979 citations · 14.5k across the 149 of their papers we have counts for
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Stellar activity of planetary host star HD 189733
I. Boisse, C. Moutou, A. Vidal-Madjar +20
Extra-solar planet search programs require high-precision velocity measurements. They need to study how to disentangle radial-velocity variations due to Doppler motion from the noi…
NUV radii of the extrasolar planet HD 209458b
J. M. Desert, A. Vidal-Madjar, A. Lecavelier des Etangs +2
Extrasolar planetary transits are powerful tools to probe their atmosphere and to extract key physical properties of planets, like their mean densities, chemical compositions, or a…
TiO and VO broad band absorption features in the optical spectrum of the atmosphere of the hot-Jupiter HD209458b
J. -M. Desert, A. Vidal-Madjar, A. Lecavelier des Etangs +4
The presence of titanium oxide (TiO) and vanadium oxide (VO) gas phase species is searched for in the atmosphere of the hot Jupiter HD209458b. We compared a model for the planets t…
Atmospheric composition and structure of HD209458b
J. -M. Désert, A. Vidal-Madjar, A. Lecavelier des Etangs +4
Transiting planets like HD209458b offer a unique opportunity to scrutinize their atmospheric composition and structure. Transit spectroscopy probes the transition region between th…
Misaligned spin-orbit in the XO-3 planetary system?
G. Hebrard, F. Bouchy, F. Pont +20
The transiting extrasolar planet XO-3b is remarkable, with a high mass and eccentric orbit. The unusual characteristics make it interesting to test whether its orbital plane is par…
Discovery of a peculiar Cepheid-like star towards the northern edge of the Small Magellanic Cloud
J. B. Marquette, P. Tisserand, P. Francois +37
For seven years, the EROS-2 project obtained a mass of photometric data on variable stars. We present a peculiar Cepheid-like star, in the direction of the Small Magellanic Cloud,…
ELODIE metallicity-biased search for transiting Hot Jupiters V. An intermediate-period Jovian planet orbiting HD45652
N. C. Santos, S. Udry, F. Bouchy +20
We present the detection of a 0.47 Jupiter mass planet in a 44-day period eccentric trajectory (e=0.39) orbiting the metal-rich star HD45652. This planet, the seventh giant planet…
Rayleigh scattering by H2 in the extrasolar planet HD209458b
A. Lecavelier des Etangs, A. Vidal-Madjar, J. -M. Desert +1
Transiting planets, such as HD209458b, offer a unique opportunity to scrutinize the planetary atmospheric content. Although molecular hydrogen is expected to be the main atmospheri…
Molecular hydrogen in the circumstellar environments of Herbig Ae/Be stars probed by FUSE
C. Martin-Zaidi, M. Deleuil, J. Le Bourlot +7
We observed molecular hydrogen around a sample of pre-main sequence stars in order to better characterize their gaseous CS environments. We analyzed the FUSE (Far Ultraviolet Spect…
New observations of the extended hydrogen exosphere of the extrasolar planet HD209458b
David Ehrenreich, Alain Lecavelier des Etangs, Guillaume Hébrard +5
Atomic hydrogen escaping from the planet HD209458b provides the largest observational signature ever detected for an extrasolar planet atmosphere. However, the Space Telescope Imag…
Determining atmospheric conditions at the terminator of the hot-Jupiter HD209458b
David K. Sing, A. Vidal-Madjar, A. Lecavelier des Etangs +3
We present a theoretical model fit to the HST/STIS optical transit transmission spectrum of HD209458b. In our fit, we use the sodium absorption line profile along with the Rayleigh…
Rayleigh scattering in the transit spectrum of HD 189733b
A. Lecavelier des Etangs, F. Pont, A. Vidal-Madjar +1
The transit spectrum of the exoplanet HD 189733b has recently been obtained between 0.55 and 1.05 microns. Here we present an analysis of this spectrum. We develop first-order equa…
Exoplanet HD 209458b : Evaporation strengthened
A. Vidal-Madjar, A. Lecavelier des Etangs, J. -M. Desert +4
Following re-analysis of Hubble Space Telescope observations of primary transits of the extrasolar planet HD209458b at Lyman-alpha, Ben-Jaffel (2007, BJ007) claims that no sign of…
HST/STIS Optical Transit Transmission Spectra of the hot-Jupiter HD209458b
David K. Sing, A. Vidal-Madjar, J. -M. Desert +2
We present the transmission spectra of the hot-Jupiter HD209458b taken with the Space Telescope Imaging Spectrograph aboard the Hubble Space Telescope. Our analysis combines data a…
R Coronae Borealis stars in the Galactic Bulge discovered by EROS-2
P. Tisserand, J. B. Marquette, P. R. Wood +33
Rare types of variable star may give unique insight into short-lived stages of stellar evolution. The systematic monitoring of millions of stars and advanced light curve analysis t…
A Spitzer Search for Water in the Transiting Exoplanet HD189733b
David Ehrenreich, Guillaume Hébrard, Alain Lecavelier Des Etangs +5
We present Spitzer Space Telescope observations of the extrasolar planet HD189733b primary transit, obtained simultaneously at 3.6 and 5.8 microns with the Infrared Array Camera. T…
Water vapour in the atmosphere of a transiting extrasolar planet
Giovanna Tinetti, Alfred Vidal-Madjar, Mao-Chang Liang +10
Water is predicted to be among, if not the most abundant molecular species after hydrogen in the atmospheres of close-in extrasolar giant planets (hot-Jupiters) Several attempts ha…
Spectropolarimetric observations of the transiting planetary system of the K dwarf HD 189733
C. Moutou, J. -F. Donati, R. Savalle +7
With a Jupiter-mass planet orbiting at a distance of only 0.031 AU, the active K2 dwarf HD 189733 is a potential candidate in which to study the magnetospheric interactions of a co…
Elodie metallicity-biased search for transiting Hot Jupiters IV. Intermediate period planets orbiting the stars HD43691 and HD132406
R. Da Silva, S. Udry, F. Bouchy +21
We report here the discovery of two planet candidates as a result of our planet-search programme biased in favour of high-metallicity stars, using the ELODIE spectrograph at the Ob…
Refined parameters and spectroscopic transit of the super-massive planet HD147506b
B. Loeillet, A. Shporer, F. Bouchy +26
In this paper, we report a refined determination of the orbital parameters and the detection of the Rossiter-McLaughlin effect of the recently discovered transiting exoplanet HD147…
Infrared Transmission Spectra for Extrasolar Giant Planets
G. Tinetti, M. C. Liang, A. Vidal-Madjar +3
Among the hot Jupiters that transit their parent stars known to date, the two best candidates to be observed with transmission spectroscopy in the mid-infrared (MIR) are HD189733b…
Interstellar abundances in the neutral and ionized gas of NGC604
V. Lebouteiller, D. Kunth, J. Lequeux +5
We present FUSE spectra of the giant HII region NGC604 in the spiral galaxy M33. Chemical abundances are derived from far-UV absorption lines and are compared to those derived from…
Limits on the Macho Content of the Galactic Halo from the EROS-2 Survey of the Magellanic Clouds
P. Tisserand, L. Le Guillou, C. Afonso +35
The EROS-2 project was designed to test the hypothesis that massive compact halo objects (the so-called ``machos'') could be a major component of the dark matter halo of the Milky…
Removing the Microlensing Blending-Parallax Degeneracy Using Source Variability
R. J. Assef, A. Gould, the EROS-2 +2
Microlensing event MACHO 97-SMC-1 is one of the rare microlensing events for which the source is a variable star, simply because most variable stars are systematically eliminated f…