Transiting exoplanets from the CoRoT space mission
2014 | journal article. A publication with affiliation to the University of Göttingen.
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Transiting exoplanets from the CoRoT space mission
Alonso, R.; Moutou, C.; Endl, M.; Almenara, J.-M.; Guenther, E. W.; Deleuil, M. & Hatzes, A. et al. (2014)
Astronomy and Astrophysics, 567 art. UNSP A112. DOI: https://doi.org/10.1051/0004-6361/201118662
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- Authors
- Alonso, Rosario; Moutou, C.; Endl, Michael; Almenara, J.-M; Guenther, E. W.; Deleuil, M.; Hatzes, Artie; Aigrain, S.; Auvergne, M.; Baglin, A.; Barge, P.; Bonomo, A. S.; Borde, P.; Bouchy, F.; Cavarroc, C.; Cabrera, J. A.; Carpano, S.; Csizmadia, Sz.; Cochran, William D.; Deeg, H. J.; Diaz, R. F.; Dvorak, R.; Erikson, A.; Ferraz-Mello, Sylvio; Fridlund, M.; Fruth, T.; Gandolfi, D.; Gillon, M.; Grziwa, S.; Guimaraes, Jose T. F.; Hebrard, G.; Jorda, Laurent; Leger, A.; Lammer, H.; Lovis, C.; MacQueen, P. J.; Mazeh, T.; Ofir, Aviv; Olivier, M.; Pasternacki, T.; Paetzold, W. M.; Queloz, D.; Rauer, H.; Rouan, D.; Santerne, A.; Schneider, J.; dos Santos, M. Tadeu; Tingley, B.; Titz-Weider, R.; Weingrill, J.; Wuchterl, G.
- Abstract
- We present the discovery of a candidate multiply transiting system, the first one found in the CoRoT mission. Two transit like features with periods of 5.11 and 11.76 d are detected in the CoRoT light curve around a main sequence K1V star of r = 15.1. If the features are due to transiting planets around the same star, these would correspond to objects of 3.7 +/- 0.4 and 5.0 +/- 0.5 R-circle plus, respectively. Several radial velocities serve to provide an upper limit of 5.7 M-circle plus for the 5.11 d signal and to tentatively measure a mass of 28(-11)(+11); M-circle plus for the object transiting with a 11.76 d period. These measurements imply low density objects, with a significant gaseous envelope. The detailed analysis of the photometric and spectroscopic data serves to estimate the probability that the observations are caused by transiting Neptune-sized planets as much as over 26 times higher than a blend scenario involving only one transiting planet and as much as over 900 times higher than a scenario involving two blends and no planets. The radial velocities show a long-term modulation that might be attributed to a 1.5 M-Jup planet orbiting at 1.8 AU from the host, but more data are required to determine the precise orbital parameters of this companion.
- Issue Date
- 2014
- Status
- published
- Publisher
- Edp Sciences S A
- Journal
- Astronomy and Astrophysics
- Project
- info:eu-repo/grantAgreement/EC/FP7/239953/EU//EXOEARTHS
- Organization
- Fakultät für Physik
- ISSN
- 1432-0746