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Planetary Candidates Observed by Kepler. VIII. A Fully Automated Catalog With Measured Completeness and Reliability Based on Data Release 25
Susan E. Thompson, Jeffrey L. Coughlin, Kelsey Hoffman, Fergal Mullally, Jessie L. Christiansen, Christopher J. Burke, Steve Bryson, Natalie Batalha, Michael R. Haas, Joseph Catanzarite, Jason F. Rowe, Geert Barentsen, Douglas A. Caldwell, Bruce D. Clarke, Jon M. Jenkins, Jie Li, David W. Latham, Jack J. Lissauer, Savita Mathur, Robert L. Morris, Shawn E. Seader, Jeffrey C. Smith, Todd C. Klaus, Joseph D. Twicken, Bill Wohler, Rachel Akeson, David R. Ciardi, William D. Cochran, Thomas Barclay, Jennifer R. Campbell, William J. Chaplin, David Charbonneau, Christopher E. Henze, Steve B. Howell, Daniel Huber, Andrej Prsa, Solange V. Ramirez, Timothy D. Morton, Jorgen Christensen-Dalsgaard, Jessie L. Dotson, Laurance Doyle, Edward W. Dunham, Andrea K. Dupree, Eric B. Ford, John C. Geary, Forrest R. Girouard, Howard Isaacson, Hans Kjeldsen, Jason H. Steffen, Elisa V. Quintana, Darin Ragozzine, Megan Shabram, Avi Shporer, Victor Silva Aguirre, Martin Still, Peter Tenenbaum, William F. Welsh, Angie Wolfgang, Khadeejah A. Zamudio, David G. Koch, William J. Borucki
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We present the Kepler Object of Interest (KOI) catalog of transiting exoplanets based on searching four years of Kepler time series photometry (Data Release 25, Q1-Q17). The catalog contains 8054 KOIs of which 4034 are planet candidates with periods between 0.25 and 632 days. Of these candidates, 219 are new and include two in multi-planet systems (KOI-82.06 and KOI-2926.05), and ten high-reliability, terrestrial-size, habitable zone candidates. This catalog was created using a tool called the Robovetter which automatically vets the DR25 Threshold Crossing Events (TCEs, Twicken et al. 2016). The Robovetter also vetted simulated data sets and measured how well it was able to separate TCEs caused by noise from those caused by low signal-to-noise transits. We discusses the Robovetter and the metrics it uses to sort TCEs. For orbital periods less than 100 days the Robovetter completeness (the fraction of simulated transits that are determined to be planet candidates) across all observed stars is greater than 85%. For the same period range, the catalog reliability (the fraction of candidates that are not due to instrumental or stellar noise) is greater than 98%. However, for low signal-to-noise candidates between 200 and 500 days around FGK dwarf stars, the Robovetter is 76.7% complete and the catalog is 50.5% reliable. The KOI catalog, the transit fits and all of the simulated data used to characterize this catalog are available at the NASA Exoplanet Archive.
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