Molecular Characterisation of Exoplanet Atmospheres with High-Resolution Transmission Spectroscopy

Whilst JWST has dominated the spotlight in recent years, high-resolution spectroscopy with large ground-based telescopes presents significant scientific opportunities for the chemical characterisation of exoplanet atmospheres. However, ground-based observations are complicated and limited by contamination from the Earth’s own atmospheric absorption, meaning this technique has traditionally been limited to large and close-in planets, such as hot Jupiters.  In this talk, I will present work aiming to address limitations in standard telluric correction methodologies, with the goal of extending ground-based high-resolution spectroscopy towards the robust characterisation of more temperate, low-mass planets. I will finish by presenting recent results for the atmospheric characterisation of a temperate super-Earth.