Document Type
Article
Publication Date
4-9-2018
Publication Title
Astrophysical Journal Supplement
Volume
235
Issue
2
First page number:
1
Last page number:
49
Abstract
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.
Keywords
Catalogs; Planetary systems; Stars: General; Surveys
Disciplines
Astrophysics and Astronomy
File Format
File Size
5.846 Kb
Language
English
Repository Citation
Thompson, S. E.,
Coughlin, J. L.,
Hoffman, K.,
Mullally, F.,
Christiansen, J. L.,
Burke, C. J.,
Bryson, S.,
Batalha, N.,
Haas, M. R.,
Catanzarite, J.,
Rowe, J. F.,
Barentsen, G.,
Caldwell, D. A.,
Clarke, B. D.,
Jenkins, J. M.,
Li, J.,
Latham, D. W.,
Lissauer, J. J.,
Mathur, S.,
Morris, R. L.,
Seader, S. E.,
Smith, J. C.,
Klaus, T. C.,
Twicken, J. D.,
Van Cleve, J. E.,
Wohler, B.,
Akeson, R.,
Ciardi, D. R.,
Cochran, W. D.,
Henze, C. E.,
Howell, S. B.
(2018).
Planetary Candidates Observed by Kepler. VIII. A Fully Automated Catalog with Measured Completeness and Reliability Based on Data Release 25.
Astrophysical Journal Supplement, 235(2),
1-49.
http://dx.doi.org/10.3847/1538-4365/aab4f9