line
Eritas Yang, Tiger Lu, Daniel A. Yahalomi +1
We report evidence for a brown-dwarf companion with mass in the KELT-20 system, in which an ultra-hot Jupiter transits an A2-type star. The companion's p…
astro-ph.EP2025
A third star in the HAT-P-7 system, and a new dynamical pathway to misaligned hot Jupiters
Eritas Yang, Yubo Su, Joshua N. Winn
The retrograde orbit of the hot Jupiter HAT-P-7b is suggestive of high-eccentricity migration caused by dynamical interactions with a massive companion. However, the only other kno…