University of Montreal
The dayside of the coolest ultra-hot Jupiter, KELT-20b, resolved with eclipse mapping — This project will produce the most precise 3D temperature map of an exoplanet to date using JWST/NIRSpec eclipse mapping of the ultra-hot Jupiter KELT-20b. Sensitive to water and CO emission, the observations will probe horizontal and vertical temperature structure, revealing how stellar energy is redistributed and how molecular dissociation shapes the atmosphere. The results will also constrain the planet’s C/O and refractory-to-volatile ratios, which are key tracers of its formation and migration.