Detection of Na, K and H$_2$O in the hazy atmosphere of WASP-6b
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] $\simeq -0.9\pm0.3$ 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.
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Aarynn L. Carter (edit)
Nikolay Nikolov (edit)
David K. Sing (edit)
Munazza K. Alam (add twitter)
Jayesh M. Goyal (edit)
Thomas Mikal-Evans (add twitter)
Hannah R. Wakeford (edit)
Gregory W. Henry (edit)
Sam Morrell (edit)
Mercedes López-Morales (add twitter)
Barry Smalley (edit)
Panayotis Lavvas (add twitter)
Joanna K. Barstow (edit)
Antonio García Muñoz (add twitter)
Paul A. Wilson (edit)
Neale P. Gibson (add twitter)
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icarusinterstel: RT @AarynnCarter: Hey Twitter! Check out arXiv (https://t.co/1XaWv11dYn) for my first paper which shows off the latest @NASA_TESS, @NasaHu…
_Elvinho: RT @AarynnCarter: Hey Twitter! Check out arXiv (https://t.co/1XaWv11dYn) for my first paper which shows off the latest @NASA_TESS, @NasaHu…
lorduruz: RT @nikolov_astro: Great @ESO VLT FORS2, @NASAHubble and @NASAspitzer spectrum from @AarynnCarter at https://t.co/ybQ6mbBhMs, confirming h…
ScienceViolati1: Espectro bello del planeta WASP-6b. Puedes ver sodio, potasio, y agua en el espectro junto de la tierra y espacio. Revisa el artículo aquí: https://t.co/srVxUoSoVv https://t.co/vZbYANAD5x
ScienceViolati1: Beautiful joint space-based and ground-based transmission spectrum of the planet WASP-6b. Detections of sodium, potassium, water were made, and atmospheric haze confirmed!! Check out the paper: https://t.co/srVxUp9ZN3 https://t.co/rhRsoVrhfQ
a_pleiade: "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." https://t.co/0jKjwUYTF0
Tthuliomb: RT @AarynnCarter: Hey Twitter! Check out arXiv (https://t.co/1XaWv11dYn) for my first paper which shows off the latest @NASA_TESS, @NasaHu…
gbonnet78fr: RT @nikolov_astro: Great @ESO VLT FORS2, @NASAHubble and @NASAspitzer spectrum from @AarynnCarter at https://t.co/ybQ6mbBhMs, confirming h…
ases2019: RT @nikolov_astro: Great @ESO VLT FORS2, @NASAHubble and @NASAspitzer spectrum from @AarynnCarter at https://t.co/ybQ6mbBhMs, confirming h…
m57ring: RT @AarynnCarter: Hey Twitter! Check out arXiv (https://t.co/1XaWv11dYn) for my first paper which shows off the latest @NASA_TESS, @NasaHu…
nikolov_astro: Great @ESO VLT FORS2, @NASAHubble and @NASAspitzer spectrum from @AarynnCarter at https://t.co/ybQ6mbBhMs, confirming haze and finding Na, K and H2O at WASP-6b. An earthquake shook the VLT at a transit, yet the FORS2 data gave higher than HST resolution and agree well. Go FORS2! https://t.co/SwANv5QuaE
nikolov_astro: Great @ESO VLT FORS2, @NASAHubble and @NASAspitzer spectrum from @AarynnCarter at https://t.co/ybQ6mbBhMs, confirming haze and finding Na, K and H2O @WASP-6b. An earthquake shook the VLT at a transit, yet the FORS2 data gave higher than HST resolution and agree well. Go FORS2! https://t.co/t6Jq39wZ9P
nikolov_astro: RT @AarynnCarter: Hey Twitter! Check out arXiv (https://t.co/1XaWv11dYn) for my first paper which shows off the latest @NASA_TESS, @NasaHu…
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TroveMaster: RT @ExoSing: With @AarynnCarter's WFC3 spectra https://t.co/VfeU1ItDA6, the '16 continuum is now complete. Had two missing WFC3/IR spectra.…
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Astro_journey: RT @ExoSing: With @AarynnCarter's WFC3 spectra https://t.co/VfeU1ItDA6, the '16 continuum is now complete. Had two missing WFC3/IR spectra.…
StellarPlanet: RT @ExoSing: With @AarynnCarter's WFC3 spectra https://t.co/VfeU1ItDA6, the '16 continuum is now complete. Had two missing WFC3/IR spectra.…
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ExoSing: With @AarynnCarter's WFC3 spectra https://t.co/VfeU1ItDA6, the '16 continuum is now complete. Had two missing WFC3/IR spectra. @StellarPlanet completed WASP-39b https://t.co/Z4VxRexe2z finding multiple H2O features, and now the hazy WASP-6b finds a muted H2O feature as predicted https://t.co/MXVdjDOP87
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jxs606: RT @StarshipBuilder: Detection of Na, K and H2O in the hazy atmosphere of WASP-6b https://t.co/epcaVsgwOD
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StarshipBuilder: Detection of Na, K and H2O in the hazy atmosphere of WASP-6b https://t.co/epcaVsgwOD
physicsG27: RT @AarynnCarter: Hey Twitter! Check out arXiv (https://t.co/1XaWv11dYn) for my first paper which shows off the latest @NASA_TESS, @NasaHu…
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AarynnCarter: Hey Twitter! Check out arXiv (https://t.co/1XaWv11dYn) for my first paper which shows off the latest @NASA_TESS, @NasaHubble and @ESO VLT data for the hot Jupiter exoplanet WASP-6b. We find Na, K, and H2O in its atmosphere and account for some pesky stellar activity effects. https://t.co/G4T9BEcQWV
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