A. Léger

Publication List Details

Period

1968 - 2009

Number

51

Co-Authors

Planetary transit candidates in COROT-IRa01 field (2009)

Carpano, S., Cabrera, J., Alonso, R., Barge, P., Aigrain, S., ...

Context: CoRoT is a pioneering space mission devoted to the analysis of stellar variability and the photometric detection of extrasolar planets. Aims: We present the list of planetary transit...

Darwin —- a mission to detect and search for life on extrasolar planets (2009)

Cockell, C. S., Léger, A., Fridlund, M., Herbst, T. M., Kaltenegger, L., Absil, O., ...

The discovery of extrasolar planets is one of the greatest achievements of modern astronomy. The detection of planets that vary widely in mass demonstrates that extrasolar planets of low mass exist....

Darwin-A Mission to Detect and Search for Life on Extrasolar Planets (2009)

Cockell, C S, Léger, A, Fridlund, M, Herbst, T M, Kaltenegger, L, Absil, Olivier, ...

The discovery of extrasolar planets is one of the greatest achievements of modern astronomy. The detection of planets that vary widely in mass demonstrates that extrasolar planets of low mass exist....

PEGASE, an infrared interferometer to study stellar environments and low mass companions around nearby stars (2009)

Ollivier, M, Absil, Olivier, Allard, F, Berger, J-P, Bordé, P, Cassaing, F, ...

PEGASE is a mission dedicated to the exploration of the environment (including habitable zone) of young and solar-type stars (particularly those in the DARWIN catalogue) and the observation of low...

Transiting exoplanets from the CoRoT space mission . VI. CoRoT-Exo-3b: the first secure inhabitant of the brown-dwarf desert (2008)

Deleuil, M, Deeg, H J, Alonso, R, Bouchy, F, Rouan, D, Auvergne, M, ...

Context: The CoRoT space mission routinely provides high-precision photometric measurements of thousands of stars that have been continuously observed for months. Aims: The discovery and...

Transiting exoplanets from the CoRoT space mission. V. CoRoT-Exo-4b: stellar and planetary parameters (2008)

Moutou, C, Bruntt, H, Guillot, T, Shporer, A, Guenther, E, Aigrain, S, ...

Aims. The CoRoT satellite has announced its fourth transiting planet (Aigrain et al. 2008, A&A, 488, L43) with space photometry. We describe and analyse complementary observations of this system...

Transiting exoplanets from the CoRoT space mission. IV. CoRoT-Exo-4b: a transiting planet in a 9.2 day synchronous orbit (2008)

Aigrain, S, Collier Cameron, A, Ollivier, M, Pont, F, Jorda, L, Almenara, J M, ...

CoRoT, the first space-based transit search, provides ultra-high-precision light curves with continuous time-sampling over periods of up to 5 months. This allows the detection of transiting planets...

Transiting exoplanets from the CoRoT space mission. II. CoRoT-Exo-2b: a transiting planet around an active G star (2008)

Alonso, R, Auvergne, M, Baglin, A, Ollivier, M, Moutou, C, Rouan, D, ...

Context: The CoRoT mission, a pioneer in exoplanet searches from space, has completed its first 150 days of continuous observations of ~12 000 stars in the galactic plane. An analysis of the raw data...

Transiting exoplanets from the CoRoT space mission II. CoRoT-Exo-2b: A transiting planet around an active G star (2008)

Alonso, R., Auvergne, M., Baglin, A., Ollivier, M., Moutou, C., Rouan, D., ...

Context. The CoRoT mission, a pioneer in exoplanet searches from space, has completed its first 150 days of continuous observations of ~12000 stars in the galactic plane. An analysis of the raw data...

Transiting exoplanets from the CoRoT space mission III. The spectroscopic transit of CoRoT-Exo-2b with SOPHIE and HARPS (2008)

Bouchy, F., Queloz, D., Deleuil, M., Loeillet, B., Hatzes, A. P., Aigrain, S., ...

We report on the spectroscopic transit of the massive hot-Jupiter CoRoT-Exo-2b observed with the high-precision spectrographs SOPHIE and HARPS. By modeling the radial velocity anomaly occurring...

Transiting exoplanets from the CoRoT space mission: III. The spectroscopic transit of CoRoT-Exo-2b with SOPHIE and HARPS (2008)

Bouchy, F., Queloz, D., Deleuil, M., Loeillet, B., Hatzes, A., Aigrain, S., ...

