CORDIS Project
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This project investigates the origins of hot Neptunes, exoplanets that may have lost their gas atmospheres. By combining infrared spectroscopy with traditional observations, it aims to develop models of atmospheric escape and orbital migration to understand these planets' evolution.
Half of known exoplanets orbit close to their star, featuring a desert of hot Neptunes whose origins remain uncertain.
These planets may have lost their gas atmosphere, eroding into the dust-rich rocky planets found below the desert.
Testing this scenario requires deriving accurate mass losses, but a lack of observational tracers prevented us from validating and refining models of escaping atmospheres.
The coupling of atmospheric evolution with orbital migration, which can bring planets close to…
UNIVERSITE DE GENEVE
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