Removing Systematics from the CoRoT Light Curves: I. Magnitude-Dependent Zero Point

T. Mazeh, P. Guterman, S. Aigrain, S. Zucker, N. Grinberg

Research output: Working paper/PreprintPreprint

19 Scopus citations
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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.
Original languageEnglish
DOIs
StatePublished - 13 Jul 2009

Keywords

  • astro-ph.EP

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