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Optical transmission photometry of the highly inflated exoplanet WASP-17b

Bento (Da Silva Bento), Joao; Wheatley, P J; Copperwheat, Chris M.; Fortney, Jonathon; Dhillon, Vik S.; Hickman, R; Littlefair, Stuart P.; Marsh, T. R.; Parsons, Steven G.; Southworth, J


We present ground-based high-precision observations of the transit of WASP-17b using the multiband photometer ULTRACAM on ESO's New Technology Telescope (NTT) in the context of performing transmission spectrophotometry of this highly inflated exoplanet. Our choice of filters (SDSS u′, g′ and r′ bands) is designed to probe for the presence of opacity sources in the upper atmosphere. We find evidence for a wavelength dependence in the planet radius in the form of enhanced absorption in the SDSS...[Show more]

CollectionsANU Research Publications
Date published: 2014
Type: Journal article
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1093/mnras/stt1979
Access Rights: Open Access


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