Detection of iron emission lines and a temperature inversion on the dayside of the ultra-hot Jupiter KELT-20b
Ultra-hot Jupiters (UHJs) are gas giants with very high equilibrium temperatures. In recent years, multiple chemical species, including various atoms and ions, have been discovered in their atmospheres. Most of these observations have been performed with transmission spectroscopy, although UHJs are also ideal targets for emission spectroscopy due
Yan, F. et al.
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2022