Planets, candidates, and binaries from the CoRoT/Exoplanet programme
BOUCHY, François
Laboratoire d'Astrophysique de Marseille [LAM]
Observatoire Astronomique de l'Université de Genève [ObsGE]
Laboratoire d'Astrophysique de Marseille [LAM]
Observatoire Astronomique de l'Université de Genève [ObsGE]
DEEG, Hans-Jörg
Instituto de Astrofisica de Canarias [IAC]
Universidad de La Laguna [Tenerife - SP] [ULL]
Instituto de Astrofisica de Canarias [IAC]
Universidad de La Laguna [Tenerife - SP] [ULL]
ALMENARA, J. M.
Laboratoire d'Astrophysique de Marseille [LAM]
Observatoire Astronomique de l'Université de Genève [ObsGE]
Laboratoire d'Astrophysique de Marseille [LAM]
Observatoire Astronomique de l'Université de Genève [ObsGE]
DIAZ, Rodrigo
Facultad de Ciencias Exactas y Naturales [Buenos Aires] [FCEyN]
Consejo Nacional de Investigaciones Científicas y Técnicas [Buenos Aires] [CONICET]
Instituto de Astronomía y Física del Espacio [Buenos Aires] [IAFE]
Facultad de Ciencias Exactas y Naturales [Buenos Aires] [FCEyN]
Consejo Nacional de Investigaciones Científicas y Técnicas [Buenos Aires] [CONICET]
Instituto de Astronomía y Física del Espacio [Buenos Aires] [IAFE]
GANDOLFI, Davide
Università degli studi di Torino = University of Turin [UNITO]
Zentrum für Astronomie der Universität Heidelberg [ZAH]
Università degli studi di Torino = University of Turin [UNITO]
Zentrum für Astronomie der Universität Heidelberg [ZAH]
GUILLOT, Tristan
Laboratoire de Cosmologie, Astrophysique Stellaire & Solaire, de Planétologie et de Mécanique des Fluides [CASSIOPEE]
Laboratoire de Cosmologie, Astrophysique Stellaire & Solaire, de Planétologie et de Mécanique des Fluides [CASSIOPEE]
PARVIAINEN, Hannu
Instituto de Astrofisica de Canarias [IAC]
Universidad de La Laguna [Tenerife - SP] [ULL]
Instituto de Astrofisica de Canarias [IAC]
Universidad de La Laguna [Tenerife - SP] [ULL]
RAUER, Heike
DLR Institute of Planetary Research
Zentrum für Astronomie und Astrophysik [Berlin] [ZAA]
DLR Institute of Planetary Research
Zentrum für Astronomie und Astrophysik [Berlin] [ZAA]
ROUAN, Daniel
Laboratoire d'études spatiales et d'instrumentation en astrophysique [LESIA (UMR_8109)]
Laboratoire d'études spatiales et d'instrumentation en astrophysique [LESIA (UMR_8109)]
WEINGRILL, Jörg
Space Research Institute of Austrian Academy of Sciences [IWF]
Leibniz-Institut für Astrophysik Potsdam [AIP]
< Réduire
Space Research Institute of Austrian Academy of Sciences [IWF]
Leibniz-Institut für Astrophysik Potsdam [AIP]
Langue
en
Article de revue
Ce document a été publié dans
Astronomy and Astrophysics - A&A. 2018, vol. 619, p. A97
EDP Sciences
Résumé en anglais
The CoRoT space mission observed 163 665 stars over 26 stellar fields in the faint star channel. The exoplanet teams detected a total of 4123 transit-like features in the 177 454 light curves. We present the complete ...Lire la suite >
The CoRoT space mission observed 163 665 stars over 26 stellar fields in the faint star channel. The exoplanet teams detected a total of 4123 transit-like features in the 177 454 light curves. We present the complete re-analysis of all these detections carried out with the same softwares so that to ensure their homogeneous analysis. Although the vetting process involves some human evaluation, it also involves a simple binary flag system over basic tests: detection significance, presence of a secondary, difference between odd and even depths, colour dependence, V-shape transit, and duration of the transit. We also gathered the information from the large accompanying ground-based programme carried out on the planet candidates and checked how useful the flag system could have been at the vetting stage of the candidates. From the initial list of transit-like features, we identified and separated 824 false alarms of various kind, 2269 eclipsing binaries among which 616 are contact binaries and 1653 are detached ones, 37 planets and brown dwarfs, and 557 planet candidates. We provide the catalogue of all these transit-like features, including false alarms. For the planet candidates, the catalogue gives not only their transit parameters but also the products of their light curve modelling: reduced radius, reduced semi-major axis, and impact parameter, together with a summary of the outcome of follow-up observations when carried out and their current status. For the detached eclipsing binaries, the catalogue provides, in addition to their transit parameters, a simple visual classification. Among the planet candidates whose nature remains unresolved, we estimate that eight (within an error of three) planets are still to be identified. After correcting for geometric and sensitivity biases, we derived planet and brown dwarf occurrences and confirm disagreements with Kepler estimates, as previously reported by other authors from the analysis of the first runs: small-size planets with orbital period less than ten days are underabundant by a factor of three in the CoRoT fields whereas giant planets are overabundant by a factor of two. These preliminary results would however deserve further investigations using the recently released CoRoT light curves that are corrected of the various instrumental effects and a homogeneous analysis of the stellar populations observed by the two missions.< Réduire
Mots clés en anglais
binaries: eclipsing
techniques: photometric
space vehicles: instruments
methods: data analysis
Origine
Importé de halUnités de recherche