Overview of the kepler science processing pipeline

Jon M. Jenkins, Douglas A. Caldwell, Hema Chandrasekaran, Joseph D. Twicken, Stephen T. Bryson, Elisa V. Quintana, Bruce D. Clarke, Jie Li, Christopher Allen, Peter Tenenbaum, Hayley Wu, Todd C. Klaus, Christopher K. Middour, Miles T. Cote, Sean McCauliff, Forrest R. Girouard, Jay P. Gunter, Bill Wohler, Jeneen Sommers, Jennifer R. HallAkm K. Uddin, Michael S. Wu, Paresh A. Bhavsar, Jeffrey Van Cleve, Davidl Pletcher, Jessie A. Dotson, Michael R. Haas, Ronald L. Gilliland, David G. Koch, Williamj Borucki

Research output: Contribution to journalArticle

358 Scopus citations

Abstract

The Kepler Mission Science Operations Center (SOC) performs several critical functions including managing the ∼156,000 target stars, associated target tables, science data compression tables and parameters, as well as processing the raw photometric data downlinked from the spacecraft each month. The raw data are first calibrated at the pixel level to correct for bias, smear induced by a shutterless readout, and other detector and electronic effects. A background sky flux is estimated from ∼4500 pixels on each of the 84 CCD readout channels, and simple aperture photometry is performed on an optimal aperture for each star. Ancillary engineering data and diagnostic information extracted from the science data are used to remove systematic errors in the flux time series that are correlated with these data prior to searching for signatures of transiting planets with a wavelet-based, adaptive matched filter. Stars with signatures exceeding 7.1σ are subjected to a suite of statistical tests including an examination of each star's centroid motion to reject false positives caused by background eclipsing binaries. Physical parameters for each planetary candidate are fitted to the transit signature, and signatures of additional transiting planets are sought in the residual light curve. The pipeline is operational, finding planetary signatures and providing robust eliminations of false positives.

Original languageEnglish (US)
Pages (from-to)L87-L91
JournalAstrophysical Journal Letters
Volume713
Issue number2 PART 2
DOIs
StatePublished - Jan 1 2010

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    Jenkins, J. M., Caldwell, D. A., Chandrasekaran, H., Twicken, J. D., Bryson, S. T., Quintana, E. V., Clarke, B. D., Li, J., Allen, C., Tenenbaum, P., Wu, H., Klaus, T. C., Middour, C. K., Cote, M. T., McCauliff, S., Girouard, F. R., Gunter, J. P., Wohler, B., Sommers, J., ... Borucki, W. (2010). Overview of the kepler science processing pipeline. Astrophysical Journal Letters, 713(2 PART 2), L87-L91. https://doi.org/10.1088/2041-8205/713/2/L87