Transit timing analysis of CoRoT-1b (2009)
Csizmadia, Sz., Renner, S., Barge, P., Agol, E., Aigrain, S., Alonso, R., ...
CoRoT, the pioneer space-based transit search, steadily provides thousands of high-precision light curves with continuous time sampling over periods of up to 5 months. The transits of a planet...
Rauer, H., Queloz, D., Csizmadia, Sz., Deleuil, M., Alonso, R., Aigrain, S., ...
Aims. The CoRoT space mission continues to photometrically monitor about 12 000 stars in its field-of-view for a series of target fields to search for transiting extrasolar planets ever since 2007....
The spin-orbit angle of the transiting hot jupiter CoRoT-1b (2009)
Pont, F., Endl, M., Cochran, W. D., Barnes, S. I., Sneden, C., MacQueen, P. J., ...
We measure the angle between the planetary orbit and the stellar rotation axis in the transiting planetary system CoRoT-1, with new HIRES/Keck and FORS/VLT high-accuracy photometry. The data indicate...
Leger, A., Rouan, D., Schneider, J., Barge, P., Fridlund, M., Samuel, B., ...
We report the discovery of very shallow (DF/F = 3.4 10-4), periodic dips in the light curve of an active V = 11.7 G9V star observed by the CoRoT satellite, which we interpret as due to the presence...
Leger, A, Rouan, D, Schneider, J, Barge, P, Fridlund, M, Samuel, B, ...
We report the discovery of very shallow (DF/F = 3.4 10-4), periodic dips in the light curve of an active V = 11.7 G9V star observed by the CoRoT satellite, which we interpret as due to the presence...
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...
Accuracy of stellar parameters of exoplanet-host stars determined from asteroseismology (2009)
Mulet-Marquis, C., Baraffe, I., Aigrain, S., Pont, F.
In the context of the space-based mission CoRoT, devoted to asteroseismology and search for planet transits, we analyse the accuracy of fundamental stellar parameters (mass, radius, luminosity) that...
Removing systematics from the CoRoT light curves: I. Magnitude-Dependent Zero Point (2009)
Mazeh, T., Guterman, P., Aigrain, S., Zucker, S., Grinberg, N.
This paper presents an analysis that searched for systematic effects within the CoRoT exoplanet field light curves. The analysis identified a systematic effect that modified the zero point of most...
The secondary eclipse of CoRoT-1b (2009)
Alonso, R., Alapini, A., Aigrain, S., Auvergne, M., Baglin, A., Barbieri, M., ...
The transiting planet CoRoT-1b is thought to belong to the pM-class of planets, in which the thermal emission dominates in the optical wavelengths. We present a detection of its secondary eclipse in...
Spin-orbit misalignment in the HD80606 planetary system (2009)
Pont, F., Hebrard, G., Irwin, J. M., Bouchy, F., Moutou, C., Ehrenreich, D., ...
We recently reported the photometric and spectroscopic detection of the primary transit of the 111-day-period, eccentric extra-solar planet HD80606 b, at Observatoire de Haute-Provence, France...
The secondary eclipse of the transiting exoplanet CoRoT-2b (2009)
Alonso, R., Guillot, T., Mazeh, T., Aigrain, S., Alapini, A., Barge, P., ...
We present a study of the light curve of the transiting exoplanet CoRoT-2b, aimed at detecting the secondary eclipse and measuring its depth. The data were obtained with the CoRoT satellite during...
The detrending algorithms which are widely used to reduce the impact of stellar variability on space-based transit surveys are ill-suited for estimating the parameters of confirmed planets, as they...
Noise properties of the CoRoT data: a planet-finding perspective (2009)
Aigrain, S., Pont, F., Fressin, F., Alapini, A., Alonso, R., Auvergne, M., ...
In this short paper, we study the photometric precision of stellar light curves obtained by the CoRoT satellite in its planet finding channel, with a particular emphasis on the timescales...
Photospheric activity and rotation of the planet-hosting star CoRoT-Exo-4a (2009)
Lanza, A. F., Aigrain, S., Messina, S., Leto, G., Pagano, I., Auvergne, M., ...