We report on the spectroscopic transit of the massive hot-Jupiter CoRoT-Exo-2b observed with the high-precision spectrographs SOPHIE and HARPS. By modeling the radial velocity anomaly occurring...

Transiting exoplanets from the CoRoT space mission: II. CoRoT-Exo-2b: A transiting planet around an active G star (2008)

Alonso, R., Auvergne, M., Baglin, A., Ollivier, M., Moutou, C., Rouan, D., ...

Context. The CoRoT mission, a pioneer in exoplanet searches from space, has completed its first 150 days of continuous observations of ~12 000 stars in the galactic plane. An analysis of the raw data...

Transdet: a matched-filter based algorithm for transit detection - application to simulated COROT light curves (2007)

Bordé, P., Fressin, F., Ollivier, M., Léger, A., Rouan, D.

We present a matched-filter based algorithm for transit detection and its application to simulated COROT light curves. This algorithm stems from the work by Bord\'e, Rouan & L\'eger (2003). We...

ATLAS liquid argon calorimeter back end electronics (2007)

Bán, J, Bazan, A, Bellachia, F, Blondel, A, Böttcher, S, Clark, A, ...

The Liquid Argon calorimeters play a central role in the ATLAS (A Toroidal LHC Apparatus) experiment. The environment at the Large Hadron Collider (LHC) imposes strong constraints on the detectors...

ATLAS liquid argon calorimeter back end electronics (2007)

Bán, J., Bazan, A., Bellachia, F., Blondel, A., Böttcher, S., Clark, A., ...

The Liquid Argon calorimeters play a central role in the ATLAS (A Toroidal LHC Apparatus) experiment. The environment at the Large Hadron Collider (LHC) imposes strong constraints on the detectors...

ATLAS liquid argon calorimeter back end electronics (2007)

Bán, J., Bazan, A., Bellachia, F., Blondel, A., Böttcher, S., Clark, A., ...

The Liquid Argon calorimeters play a central role in the ATLAS (A Toroidal LHC Apparatus) experiment. The environment at the Large Hadron Collider (LHC) imposes strong constraints on the detectors...

ATLAS liquid argon calorimeter back end electronics (2007)

Bán, J., Bazan, A., Bellachia, F., Blondel, A., Böttcher, S., Clark, A., ...

The Liquid Argon calorimeters play a central role in the ATLAS (A Toroidal LHC Apparatus) experiment. The environment at the Large Hadron Collider (LHC) imposes strong constraints on the detectors...

Report by the ESA-ESO Working Group on Extra-Solar Planets (2005)

Perryman, M., Hainhaut, O., Dravins, D., Léger, A., Quirrenbach, A., Rauer, H., ...

Various techniques are being used to search for extra-solar planetary signatures, including accurate measurement of radial velocity and positional (astrometric) displacements, gravitational...

The Life of Stars and their Planets (2005)

Catala, C., Aerts, C., Aigrain, S., Antonello, E., Appourchaux, T., Auvergne, M., ...

We lack a reliable scenario for the formation and evollution of stars and their planetary systems, involving key factors such as magnetic fields and turbulence. We present the case for a mission...

Submitted to Icarus notes version 15 Jan. 04 (2004)

New Family Of, A. Léger, F. Selsis, C. Sotin, T. Guillot, D. Despois, ...

A new family of planets is considered which is in between the rocky terrestrial planets and the gaseous giants, "Ocean-Planets". We present the possible formation, composition and internal...

ADSORPTION OF C l6O AND Cl8O ON RHODIUM, OBSERVED BY INELASTIC ELECTRON TUNNELING SPECTROSCOPY (1978)

De Cheveigné, S., Klein, S., Léger, A.

Inelastic Electron Tunneling Spectroscopy brings new information on the problem of adsorption of CO on metals, essential to the understanding of catalytic mechanisms. Isotopic shifts allow...

ADSORPTION OF C l6O AND Cl8O ON RHODIUM, OBSERVED BY INELASTIC ELECTRON TUNNELING SPECTROSCOPY (1978)

De Cheveigné, S., Klein, S., Léger, A.

Inelastic Electron Tunneling Spectroscopy brings new information on the problem of adsorption of CO on metals, essential to the understanding of catalytic mechanisms. Isotopic shifts allow...

