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The orbital motion, absolute mass and high-altitude winds of exoplanet HD 209458b
High-dispersion ground-based spectroscopy of a transit of the extrasolar planet HD 209458b sees a significant wavelength shift in absorption lines from carbon monoxide in the planet’s atmosphere, which is concluded arises from a change in the radial component of the planet's orbital velocity. Expand
The signature of orbital motion from the dayside of the planet τ Boötis b
The detection of carbon monoxide absorption in the thermal dayside spectrum of τ Boötis b supports the hypothesis that the absorbing compounds believed to cause such atmospheric inversions are destroyed in τ Bo Ötis b by the ultraviolet emission from the active host star. Expand
Optical to near-infrared transit observations of super-Earth GJ 1214b: water-world or mini-Neptune?
Context. GJ1214b, the 6.55 Earth-mass transiting planet recently discovered by the MEarth team, has a mean density of∼35% of that of the Earth. It is thought that this planet is either a mini-NExpand
Fast spin of the young extrasolar planet β Pictoris b
The combined line profile exhibits a rotational broadening of about 25 kilometres per second, meaning that β Pictoris b spins significantly faster than any planet in the Solar System, in line with the extrapolation of the known trend in spin velocity with planet mass. Expand
The fast spin-rotation of a young extrasolar planet
The spin-rotation of a planet arises from the accretion of angular momentum during its formation, but the details of this process are still unclear. In the solar system, the equatorial rotationExpand
The NEMESIS planetary atmosphere radiative transfer and retrieval tool
With the exception of in situ atmospheric probes, the most useful way to study the atmospheres of other planets is to observe their electromagnetic spectra through remote observations, either fromExpand
Combining high-dispersion spectroscopy with high contrast imaging : Probing rocky planets around our nearest neighbors
Context. Ground-based high-dispersion (R 100,000) spectroscopy (HDS) is proving to be a powerful technique with which to characterize extrasolar planets. The planet signal is distilled from theExpand
Rotation and winds of exoplanet HD 189733 b measured with high-dispersion transmission spectroscopy
Giant exoplanets orbiting very close to their parent star (hot Jupiters) are subject to tidal forces expected to synchronize their rotational and orbital periods on short timescales (tidal locking).Expand
Detection of water absorption in the day side atmosphere of HD 189733 b using ground-based high-resolution spectroscopy at 3.2 μm
We report a 4.8{$σ$} detection of water absorption features in the day side spectrum of the hot Jupiter HD 189733 b. We used high-resolution (R {\tilde} 100 000) spectra taken at 3.2 {$μ$}m withExpand
Exoplanet observations promise one day to unveil the presence of extraterrestrial life. Atmospheric compounds in strong chemical disequilibrium would point to large-scale biological activity just asExpand