The space experiment CoRoT has recently detected a transiting hot Jupiter in orbit around a moderately active F-type main-sequence star (CoRoT-Exo-4a). This planetary system is of particular interest...
Noise properties of the CoRoT data. A planet-finding perspective (2009)
Aigrain, S, Pont, F, Fressin, F, Alapini, A, Alonso, R, Auvergne, M, ...
Deeg, H J, Gillon, Michaël, Shporer, A, Rouan, D, Stecklum, B, Aigrain, S, ...
The motivation, techniques and performance of the ground-based photometric follow-up of transit detections by the CoRoT space mission are presented. Its principal raison d’être arises from the...
Bonomo, A. S., Aigrain, S., Bordé, P., Lanza, A. F.
We present a comparison of four methods of filtering solar-like variability to increase the efficiency of detection of Earth-like planetary transits by means of box-shaped transit finder algorithms....
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...
Lanza, A. F., Pagano, I., Leto, G., Messina, S., Aigrain, S., Alonso, R., ...
The space experiment CoRoT has recently detected transits by a hot Jupiter across the disc of an active G7V star (CoRoT-Exo-2a) that can be considered as a good proxy for the Sun at an age of...
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...
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...
Searching for the secondary eclipse of CoRoT-Exo-2b and its transit timing variations (2008)
Alonso, R., Aigrain, S., Pont, F., Mazeh, T.
With more than 80 transits observed in the CoRoT light curve with a cadence of 32 s, CoRoT-Exo-2b provides an excellent case to search for the secondary eclipse of the planet, with an expected signal...
Aigrain, S., Cameron, A. Collier, 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...
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...
WASP-3b: a strongly irradiated transiting gas-giant planet (2008)
Pollacco, D., Skillen, I., Collier Cameron, A., Loeillet, B., Stempels, H. C., Bouchy, F., ...
We report the discovery of WASP-3b, the third transiting exoplanet to be discovered by the WASP and SOPHIE collaboration. WASP-3b transits its host star USNO-B1.0 1256−0285133 every 1.846 834 ±...
Barge, P., Baglin, A., Auvergne, M., Rauer, H., Leger, A., Schneider, J., ...
Context. The pioneer space mission for photometric planet searches, CoRoT, steadily monitors about 12,000 stars in each of its fields of view; it is able to detect transit candidates early in the...
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...
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...
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...
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...
Moutou, C, Bruntt, H, Guillot, T, Shporer, A, Günther, E, Aigrain, S, ...
Technical development status of A STEP 400 (2008)
Daban, J, Gouvret, C, Agabi, A, Guillot, T, Fressin, F, Abe, L, ...
Deleuil, M, Deeg, H, Alonso, R, Bouchy, F, Rouan, D, Auvergne, M, ...
WASP-3b: a strongly-irradiated transiting gas-giant planet (2007)
Pollacco, D., Skillen, I., Cameron, A. Collier, Loeillet, B., Stempels, H. C., Bouchy, F., ...
We report the discovery of WASP-3b, the third transiting exoplanet to be discovered by the WASP and SOPHIE collaboration. WASP-3b transits its host star USNO-B1.0 1256-0285133 every...
Starting the first transit survey from space with the CoRoT satellite (2007)
Barge, P., Alonso, R., Deleuil, M., Moutou, C., Deeg, H., Erikson, Anders, ...
Efficient identification of exoplanetary transit candidates from SuperWASP light curves (2007)
Cameron, A. Collier, Wilson, D. M., West, R. G., Hebb, L., Aigrain, S., ...
Transiting extrasolar planets constitute only a small fraction of the range of stellar systems found to display periodic, shallow dimmings in wide-field surveys employing small-aperture camera...
WASP-1b and WASP-2b: two new transiting exoplanets detected with SuperWASP and SOPHIE (2007)
Cameron, A Collier, Bouchy, F, Hébrard, G, Maxted, P, Pollacco, D, Pont, F, ...
