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Table A.1

Characteristics of the different methods.

Pipeline A2Za CANb CORc OCTd SYDe

Spectrum Lomb-Scargle periodogram  →  power density spectrum (PDS)
Frequency axis corrected for the duty cycle
Frequency sampling δν = 1/T, with T = tLC the total observation duration
νNyquist = 0.5/δtLC, with δtLC the Kepler long-cadence sampling
PDS normalization

νmax centroid Gaussian
or peak of the smoothed spectrum
Smoothing 1 − Δν Gaussian filter none 1 − Δν Gaussian filter

Background global global local local global
Harvey Harvey  ∝ ν − β second order polynomial Harvey modified
Value of exponent free 4 free 2 2 and 4
Number of components 2 3 1 1 2

References. (a)Mathur et al. (2010); (b)Kallinger et al. (2010); (c)Mosser & Appourchaux (2009); (d)Hekker et al. (2010); (e)Huber et al. (2009). For more information on the modelling of the background, see Mathur et al. (2011).

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