High-resolution spectroscopy

Observations of exoplanets at high wavelength resolution allow us to probe their dynamics (i.e., winds and rotation, due to Doppler shifts) and to detect trace atmospheric absorbers which cannot be unambiguously identified otherwise. This includes species such as isotopologues, which may be an alternative window into the formation history of a planet. Our work focuses on developing novel retrieval techniques for high-resolution observations, and on modeling planet spectra in 3-d, taking the atmospheric dynamics as well as temperature and compositional gradients into account. For our work we make use of data from instruments such as CRIRES+ and CARMENES.