Poretti, E., Mantegazza, L., Rainer, M., Uytterhoeven, K., Michel, E., Baglin, A., ...
It has been suggested that the detection of a wealth of very low amplitude modes in Delta Sct stars was only a matter of signal--to--noise ratio. Access to this treasure, impossible from the ground,...
HD 174884: a strongly eccentric, short-period early-type binary system discovered by CoRoT (2009)
Maceroni, C., Montalban, J., Michel, E., Harmanec, P., Prsa, A., Briquet, M., ...
Accurate photometric CoRoT space observations of a secondary seismological target, HD 174884, led to the discovery that this star is an astrophysically important double-lined eclipsing spectroscopic...
A fresh look at the seismic spectrum of HD49933: analysis of 180 days of CoRoT photometry (2009)
Benomar, O., Baudin, F., Campante, T. L., Chaplin, W. J., García, R. A., Gaulme, P., ...
Solar-like oscillations have now been observed in several stars, thanks to ground-based spectroscopic observations and space-borne photometry. CoRoT, which has been in orbit since December 2006, has...
HD 51106 and HD 50747: an ellipsoidal binary and a triple system observed with CoRoT (2009)
Dolez, N., Vauclair, S., Michel, E., Hua, A. Hui Bon, Vauclair, G., Contel, D. Le, ...
We present an analysis of the observations of HD 51106 and HD 50747 by the satellite CoRoT, obtained during its initial run, and of the spectroscopic preparatory observations. AIMS: We complete an...
Pulsations in the late-type Be star HD 50209 detected by CoRoT (2009)
Diago, P. D., Gutierrez-Soto, J., Auvergne, M., Fabregat, J., Floquet, M., ...
The presence of pulsations in late-type Be stars is still a matter of controversy. It constitutes an important issue to establish the relationship between non-radial pulsations and the mass-loss...
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....
Asteroseismic analysis of the CoRoT \delta-Scuti star HD174936 (2009)
Hernández, A. García, Moya, A., Michel, E., Garrido, R., Suárez, J. C., Rodríguez, E., ...
We present an analysis of the \delta-Scuti star object HD 174936 (ID 7613) observed by CoRoT during the first short run SRc01 (27 days). A total number of 422 frequencies we are extracted from the...
The CoRoT target HD175726: an active star with weak solar-like oscillations (2009)
Mosser, B., Michel, E., Appourchaux, T., Barban, C., Baudin, F., Boumier, P., ...
Context. The CoRoT short runs give us the opportunity to observe a large variety of late-type stars through their solar-like oscillations. We report observations of the star HD175726 that lasted for...
Short-lived spots in solar-like stars as observed by CoRoT (2009)
Mosser, B., Baudin, F., Lanza, A. F., Hulot, J. C., Catala, C., Baglin, A., ...
Context. CoRoT light curves have an unprecedented photometric quality, having simultaneously a high signal-to-noise ratio, a long time span and a nearly continuous duty-cycle. Aims. We analyse the...
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...
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...
Solar-like oscillations with low amplitude in the CoRoT target HD 181906 (2009)
Garcia, R. A., Regulo, C., Samadi, R., Ballot, J., Barban, C., Benomar, O., ...
Context: The F8 star HD 181906 (effective temperature ~6300K) was observed for 156 days by the CoRoT satellite during the first long run in the centre direction. Analysis of the data reveals a...
Degroote, P., Briquet, M., Catala, C., Uytterhoeven, K., Lefever, K., Morel, T., ...
We present the CoRoT light curve of the Beta Cep star HD 180642, assembled during the first long run of the space mission, as well as archival single-band photometry. Our goal is to analyse the...
Solar-like oscillations in a massive star (2009)
Belkacem, K., Samadi, R., Lefevre, L., Baudin, F., Deheuvels, S., ...
Seismology of stars provides insight into the physical mechanisms taking place in their interior, with modes of oscillation probing different layers. Low-amplitude acoustic oscillations excited by...
HD 50844: the new look of Delta Sct stars from CoRoT space photometry (2009)
Poretti, E., Michel, E., Garrido, R., Lefevre, L., Mantegazza, L., Rainer, M., ...
