ניר גרינברג

אקדמי בכיר

Removing systematics from the CoRoT light curves

I. Magnitude-dependent zero point

T. Mazeh, P. Guterman, S. Aigrain, S. Zucker, N. Grinberg, A. Alapini, R. Alonso, M. Auvergne, M. Barbieri, P. Barge, P. Bordé, F. Bouchy, H. Deeg, R. De La Reza, M. Deleuil, R. Dvorak, A. Erikson, M. Fridlund, P. Gondoin, L. Jorda, H. Lammer, A. Léger, A. Llebaria, P. Magain, C. Moutou, M. Ollivier, M. Pätzold, F. Pont, D. Queloz, H. Rauer, D. Rouan, R. Sabo, J. Schneider, G. Wuchterl

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.

שפת פרסום אנגלית
דפים 431-434
כתב עת Astronomy and Astrophysics
כרך 506
נושא מספר 1
סטטוס פרסום פורסם - 01.01.2009

Keywords

Methods: data analysis
Planetary systems
Techniques: photometric

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science
גישה למסמך
10.1051/0004-6361/200912037
קבצים וקישורים אחרים
Link to publication in Scopus