High-resolution emission spectroscopy retrievals of MASCARA-1b with CRIRES+: Strong detections of CO, H${}_2$O and Fe emission lines and a C$/$O consistent with solar

Swaetha Ramkumar, Neale P. Gibson, Stevanus K. Nugroho +2

The characterization of exoplanet atmospheres has proven to be successful using high-resolution spectroscopy. Phase curve observations of hot/ultra-hot Jupiters can reveal their co…