My research focuses on understanding how planetary systems form by studying the atmospheres, orbits, and spins of exoplanets. With Keck/KPIC, I led a large abundance survey of directly imaged planets and brown dwarf companions and found that distant companions weighing more than 10 M_Jup have similar carbon and oxygen abundances as their stars, pointing to a gravitational instability origin. With JWST, I am currently pushing this survey to the core accretion regime to study how giant planets obtain their metal-rich atmospheres.

I use optical interferometry and high-resolution spectroscopy to discover and characterize tight brown dwarf binaries around stars. In 2024, I resolved the first known brown dwarf companion, Gliese 229 B, into two brown dwarfs on a 12-day orbit.

I also work on measuring the 3-D orbital architectures and dynamical masses of giant planets by combining multiple detection techniques. This led to one of the rare mutual inclination measurements between a transiting inner planet and outer giant planet. I am organizing efforts to expand studies of planetary architectures and demographics to the population level with the upcoming Gaia epoch astrometry, and extracting the maximum science from existing Gaia and Hipparcos data.