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Planetary Candidates Observed by Kepler. VIII. A Fully Automated Catalog with Measured Completeness and Reliability Based on Data Release 25

Thompson, Susan E. and Coughlin, Jeffrey L. and Hoffman, Kelsey and Mullally, Fergal and Christiansen, Jessie L. and Burke, Christopher J. and Bryson, Steve and Batalha, Natalie and Haas, Michael R. and Catanzarite, Joseph and Rowe, Jason F. and Barentsen, Geert and Caldwell, Douglas A. and Clarke, Bruce D. and Jenkins, Jon M. and Li, Jie and Latham, David W. and Lissauer, Jack J. and Mathur, Savita and Morris, Robert L. and Seader, Shawn E. and Smith, Jeffrey C. and Klaus, Todd C. and Twicken, Joseph D. and Van Cleve, Jeffrey E. and Wohler, Bill and Akeson, Rachel and Ciardi, David R. and Cochran, William D. and Henze, Christopher E. and Howell, Steve B. and Huber, Daniel and Prša, Andrej and Ramírez, Solange V. and Morton, Timothy D. and Barclay, Thomas and Campbell, Jennifer R. and Chaplin, William J. and Charbonneau, David and Christensen-Dalsgaard, Jørgen and Dotson, Jessie L. and Doyle, Laurance and Dunham, Edward W. and Dupree, Andrea K. and Ford, Eric B. and Geary, John C. and Girouard, Forrest R. and Isaacson, Howard and Kjeldsen, Hans and Quintana, Elisa V. and Ragozzine, Darin and Shabram, Megan and Shporer, Avi and Aguirre, Victor Silva and Steffen, Jason H. and Still, Martin and Tenenbaum, Peter and Welsh, William F. and Wolfgang, Angie and Zamudio, Khadeejah A and Koch, David G. and Borucki, William J. (2018) Planetary Candidates Observed by Kepler. VIII. A Fully Automated Catalog with Measured Completeness and Reliability Based on Data Release 25. Astrophysical Journal Supplement Series, 235 (2). Art. No. 38. ISSN 1538-4365.

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We present the Kepler Object of Interest (KOI) catalog of transiting exoplanets based on searching 4 yr 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, including two in multiplanet systems (KOI-82.06 and KOI-2926.05) and 10 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). 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 discuss 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.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Thompson, Susan E.0000-0001-7106-4683
Christiansen, Jessie L.0000-0002-8035-4778
Akeson, Rachel0000-0001-9674-1564
Ciardi, David R.0000-0002-5741-3047
Huber, Daniel0000-0001-8832-4488
Shporer, Avi0000-0002-1836-3120
Additional Information:© 2018. The American Astronomical Society. Received 2017 October 13; revised 2018 February 18; accepted 2018 March 1; published 2018 April 9. The authors would like to thank the anonymous referee for providing comments that improved the clarity and accuracy of this manuscript. This paper includes data collected by the Kepler mission. The Kepler mission was a PI-led Discovery Class Mission funded by the NASA Science Mission directorate. The authors acknowledge the efforts of the Kepler mission team for generating the many data products used to create the KOI catalog. These products were generated by the Kepler mission science pipeline through the efforts of the Kepler Science Operations Center and Science Office. The Kepler mission is led by the project office at NASA Ames Research Center. Ball Aerospace built the Kepler photometer and spacecraft, which is operated by the mission operations center at LASP. We acknowledge the Kepler Education and Outreach team for their efforts in making the results of this paper accessible to the public. We thank the many scientists who contributed to the Kepler mission over the years, including R. Gilliland, E. Furlan, J. Orosz, and K. Colón. We thank the managers and engineers who worked on Kepler over the years, without whom we would not have had a successful Kepler mission. This research has made use of NASA's Astrophysics Data System. We thank GNU parallel for enabling rapid running of the Robovetter input metrics (Tange 2011). We thank P. P. Mullally for inspiring the names of certain algorithms. Thank you to Turbo-King et al. (2017) for a spirited discussion. Some of the data products used in this paper are archived at the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. Some of the data presented in this paper were obtained from the Mikulski Archive for Space Telescopes (MAST). STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555. Support for MAST for non-HST data is provided by the NASA Office of Space Science via grant NNX09AF08G and by other grants and contracts. J.F.R. acknowledges support from NASA grant NNX14AB82G issued through the Kepler Participating Scientist Program. This research was undertaken, in part, thanks to funding from the Canada Research Chairs program. This research was enabled, in part, by support provided by Calcul Québec ( and Compute Canada ( D.H. and S.M. acknowledge support by the National Aeronautics and Space Administration under grant NNX14AB92G issued through the Kepler Participating Scientist Program. J.L.C. is supported by NASA under award no. GRNASM99G000001. J.S. is supported by the NASA Kepler Participating Scientist Program NNX16AK32G. W.F.W. gratefully acknowledges support from NASA via the Kepler Participating Scientist Program grant NNX14AB91G. V.S.A. acknowledges support from VILLUM FONDEN (research grant 10118). Funding for the Stellar Astrophysics Centre is provided by the Danish National Research Foundation (grant DNRF106). The research was supported by the ASTERISK project (ASTERoseismic Investigations with SONG and Kepler) funded by the European Research Council (grant agreement no. 267864). Software: George (Ambikasaran et al. 2014), Kepler Science Data Processing Pipeline (, Robovetter (, Marshall (, Centroid Robovetter (Mullally 2017), LPP Metric (Thompson et al. 2015a), Model-Shift Uniqueness Test (Rowe et al. 2015a), Scipy package (, Ephemeris Match (, Kepler: Kepler Transit Model Codebase Release,
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Canada Research Chairs ProgramUNSPECIFIED
Villum Foundation10118
Danish National Research FoundationDNRF106
European Research Council (ERC)267864 ASTERISK
NASA Postdoctoral ProgramUNSPECIFIED
NSF Astronomy and Astrophysics FellowshipUNSPECIFIED
Subject Keywords:catalogs; planetary systems; stars: general; surveys
Issue or Number:2
Record Number:CaltechAUTHORS:20180409-153352280
Persistent URL:
Official Citation:Susan E. Thompson et al 2018 ApJS 235 38
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:85697
Deposited By: George Porter
Deposited On:09 Apr 2018 23:18
Last Modified:03 Oct 2019 19:34

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