Removing systematics from the CoRoT light curves. I. Magnitude-dependent zero point

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Removing systematics from the CoRoT light curves. I. Magnitude-dependent zero point

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Title: Removing systematics from the CoRoT light curves. I. Magnitude-dependent zero point
Author: Mazeh, T.
Guterman, P.
Aigrain, Suzanne
Zucker, S.
Grinberg, N.
Alapini, Aude
Alonso, R.
Auvergne, M.
Barbieri, M.
Barge, P.
Bordé, P.
Bouchy, F.
Deeg, H. J.
De la Reza, R.
Deleuil, M.
Dvorak, R.
Erikson, A.
Fridlund, M.
Gondoin, P.
Jorda, L.
Lammer, H.
Léger, A.
Llebaria, A.
Magain, P.
Moutou, C.
Ollivier, M.
Pätzold, M.
Pont, F.
Queloz, D.
Rauer, H.
Rouan, D.
Sabo, R.
Schneider, J.
Wuchterl, G.
Citation: 506 (1), pp. 431-434
Publisher: EDP Sciences
Journal: Astronomy and Astrophysics
Date Issued: 2009
URI: http://hdl.handle.net/10036/86961
DOI: 10.1051/0004-6361/200912037
Links: http://dx.doi.org/10.1051/0004-6361/200912037
Abstract: 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.
Type: Article
Description: Copyright © The European Southern Observatory (ESO)
Keywords: data analysis methodsphotometric techniquesplanetary systems
ISSN: 0004-63611432-0746


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