H2 O abundances and cloud properties in ten hot giant exoplanets
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Abstract
Transmission spectroscopy of exoplanets has the potential to provide precise
measurements of atmospheric chemical abundances, in particular of hot Jupiters
whose large sizes and high temperatures make them conducive to such
observations. To date, several transmission spectra of hot Jupiters have
revealed low amplitude features of water vapour compared to expectations from
cloud-free atmospheres of solar metallicity. The low spectral amplitudes in
such atmospheres could either be due to the presence of aerosols that obscure
part of the atmosphere or due to inherently low abundances of H
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1365-2966
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Science and Technology Facilities Council (ST/N000927/1)