Reference : Removing systematics from the CoRoT light curves. I. Magnitude-dependent zero point
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/25511
Removing systematics from the CoRoT light curves. I. Magnitude-dependent zero point
English
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 mailto [Université de Liège - ULg > 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]
Ollivier, M. [IAS, Université Paris XI, 91405 Orsay, France]
Pätzold, M. [ > > ]
Pont, F. [School of Physics, University of Exeter, Physics Building, Stocker Road, Exeter, Ex4 4QL, UK]
Queloz, D. [Observatoire de Genève, 1290 Sauverny, Switzerland]
Rauer, H. [Institute of Planetary Research, DLR, 12489 Berlin, Germany ; LUTH, Observatoire de Paris, 92195 Meudon, France]
Rouan, D. [LESIA, Observatoire de Paris, 92195 Meudon, France]
Sabo, R. [School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel]
Schneider, J. [ZAA, TU Berlin, 10623 Berlin, Germany]
Wuchterl, G. [LUTH, Observatoire de Paris, 92195 Meudon, France]
1-Oct-2009
Astronomy and Astrophysics
EDP Sciences
506
431-434
Yes (verified by ORBi)
International
0004-6361
1432-0746
Les Ulis
France
[en] methods: data analysis ; techniques: photometric ; planetary systems
[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/.
http://hdl.handle.net/2268/25511
10.1051/0004-6361/200912037
http://adsabs.harvard.edu/abs/2009A%26A...506..431M
The authors thank EDP Sciences for their deposit authorization.
http://de.arxiv.org/abs/0907.2237

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