Planets, candidates, and binaries from the CoRoT/Exoplanet programme The CoRoT transit catalogue

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    M. Deleuil, Aix Marseille Univ, Aix-Marseille Universite, National Institute for Earth Sciences & Astronomy (INSU), Centre National de la Recherche Scientifique (CNRS), CNRS, CNES, LAM,UMR 7326, S. Aigrain, Tulane Univ, Tulane University, Dept Phys & Engn Phys, C. Moutou, Aix Marseille Univ, Aix-Marseille Universite, National Institute for Earth Sciences & Astronomy (INSU), Centre National de la Recherche Scientifique (CNRS), CNRS, CNES, LAM,UMR 7326, J. Cabrera, German Aerosp Ctr, German Aerospace Centre (DLR), Helmholtz Association, Inst Planetary Res, F. Bouchy, Univ Geneva, University of Geneva, Observ Geneve, H. J. Deeg, Univ La Laguna, Universidad de la Laguna, Dept Astrofis, J-M Almenara, Univ Geneva, University of Geneva, Observ Geneve, G. Hebrard, Univ Paris XI, Centre National de la Recherche Scientifique (CNRS), University of Paris Sud - Paris XI, Universite Paris Saclay (ComUE), Sorbonne Universites (ComUE), Pierre & Marie Curie University - Paris VI, CNRS, Inst Astrophys Spatiale, UMR 8617, A. Santerne, Aix Marseille Univ, Aix-Marseille Universite, National Institute for Earth Sciences & Astronomy (INSU), Centre National de la Recherche Scientifique (CNRS), CNRS, CNES, LAM,UMR 7326, R. Alonso, Univ La Laguna, Universidad de la Laguna, Dept Astrofis, A. S. Bonomo, INAF Osservatorio Astrofis Torino, P. Borde, Univ Bordeaux, Centre National de la Recherche Scientifique (CNRS), Communaute d'Universites et Etablissements d'Aquitaine (ComUE), Lab Astrophys Bordeaux, CNRS, Sz Csizmadia, German Aerosp Ctr, German Aerospace Centre (DLR), Helmholtz Association, Inst Planetary Res, R. F. Diaz, Univ Buenos Aires IEGEBA CONICET UBA, Dept Ecol Genet & Evoluc, Fac Ciencias Exactas & Nat, Univ Buenos Aires, Instituto de Astronomia y Fisica del Espacio (IAFE), University of Buenos Aires, Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), CONICET, IAFE, A. Erikson, German Aerosp Ctr, German Aerospace Centre (DLR), Helmholtz Association, Inst Planetary Res, M. Fridlund, Onsala Space Observ, Chalmers University of Technology, Chalmers Univ Technol, Dept Earth & Space Sci, D. Gandolfi, Heidelberg Univ, Ruprecht Karls University Heidelberg, Zentrum Astron, Landessternwarte Konigstuhl, E. Guenther, Thüringer Landessternwarte Tautenburg, T. Guillot, Observ Cote dAzur, Observatory Cote Azur, Lab Cassiopee, P. Guterman, Aix Marseille Univ, Aix-Marseille Universite, National Institute for Earth Sciences & Astronomy (INSU), Centre National de la Recherche Scientifique (CNRS), CNRS, CNES, LAM,UMR 7326, S. Grziwa, Univ Cologne, University of Cologne, Rhein Inst Umweltforsch, A. Hatzes, Thüringer Landessternwarte Tautenburg, A. Leger, CNRS, Centre National de la Recherche Scientifique (CNRS), National Institute for Earth Sciences & Astronomy (INSU), UMR 8617, T. Mazeh, Tel Aviv Univ, Tel Aviv University, Sch Phys & Astron, A. Ofir, Georg August Univ, Inst Astrophys, M. Ollivier, CNRS, Centre National de la Recherche Scientifique (CNRS), National Institute for Earth Sciences & Astronomy (INSU), UMR 8617, M. Patzold, Univ Cologne, University of Cologne, Rhein Inst Umweltforsch, H. Parviainen, Univ La Laguna, Universidad de la Laguna, Dept Astrofis, H. Rauer, TU Berlin, Technical University of Berlin, Zentrum Astron & Astrophys, D. Rouan, Univ Paris 07, Observatoire de Paris, University of Paris Diderot - Paris VII, Universite Sorbonne Paris Cite-USPC (COMUE), Pierre & Marie Curie University - Paris 6, PSL Research University Paris, UPMC, CNRS UMR 8109, LESIA,Observ Paris, J. Schneider, Univ Paris Diderot, University of Paris Diderot, PSL Research University Paris (ComUE), Universite Sorbonne Paris Cite-USPC (ComUE), Centre National de la Recherche Scientifique (CNRS), Observatoire de Paris, CNRS, Observ Paris, LUTH, R. Titz-Weider, German Aerosp Ctr, German Aerospace Centre (DLR), Helmholtz Association, Inst Planetary Res,
  • B. Tingley
  • J. Weingrill, Leibniz Inst Astrophys Potsdam AIP, Leibniz Institut fur Astrophysik Potsdam (AIP)

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.

Original languageEnglish
Article number97
JournalAstronomy & Astrophysics
Volume619
Number of pages25
ISSN1432-0746
DOIs
Publication statusPublished - 13 Nov 2018

    Research areas

  • binaries: eclipsing, techniques: photometric, space vehicles: instruments, methods: data analysis, SPACE MISSION, LIGHT CURVES, EXOPLANETS, PARAMETERS, SYSTEM

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