Published 2008
| Version v1
Journal article
Transiting exoplanets from the CoRoT space mission. I. CoRoT-Exo-1b: a low-density short-period planet around a G0V star
Creators
- Barge, Pierre
- Baglin, Annie
- Auvergne, Michel
- Rauer, Heike
- Léger, Alain
- Schneider, Jean
- Pont, Frédéric
- Aigrain, Suzanne
- Almenara, J. M.
- Alonso, Roi
- Barbieri, Mauro
- Bordé, P.
- Bouchy, François
- Deeg, Hans J.
- La Reza, De
- Deleuil, Magali
- Dvorak, Rudolf
- Erikson, Anders
- Fridlund, Malcolm C.
- Gillon, Michel
- Gondoin, Philippe
- Guillot, Tristan
- Hatzes, Artie P.
- Hébrard, Guillaume
- Jorda, Laurent
- Kabath, P.
- Lammer, Helmut
- Llebaria, Antoine
- Loeillet, B.
- Magain, Pierre
- Mazeh, Tsevi
- Moutou, Claire
- Ollivier, Marc
- Pätzold, M.
- Queloz, Didier
- Rouan, Daniel
- Shporer, A.
- Wuchterl, Günther
Contributors
Others:
- Laboratoire d'Astrophysique de Marseille (LAM) ; Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)
- Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA) ; Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris ; Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
- Pôle Astronomie du LESIA ; Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA) ; Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris ; Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris ; Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
- Institute of Planetary Research, Deutsches Zentrum für Luft- und Raumfahrt (DLR)
- Institut d'astrophysique spatiale (IAS) ; Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)
- Laboratoire Univers et Théories (LUTH (UMR_8102)) ; Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris ; Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
- Observatoire Astronomique de l'Université de Genève
- School of Physics, University of Exeter
- Instituto de Astrofísica de Canarias (IAC)
- Institut d'Astrophysique de Paris (IAP) ; Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)
- Observatório Nacional/MCTI
- Institut für Astronomie, Universität Wien (IfA)
- Research and Scientific Support Department, ESA-ESTEC (RSSD)
- Observatoire de la Côte d'Azur (OCA) ; Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
- Thüringer Landessternwarte, Tautenburg Observatory
- Institut für Weltraumforschung, Österreichische Akademie der Wissenschaften (IWF)
- University of Liège
- Tel Aviv University [Tel Aviv]
- Rheinisches Institut für Umweltforschung an der Universität zu Köln (RIU)
Description
Context: The pioneer space mission for photometric planet searches, CoRoT, steadily monitors about 12 000 stars in each of its fields of view. Transit candidates can be detected early in the processing of the data and before the end of a run of observation.
Aims: We report the detection of the first planet discovered by CoRoT and characterizing it with the help of follow-up observations.
Methods: Raw data were filtered from outliers and residuals at the orbital period of the satellite. The orbital parameters and the radius of the planet were estimated by best fitting the phase folded light curve with 34 successive transits. Doppler measurements with the SOPHIE spectrograph permitted us to secure the detection against binaries and to estimate the mass of the planet.
Results: The accuracy of the data is very high with a dispersion in the 2.17 min binned phase-folded light curve that does not exceed ~3.×10-4 in flux unit. The planet orbits a mildly metal-poor G0V star of magnitude V=13.6 in 1.5 days. The estimated mass and radius of the star are 0.95±0.15 M&sun; and 1.11±0.05 R&sun;. We find the planet has a radius of 1.49±0.08 R_Jup, a mass of 1.03±0.12 M_Jup, and a particularly low mean density of 0.38±0.05 g cm-3.
Aims: We report the detection of the first planet discovered by CoRoT and characterizing it with the help of follow-up observations.
Methods: Raw data were filtered from outliers and residuals at the orbital period of the satellite. The orbital parameters and the radius of the planet were estimated by best fitting the phase folded light curve with 34 successive transits. Doppler measurements with the SOPHIE spectrograph permitted us to secure the detection against binaries and to estimate the mass of the planet.
Results: The accuracy of the data is very high with a dispersion in the 2.17 min binned phase-folded light curve that does not exceed ~3.×10-4 in flux unit. The planet orbits a mildly metal-poor G0V star of magnitude V=13.6 in 1.5 days. The estimated mass and radius of the star are 0.95±0.15 M&sun; and 1.11±0.05 R&sun;. We find the planet has a radius of 1.49±0.08 R_Jup, a mass of 1.03±0.12 M_Jup, and a particularly low mean density of 0.38±0.05 g cm-3.
Abstract
International audienceAdditional details
Identifiers
- URL
- https://hal.archives-ouvertes.fr/hal-03742607
- URN
- urn:oai:HAL:hal-03742607v1