Bibcode
Almenara, J. M.; Deeg, H. J.; Aigrain, S.; Alonso, R.; Auvergne, M.; Baglin, A.; Barbieri, M.; Barge, P.; Bordé, P.; Bouchy, F.; Bruntt, H.; Cabrera, J.; Carone, L.; Carpano, S.; Catala, C.; Csizmadia, Sz.; de La Reza, R.; Deleuil, M.; Dvorak, R.; Erikson, A.; Fridlund, M.; Gandolfi, D.; Gillon, M.; Gondoin, P.; Guenther, E.; Guillot, T.; Hatzes, A.; Hébrard, G.; Jorda, L.; Lammer, H.; Léger, A.; Llebaria, A.; Loeillet, B.; Magain, P.; Mayor, M.; Mazeh, T.; Moutou, C.; Ollivier, M.; Pätzold, M.; Pont, F.; Queloz, D.; Rauer, H.; Régulo, C.; Renner, S.; Rouan, D.; Samuel, B.; Schneider, J.; Shporer, A.; Wuchterl, G.; Zucker, S.
Bibliographical reference
Astronomy and Astrophysics, Volume 506, Issue 1, 2009, pp.337-341
Advertised on:
10
2009
Journal
Citations
47
Refereed citations
41
Description
Context: The CoRoT satellite searches for planets by applying the
transit method, monitoring up to 12 000 stars in the galactic plane for
150 days in each observing run. This search is contaminated by a large
fraction of false positives, caused by different eclipsing binary
configurations that might be confused with a transiting planet. Aims: We evaluate the rates and nature of false positives in the CoRoT
exoplanets search and compare our results with semiempirical
predictions. Methods: We consider the detected binary and planet
candidates in the first three extended CoRoT runs, and classify the
results of the follow-up observations completed to verify their
planetary nature. We group the follow-up results into undiluted
binaries, diluted binaries, and planets and compare their abundances
with predictions from the literature. Results: 83% of the initial
detections are classified as false positives using only the CoRoT
light-curves, the remaining 17% require follow-up observations. Finally,
12% of the candidates in the follow-up program are planets. The shape of
the overall distribution of the false positive rate follows previous
predictions, except for candidates with transit depths below about 0.4%.
For candidates with transit depths in the range from 0.1-0.4%, CoRoT
detections are nearly complete, and this difference from predictions is
probably real and dominated by a lower than expected abundance of
diluted eclipsing binaries.
The CoRoT space mission, launched on December 27th 2006, has been
developed and is operated by CNES, with the contribution of Austria,
Belgium, Brazil , ESA (RSSD and Science Programme), Germany and Spain.
Related projects
Helio and Astero-Seismology and Exoplanets Search
The principal objectives of this project are: 1) to study the structure and dynamics of the solar interior, 2) to extend this study to other stars, 3) to search for extrasolar planets using photometric methods (primarily by transits of their host stars) and their characterization (using radial velocity information) and 4) the study of the planetary
Savita
Mathur