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HST hot-Jupiter transmission spectral survey: Haze in the atmosphere of WASP-6b
N. Nikolov, D. K. Sing, A. S. Burrows +14
We report Hubble Space Telescope (HST) optical to near-infrared transmission spectroscopy of the hot Jupiter WASP-6b, measured with the Space Telescope Imaging Spectrograph (STIS)…
The MgI line: a new probe of the atmospheres of evaporating exoplanets
V. Bourrier, A. Lecavelier des Etangs, A. Vidal-Madjar
Transit observations of HD209458b in the UV revealed signatures of neutral magnesium escaping the planet's upper atmosphere. The absorption detected in the MgI line provides unprec…
HST hot-Jupiter transmission spectral survey: detection of potassium in WASP-31b along with a cloud deck and Rayleigh scattering
D. K. Sing, H. R. Wakeford, A. P. Showman +15
We present Hubble Space Telescope optical and near-IR transmission spectra of the transiting hot-Jupiter WASP-31b. The spectrum covers 0.3-1.7 m at a resolution 70, which…
Modeling magnesium escape from HD209458b atmosphere
V. Bourrier, A. Lecavelier des Etangs, A. Vidal-Madjar
Transit observations in the MgI line of HD209458b revealed signatures of neutral magnesium escaping the upper atmosphere of the planet, while no atmospheric absorption was found in…
The Earth as an extrasolar transiting planet - II: HARPS and UVES detection of water vapor, biogenic O, and O
Luc Arnold, David Ehrenreich, Alfred Vidal-Madjar +9
The atmospheric composition of transiting exoplanets can be characterized during transit by spectroscopy. For the transit of an Earth twin, models predict that biogenic and $…
Exocomets in the circumstellar gas disk of HD 172555
Flavien Kiefer, Alain Lecavelier des Etangs, Jean-Charles Augereau +3
The source HD172555 is a young A7V star surrounded by a debris disk with a gaseous component. Here, we present the detection of variable absorption features detected simultaneously…