methods: data analysis; techniques: photometric; planetary systems
Abstract :
[en] This paper presents an analysis that searched for systematic effects within the CoRoT exoplanet field light curves. The analysis identified a systematic effect that modified the zero point of most CoRoT exposures as a function of stellar magnitude. We could find this effect only after preparing a set of learning light curves that were relatively free of stellar and instrumental noise. Correcting for this effect, rejecting outliers that appear in almost every exposure, and applying SysRem, reduced the stellar RMS by about 20%, without attenuating transit signals. 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, Germany, and Spain. CoRoT data become publicly available one year after release to the Co-Is of the mission from the CoRoT archive: http://idoc-corot.ias.u-psud.fr/.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Mazeh, T.; Radcliffe Institute for Advanced Studies at Harvard, 8 Garden St., Cambridge, MA 02138, USA ; On Sabbatical leave from School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel
Guterman, P.; Le Laboratoire d'Astrophysique de Marseille, UMR 6110 CNRS, Technopôle de Marseille-à toile, 13388 Marseille Cedex 13, France
Aigrain, S.; School of Physics, University of Exeter, Physics Building, Stocker Road, Exeter, Ex4 4QL, UK
Zucker, S.; Geophysics and Planetary Sciences, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel
Grinberg, N.; School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel
Alapini, A.; School of Physics, University of Exeter, Physics Building, Stocker Road, Exeter, Ex4 4QL, UK
Alonso, R.; Le Laboratoire d'Astrophysique de Marseille, UMR 6110 CNRS, Technopôle de Marseille-à toile, 13388 Marseille Cedex 13, France
Auvergne, M.; LESIA, Observatoire de Paris, 92195 Meudon, France
Barbieri, M.; Le Laboratoire d'Astrophysique de Marseille, UMR 6110 CNRS, Technopôle de Marseille-à toile, 13388 Marseille Cedex 13, France
Barge, P.; Le Laboratoire d'Astrophysique de Marseille, UMR 6110 CNRS, Technopôle de Marseille-à toile, 13388 Marseille Cedex 13, France
Bordé, P.
Bouchy, F.; Observatoire de Haute-Provence, 04870 St Michel l'Observatoire, France
Deeg, H.; IAC, 38205 La Laguna, Spain
de La Reza, R.; ON/MCT, 20921-030, Rio de Janeiro, Brazil
Deleuil, M.; Le Laboratoire d'Astrophysique de Marseille, UMR 6110 CNRS, Technopôle de Marseille-à toile, 13388 Marseille Cedex 13, France
Dvorak, R.; IfA, University of Vienna, 1180 Vienna, Austria
Erikson, A.; Institute of Planetary Research, DLR, 12489 Berlin, Germany
Fridlund, M.; RSSD, ESA/ESTEC, 2200 Noordwijk, The Netherlands
Gondoin, P.; RSSD, ESA/ESTEC, 2200 Noordwijk, The Netherlands
Jorda, L.; Le Laboratoire d'Astrophysique de Marseille, UMR 6110 CNRS, Technopôle de Marseille-à toile, 13388 Marseille Cedex 13, France
Lammer, H.; IWF, Austrian Academy of Sciences, 8042 Graz, Austria
Léger, A.
Llebaria, A.; Le Laboratoire d'Astrophysique de Marseille, UMR 6110 CNRS, Technopôle de Marseille-à toile, 13388 Marseille Cedex 13, France
Magain, Pierre ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image
Moutou, C.; Le Laboratoire d'Astrophysique de Marseille, UMR 6110 CNRS, Technopôle de Marseille-à toile, 13388 Marseille Cedex 13, France
