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- W2990887113 abstract "We present new observations of the transmission spectrum of the hot Jupiter WASP-6b both from the ground with the Very Large Telescope (VLT) FOcal Reducer and Spectrograph (FORS2) from 0.45-0.83 $mu$m, and space with the Transiting Exoplanet Survey Satellite (TESS) from 0.6-1.0 $mu$m and the Hubble Space Telescope (HST) Wide Field Camera 3 from 1.12-1.65 $mu$m. Archival data from the HST Space Telescope Imaging Spectrograph (STIS) and Spitzer is also reanalysed on a common Gaussian process framework, of which the STIS data show a good overall agreement with the overlapping FORS2 data. We also explore the effects of stellar heterogeneity on our observations and its resulting implications towards determining the atmospheric characteristics of WASP-6b. Independent of our assumptions for the level of stellar heterogeneity we detect Na I, K I and H$_2$O absorption features and constrain the elemental oxygen abundance to a value of [O/H] $simeq -0.9pm0.3$ relative to solar. In contrast, we find that the stellar heterogeneity correction can have significant effects on the retrieved distributions of the [Na/H] and [K/H] abundances, primarily through its degeneracy with the sloping optical opacity of scattering haze species within the atmosphere. Our results also show that despite this presence of haze, WASP-6b remains a favourable object for future atmospheric characterisation with upcoming missions such as the James Webb Space Telescope." @default.
- W2990887113 created "2019-12-05" @default.
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- W2990887113 date "2020-04-22" @default.
- W2990887113 modified "2023-10-16" @default.
- W2990887113 title "Detection of Na, K, and H2O in the hazy atmosphere of WASP-6b" @default.
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