Kepler eclipsing binary stars - VI. Identification of eclipsing binaries in the K2 campaign 0 data set
The original Kepler mission observed and characterized over 2400 eclipsing binaries (EBs) in addition to its prolific exoplanet detections. Despite the mechanical malfunction and subsequent non-recovery of two reaction wheels used to stabilize the instrument, the Kepler satellite continues collecting data in its repurposed K2 mission surveying a series of fields along the ecliptic plane. Here, we present an analysis of the first full baseline K2 data release: the Campaign 0 data set. In the 7761 light curves we have identified a total of 207 EBs. Of these, 97 are new discoveries that were not previously identified. Our pixel-level analysis of these objects has also resulted in identification of several false positives (observed targets contaminated by neighbouring EBs), as well as the serendipitous discovery of two short-period exoplanet candidates. We provide catalogue cross-matched source identifications, orbital periods, morphologies and ephemerides for these eclipsing systems. We also describe the incorporation of the K2 sample into the Kepler Eclipsing Binary Catalog,§ present spectroscopic follow-up observations for a limited selection of nine systems and discuss prospects for upcoming K2 campaigns.
Publication Source (Journal or Book title)
Monthly Notices of the Royal Astronomical Society
LaCourse, D., Jek, K., Jacobs, T., Winarski, T., Boyajian, T., Rappaport, S., Sanchis-Ojeda, R., Conroy, K., Nelson, L., Barclay, T., Fischer, D., Schmitt, J., Wang, J., Stassun, K., Pepper, J., Coughlin, J., Shporer, A., & Prša, A. (2015). Kepler eclipsing binary stars - VI. Identification of eclipsing binaries in the K2 campaign 0 data set. Monthly Notices of the Royal Astronomical Society, 452 (4), 3561-3592. https://doi.org/10.1093/mnras/stv1475