An Optical Transmission Spectrum for the Ultra-hot Jupiter WASP-121b Measured with the Hubble Space Telescope

Abstract We present an atmospheric transmission spectrum for the ultra-hot Jupiter WASP-121b, measured using the Space Telescope Imaging Spectrograph on board the Hubble Space Telescope . Across the 0.47–1 wavelength range, the data imply an atmospheric opacity comparable to—and in some spectroscopi... View More