Initial Characteristics of Kepler Short Cadence Data

作者: J. D. Twicken , T. Klaus , Ronald L. Gilliland , J. L. Dotson , D. A. Caldwell

DOI: 10.1088/2041-8205/713/2/L160

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摘要: The Kepler Mission offers two options for observations -- either Long Cadence (LC) used the bulk of core mission science, or Short (SC) which is applications such as asteroseismology solar-like stars and transit timing measurements exoplanets where 1-minute sampling critical. We discuss characteristics SC data obtained in 33.5-day long Quarter 1 (Q1) with completed on 15 June 2009. truly excellent time series precisions are nearly Poisson limited at 11th magnitude providing per-point measurement errors 200 parts-per-million per minute. For extremely saturated near 7th 40 ppm reached, while background 17th 7 mmag maintained. note presence additive artifacts, one that generates regularly spaced peaks frequency, involves offsets domain inversely proportional to stellar brightness. difference between LC illustrated TrES-2.

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