A SYSTEMATIC SEARCH FOR TRANSITING PLANETS IN THE K2 DATA

Daniel Foreman-Mackey, Benjamin T. Montet, David W. Hogg, Timothy D. Morton, Dun Wang, Bernhard Schölkopf

    Research output: Contribution to journalArticle

    Abstract

    Photometry of stars from the K2 extension of NASA's Kepler mission is afflicted by systematic effects caused by small (few-pixel) drifts in the telescope pointing and other spacecraft issues. We present a method for searching K2 light curves for evidence of exoplanets by simultaneously fitting for these systematics and the transit signals of interest. This method is more computationally expensive than standard search algorithms but we demonstrate that it can be efficiently implemented and used to discover transit signals. We apply this method to the full Campaign 1 data set and report a list of 36 planet candidates transiting 31 stars, along with an analysis of the pipeline performance and detection efficiency based on artificial signal injections and recoveries. For all planet candidates, we present posterior distributions on the properties of each system based strictly on the transit observables.

    Original languageEnglish (US)
    Article number215
    JournalAstrophysical Journal
    Volume806
    Issue number2
    DOIs
    StatePublished - Jun 20 2015

    Keywords

    • catalogs
    • methods: data analysis
    • methods: statistical
    • planetary systems
    • stars: statistics

    ASJC Scopus subject areas

    • Astronomy and Astrophysics
    • Space and Planetary Science

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  • Cite this

    Foreman-Mackey, D., Montet, B. T., Hogg, D. W., Morton, T. D., Wang, D., & Schölkopf, B. (2015). A SYSTEMATIC SEARCH FOR TRANSITING PLANETS IN THE K2 DATA. Astrophysical Journal, 806(2), [215]. https://doi.org/10.1088/0004-637X/806/2/215