It has also been suggested that the detection of a wealth of very low amplitude modes in Delta Sct stars was only a matter of signal--to--noise ratio. Access to this treasure, impossible from the...
Looking for pulsations in HgMn stars through CoRoT lightcurves (2009)
Alecian, G., Gebran, M., Auvergne, M., Richard, O., Samadi, R., Weiss, W. W., ...
HgMn Chemically Peculiar stars are among the quietest stars of the main-sequence. However, according to theoretical predictions, these stars could have pulsations related to the very strong...
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...
The CoRoT satellite in flight : description and performance (2009)
Auvergne, M., Bodin, P., Boisnard, L., Chaintreuil, S., Team, CoRoT
CoRoT is a space telescope dedicated to stellar seismology and the search for extrasolar planets. The mission is led by CNES in association with French laboratories and has a large international...
Noise properties of the CoRoT data. A planet-finding perspective (2009)
Aigrain, S, Pont, F, Fressin, F, Alapini, A, Alonso, R, Auvergne, M, ...
CoRoT measures solar-like oscillations and granulation in stars hotter than the Sun (2008)
Michel, E., Baglin, A., Auvergne, M., Catala, C., Samadi, R.
Oscillations of the Sun have been used to understand its interior structure. The extension of similar studies to more distant stars has raised many difficulties despite the strong efforts of the...
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...
The seismology programme of CoRoT (2008)
Michel, E., Baglin, A., Auvergne, M., Catala, C.
We introduce the main lines and specificities of the CoRoT Seismology Core Programme. The development and consolidation of this programme has been made in the framework of the CoRoT Seismology...
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...
Intrinsic photometric characterisation of stellar oscillations and granulation (2008)
Michel, E., Samadi, R., Baudin, F., Barban, C., Appourchaux, T., Auvergne, M.
Measuring amplitudes of solar-like oscillations and the granulation power spectral density constitute two promising sources of information to improve our understanding and description of the...
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...
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...
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, ...
CoRoT sounds the stars: p-mode parameters of Sun-like oscillations on HD 49933 (2008)
Appourchaux, T., Michel, E., Auvergne, M., Baglin, A., Toutain, T., Baudin, F., ...
Deleuil, M, Deeg, H, Alonso, R, Bouchy, F, Rouan, D, Auvergne, M, ...
Lapeyrere, V, Auvergne, M, Drummond, Rachel; U0041966, Vandenbussche, Bart; U0006223, Aerts, C, ...
We demonstrate the effectiveness and robustness of photometric correction algorithms for satellite pointing jitter in the upcoming space mission COROT, which will study asteroseismology and search...
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...
Correction for small satellite motion on the COROT asteroseismology channel (2006)
Drummond, Rachel; U0041966, Fialho, FD, Vandenbussche, Bart; U0006223, Auvergne, M, Aerts, C
The COROT (Convection, ROtation and planetary Transit) satellite will be launched in summer 2006 into a 896 km polar orbit to observe stellar fields for up to 6 months in two channels: exoplanet and...
Jitter correction algorithms for the COROT satellite mission (2006)
Drummond, Rachel; U0041966, Vandenbussche, Bart; U0006223, Aerts, C, Fialho, FD, Auvergne, M
The COROT satellite contains a highly accurate stellar photometer with two channels that are respectively optimized for asteroseismology and terrestrial planet finding. The asteroseismology channel...
CoRoT: a first space mission to find terrestrial planets (2005)
Barge, P., Auvergne, M., Catala, C., Michel, E., Weiss, W. W., ...
CoRoT is a space mission devoted to broadband star photometry in visible light during long observing runs. Developed by CNES with a wide european cooperation, it will be launched in 2006 with two...
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
THE LOWER PART OF THE INSTABILITY STRIP: EVOLUTIONARY STATUS OF DELTA SCUTI STARS Y.Y. Liu
Baglin Auvergne, Y. Y. Liu, A. Baglin, M. Auvergne, E. Michel
The accurate determination of distances from Hipparcos allows to compare the position in the HR diagram of constant, known variable and chemically peculiar stars in the lower part of the instability...