We have detected low-amplitude radial-velocity variations in two stars, USNO-B1.0 1219-0005465 (GSC 02265-00107 = WASP-1) and USNO-B1.0 0964-0543604 (GSC 00522-01199 = WASP-2). Both stars were...
WASP-1b and WASP-2b: two new transiting exoplanets detected with SuperWASP and SOPHIE (2007)
Collier Cameron, A., Bouchy, F., Hebrard, G., Maxted, P., Pollacco, D., Pont, F., ...
We have detected low-amplitude radial-velocity variations in two stars, USNO-B1.0 1219-0005465 (GSC 02265-00107 = WASP-1 ) and USNO-B1.0 0964-0543604 (GSC 00522-01199 = WASP-2 ). Both stars were...
The CoRoT exoplanet programme: exploring the gas-giant/terrestrial planet transition (2007)
Aigrain, S., Barge, P., Deleuil, M., Fressin, F., Moutou, C., Queloz, D., ...
CoRoT, which was launched successfully on the 27th of December 2006, is the first space mission to have the search for planetary transits at the heart of its science programme. It is expected to be...
Potential of Photometric Searchs for Transiting Planets (2007)
Pont, F., Aigrain, S., Bakos, G., Brown, T., Cameron, A. C., Deeg, H., ...
A STEP: Towards a Large Photometric Survey for Exoplanets at Dome C (2007)
Fressin, F., Guillot, T., Agabi, A., Moutou, C., Aigrain, S., ...
We present "A STEP" (Antarctica Search for Transiting Extrasolar Planets), a project dedicated to the search for planetary transits from Antartica. The project consists of a semi-automatic ~40 cm...
WASP-1b and WASP-2b: Two new transiting exoplanets detected with SuperWASP and SOPHIE (2006)
Cameron, A. Collier, Bouchy, F., Hebrard, G., Maxted, P., Pollacco, D., Pont, F., ...
We have detected low-amplitude radial-velocity variations in two stars, USNO-B1.0 1219-0005465 (GSC 02265-00107 = WASP-1) and USNO-B1.0 0964-0543604 (GSC 00522-01199 = WASP-2). Both stars were...
Scientific Performances for the Exoplanet Channel (2006)
Barge, P., Moutou, C., Léger, A., Bordé, D., Rouan, D., Pont, F., ...
Moutou, C., Pont, F.(Observatoire De Genève, Sauverny, Switzerland), Barge, P., Aigrain, S., Auvergne, M., Blouin, D., ...
Because photometric surveys of exoplanet transits are very promising sources of future discoveries, many algorithms are being developed to detect transit signals in stellar light curves. This paper...
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...
algorithms on realistic synthetic light curves (2005)
C. Moutou, F. Pont, P. Barge, S. Aigrain, M. Auvergne, D. Blouin, ...
Comparative blind test of five planetary transit detection
Practical Planet Prospecting (2004)
(Abridged) Space missions to search for exo-planets via the transit method, such as COROT, Eddington and Kepler, will need to address problems associated with the automated and efficient detection of...
Characterising stellar micro-variability for planetary transit searches (2003)
Aigrain, S., Favata, F., Gilmore, G.
(abridged) A method for simulating light curves containing stellar micro-variability for a range of spectral types and ages, based on parameter-by-parameter scaling of a multi-component fit to the...
Katz, D., Favata, F., Aigrain, S., Micela, G.
The high-resolution optical spectra of the two X-ray active binaries RS CVn stars HD 113816 (IS Vir) and HD 119285 (V851 Cen) are analysed and their Na, Mg, Al, Si, Ca, Sc, Ti, Co and Ni contents...
A modified version of the Gregory-Loredo method for Bayesian periodic signal detection (2002)
The detection of planetary transits in stellar photometric light-curves is poised to become the main method for finding substantial numbers of terrestrial planets. The French-European mission COROT...
Aigrain, S., Gilmore, G., Favata, F., Carpano, S.
Stellar micro-variability poses a serious threat to the capacities of space-based planet-finding missions such as Kepler or Eddington. The solar lightcurves obtained by the VIRGO PMO6 and SPM...