ADSORPTION OF C l6O AND Cl8O ON RHODIUM, OBSERVED BY INELASTIC ELECTRON TUNNELING SPECTROSCOPY (1978)

De Cheveigné, S., Klein, S., Léger, A.

Inelastic Electron Tunneling Spectroscopy brings new information on the problem of adsorption of CO on metals, essential to the understanding of catalytic mechanisms. Isotopic shifts allow...

Combined use of a lock-in detector and a multichannel analyser for 1/f noise application to tunneling spectroscopy (1976)

Léger, A., Delmas, B., Klein, J., De Cheveigne, S.

Obtaining a good signal-to-noise ratio (S/N) is of great importance in tunneling spectroscopy, as it has often led to the discovery of new phenomena. The quantities of interest are the derivatives of...

Second and third derivative of a tunnel junction characteristic application to the observation of electronic excitations (1976)

Klein, J., Léger, A., Delmas, B., De Cheveigne, S.

Tunneling spectroscopy at high bias has proved to be useful as a tool for studying electronic excitations in junctions although one major difficulty encountered is the huge background in the second...

Combined use of a lock-in detector and a multichannel analyser for 1/f noise application to tunneling spectroscopy (1976)

Léger, A., Delmas, B., Klein, J., De Cheveigne, S.

Obtaining a good signal-to-noise ratio (S/N) is of great importance in tunneling spectroscopy, as it has often led to the discovery of new phenomena. The quantities of interest are the derivatives of...

Second and third derivative of a tunnel junction characteristic application to the observation of electronic excitations (1976)

Klein, J., Léger, A., Delmas, B., De Cheveigne, S.

Tunneling spectroscopy at high bias has proved to be useful as a tool for studying electronic excitations in junctions although one major difficulty encountered is the huge background in the second...

Combined use of a lock-in detector and a multichannel analyser for 1/f noise application to tunneling spectroscopy (1976)

Léger, A., Delmas, B., Klein, J., De Cheveigne, S.

Obtaining a good signal-to-noise ratio (S/N) is of great importance in tunneling spectroscopy, as it has often led to the discovery of new phenomena. The quantities of interest are the derivatives of...

Second and third derivative of a tunnel junction characteristic application to the observation of electronic excitations (1976)

Klein, J., Léger, A., Delmas, B., De Cheveigne, S.

Tunneling spectroscopy at high bias has proved to be useful as a tool for studying electronic excitations in junctions although one major difficulty encountered is the huge background in the second...

Tunnelling investigation of the phonon spectrum of superconducting Be implications for an eventual enhancement of Tc (1975)

Léger, A., Klein, J., De Cheveigne, S., Belin, M., Defourneau, D.

Beryllium is an exciting superconductor in that the theoretical upper limit for its Tc is 140 K. We discuss here the possibility of increasing the critical temperature of the vapour quenched phase...

Tunnelling investigation of the phonon spectrum of superconducting Be implications for an eventual enhancement of Tc (1975)

Léger, A., Klein, J., De Cheveigne, S., Belin, M., Defourneau, D.

Beryllium is an exciting superconductor in that the theoretical upper limit for its Tc is 140 K. We discuss here the possibility of increasing the critical temperature of the vapour quenched phase...

Tunnelling investigation of the phonon spectrum of superconducting Be implications for an eventual enhancement of Tc (1975)

Léger, A., Klein, J., De Cheveigne, S., Belin, M., Defourneau, D.

Beryllium is an exciting superconductor in that the theoretical upper limit for its Tc is 140 K. We discuss here the possibility of increasing the critical temperature of the vapour quenched phase...

Émission de champ à partir d'un supraconducteur (1968)

Léger, A.

Nous calculons la variation de l'émission de champ d'un métal lorsqu'il passe de l'état normal à l'état supraconducteur. L'expression obtenue de la différence des courants présente une...

Émission de champ à partir d'un supraconducteur (1968)

Léger, A.

Nous calculons la variation de l'émission de champ d'un métal lorsqu'il passe de l'état normal à l'état supraconducteur. L'expression obtenue de la différence des courants présente une...

Émission de champ à partir d'un supraconducteur (1968)

Léger, A.

Nous calculons la variation de l'émission de champ d'un métal lorsqu'il passe de l'état normal à l'état supraconducteur. L'expression obtenue de la différence des courants présente une...