Cloudy with a chance of metals: Indications of CO${}_2$ in the atmosphere of GJ 1214 b from high-resolution K-band spectroscopy

L. Nortmann, D. Cont, F. Lesjak +13

Sub-Neptune exoplanets frequently exhibit muted transmission spectra, with GJ 1214 b being the most prominent example. Following years of intense observing campaigns yielding featu…