10.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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34 papers · 2 filters
SOPHIE velocimetry of Kepler transit candidates II. KOI-428b: a hot Jupiter transiting a subgiant F-star
A. Santerne, R. F. Diaz, F. Bouchy +7
We report the discovery of a hot Jupiter transiting a subgiant star with an orbital period of 6.87 days thanks to public photometric data from the Kepler space mission and new radi…
The upper atmosphere of the exoplanet HD209458b revealed by the sodium D lines: Temperature-pressure profile, ionization layer, and thermosphere
A. Vidal-Madjar, D. K. Sing, A. Lecavelier des Etangs +6
A complete reassessment of the HST observations of the transits of the extrasolar planet HD209458b has provided a transmission spectrum of the atmosphere over a wide range of wavel…
Nonlinear energy transfers in accretion discs MRI turbulence. I-Net vertical field case
Geoffroy Lesur, Pierre-Yves Longaretti
The magnetorotational instability (MRI) is believed to be responsible for most of the angular momentum transport in accretion discs. However, molecular dissipation processes may dr…
The HARPS search for southern extra-solar planets: XXVIII. Two giant planets around M0 dwarfs
Thierry Forveille, Xavier Bonfils, Gaspare Lo Curto +11
Fewer giants planets are found around M dwarfs than around more massive stars, and this dependence of planetary characteristics on the mass of the central star is an important obse…
A new perspective on the irregular satellites of Saturn - I Dynamical and collisional history
D. Turrini, F. Marzari, H. Beust
The dynamical features of the irregular satellites of the giant planets argue against an in-situ formation and are strongly suggestive of a capture origin. Since the last detailed…
Triplicity and Physical Characteristics of Asteroid (216) Kleopatra
Pascal Descamps, F. Marchis, J. Berthier +16
To take full advantage of the September 2008 opposition passage of the M-type asteroid (216) Kleopatra, we have used near-infrared adaptive optics (AO) imaging with the W.M. Keck I…
The cold origin of the warm dust around epsilon Eridani
Martin Reidemeister, Alexander V. Krivov, Christopher C. Stark +3
Context: The K2V star eps Eri hosts one known inner planet, an outer Kuiper belt analog, and an inner disk of warm dust. Spitzer/IRS measurements indicate that the warm dust is pre…
On the volatile enrichments and heavy element content in HD 189733b
O. Mousis, J. I. Lunine, J. -M. Petit +13
Favored theories of giant planet formation center around two main paradigms, namely the core accretion model and the gravitational instability model. These two formation scenarios…
The HARPS search for southern extrasolar planets XXV. Results from the metal-poor sample
N. C. Santos, M. Mayor, X. Bonfils +10
Searching for extrasolar planets around stars of different metallicity may provide strong constraints to the models of planet formation and evolution. In this paper we present the…
Planetary systems in close binary stars: the case of HD196885
G. Chauvin, H. Beust, A. -M. Lagrange +1
Planets can form and survive in close binaries, although dynamical interactions with the secondary component can actually significantly impact the giant planet formation and evolut…
A frozen super-Earth orbiting a star at the bottom of the Main Sequence
D. Kubas, J. P. Beaulieu, D. P. Bennett +19
We observed the microlensing event MOA-2007-BLG-192 at high angular resolution in JHKs with the NACO adaptive optics system on the VLT while the object was still amplified by a fac…
The HARPS search for southern extrasolar planets. XXIII. 8 planetary companions to low-activity solar-type stars
Dominique Naef, Michel Mayor, Gaspare Lo Curto +17
In this paper, we present our HARPS radial-velocity data for eight low-activity solar-type stars belonging to the HARPS volume-limited sample: HD6718, HD8535, HD28254, HD290327, HD…
Transit spectrophotometry of the exoplanet HD189733b. II. New Spitzer observations at 3.6 microns
J. -M. Desert, D. Sing, A. Vidal-Madjar +6
We present a new primary transit observation of the hot-jupiter HD189733b, obtained at 3.6 microns with the Infrared Array Camera (IRAC) onboard the Spitzer Space Telescope. Previo…
Debris discs in binaries: a numerical study
Philippe Thebault, Francesco Marzari, Jean-Charles Augereau
Debris disc analysis and modelling provide crucial information about the structure and the processes at play in extrasolar planetary systems. In binary systems, this issue is more…
Gran Telescopio Canarias OSIRIS Transiting Exoplanet Atmospheric Survey: Detection of potassium in XO-2b from narrowband spectrophotometry
D. K. Sing, J. -M. Desert, J. J. Fortney +8
We present Gran Telescopio Canarias (GTC) optical transit narrow-band photometry of the hot-Jupiter exoplanet XO-2b using the OSIRIS instrument. This unique instrument has the capa…
The 2008 outburst in the young stellar system ZCMa: I. Evidence of an enhanced bipolar wind on the AU-scale
M. Benisty, F. Malbet, C. Dougados +15
Accretion is a fundamental process in star formation. Although the time evolution of accretion remains a matter of debate, observations and modelling studies suggest that episodic…
The Earth as an extrasolar transiting planet: Earth's atmospheric composition and thickness revealed by Lunar eclipse observations
Alfred Vidal-Madjar, Luc Arnold, David Ehrenreich +24
An important goal within the quest for detecting an Earth-like extrasolar planet, will be to identify atmospheric gaseous bio-signatures. Observations of the light transmitted thro…
The SOPHIE search for northern extrasolar planets III. A Jupiter-mass companion around HD 109246
I. Boisse, A. Eggenberger, N. C. Santos +22
We report the detection of a Jupiter-mass planet discovered with the SOPHIE spectrograph mounted on the 1.93-m telescope at the Haute-Provence Observatory. The new planet orbits HD…
Dead zones in protostellar discs: the case of Jet Emitting Discs
Céline Combet, Jonathan Ferreira, Fabien Casse
Planet formation and migration in accretion discs is a very active topic. Among the many aspects related to that question, dead zones are of particular importance as they can influ…
A giant planet imaged in the disk of the young star Beta Pictoris
A. -M. Lagrange, M. Bonnefoy, G. Chauvin +8
Here we show that the ~10 Myr Beta Pictoris system hosts a massive giant planet, Beta Pictoris b, located 8 to 15 AU from the star. This result confirms that gas giant planets form…
Kuiper Belts Around Nearby Stars
R. Nilsson, R. Liseau, A. Brandeker +10
In order to detect and characterise cold extended circumstellar dust originating from collisions of planetesimal bodies in disks, belts, or rings at Kuiper-Belt distances (30-50 AU…
Searching for sub-stellar companion into the LkCa15 proto-planetary disk
M. Bonavita, G. Chauvin, A. Boccaletti +8
Recent sub-millimetric observations at the Plateau de Bure interferometer evidenced a cavity at ~ 46 AU in radius into the proto-planetary disk around the T Tauri star LkCa15 (V107…
Orbital eccentricity of WASP-12 and WASP-14 from new radial-velocity monitoring with SOPHIE
Nawal Husnoo, Frederic Pont, Guillaume Hebrard +9
As part of the long-term radial velocity monitoring of known transiting planets -- designed to measure orbital eccentricities, spin-orbit alignments and further planetary companion…
A procedure to analyze nonlinear density waves in Saturn's rings using several occultation profiles
N. J. Rappaport, P. -Y. Longaretti, R. G. French +2
Cassini radio science experiments have provided multiple occultation optical depth profiles of Saturn's rings that can be used in combination to analyze density waves. This paper e…