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Measuring Transit Signal Recovery in the Kepler Pipeline. IV. Completeness of the DR25 Planet Candidate Catalog

Christiansen, Jessie L. and Clarke, Bruce D. and Burke, Christopher J. and Jenkins, Jon M. and Bryson, Stephen T. and Coughlin, Jeffrey L. and Mullally, Susan E. and Twicken, Joseph D. and Batalha, Natalie M. and Catanzarite, Joseph and Uddin, AKM Kamal and Zamudio, Khadeejah and Smith, Jeffrey C. and Henze, Christopher E. and Campbell, Jennifer (2020) Measuring Transit Signal Recovery in the Kepler Pipeline. IV. Completeness of the DR25 Planet Candidate Catalog. Astronomical Journal, 160 (4). Art. No. 159. ISSN 1538-3881. doi:10.3847/1538-3881/abab0b.

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In this work we empirically measure the detection efficiency of the Kepler pipeline used to create the final Kepler threshold crossing event and planet candidate catalogs, a necessary ingredient for occurrence-rate calculations using these lists. By injecting simulated signals into the calibrated pixel data and processing those pixels through the pipeline as normal, we quantify the detection probability of signals as a function of their signal strength and orbital period. In addition, we investigate the dependence of the detection efficiency on parameters of the target stars and their location in the Kepler field of view. We find that the end-of-mission version of the Kepler pipeline returns to a high overall detection efficiency, averaging a 90%–95% rate of detection for strong signals across a wide swathe variety of parameter space. We find a weak dependence of the detection efficiency on the number of transits contributing to the signal and the orbital period of the signal, and a stronger dependence on the stellar effective temperature and correlated noise properties. We also find a weak dependence of the detection efficiency on the position within the field of view. By restricting the Kepler stellar sample to stars with well-behaved correlated noise properties, we can define a set of stars with high detection efficiency for future occurrence-rate calculations.

Item Type:Article
Related URLs:
URLURL TypeDescription
Christiansen, Jessie L.0000-0002-8035-4778
Burke, Christopher J.0000-0002-7754-9486
Jenkins, Jon M.0000-0002-4715-9460
Bryson, Stephen T.0000-0003-0081-1797
Coughlin, Jeffrey L.0000-0003-1634-9672
Mullally, Susan E.0000-0001-7106-4683
Twicken, Joseph D.0000-0002-6778-7552
Batalha, Natalie M.0000-0002-7030-9519
Catanzarite, Joseph0000-0001-7980-4658
Smith, Jeffrey C.0000-0002-6148-7903
Additional Information:© 2020. The American Astronomical Society. Received 2019 December 4; revised 2020 July 26; accepted 2020 July 29; published 2020 September 10. We thank the anonymous referee for thoughtful comments and questions that improved the manuscript. Funding for the Kepler Discovery Mission is provided by NASA's Science Mission Directorate. These data products were generated by the Kepler Mission science pipeline through the efforts of the Kepler Science Operations Center and Science Office. This research has made use of 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. Facility: Kepler. -
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Subject Keywords:Exoplanet astronomy ; Exoplanet catalogs ; Exoplanet detection methods
Issue or Number:4
Classification Code:Unified Astronomy Thesaurus concepts: Exoplanet astronomy (486); Exoplanet catalogs (488); Exoplanet detection methods (489)
Record Number:CaltechAUTHORS:20200911-133137674
Persistent URL:
Official Citation:Jessie L. Christiansen et al 2020 AJ 160 159
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:105350
Deposited By: George Porter
Deposited On:15 Sep 2020 14:13
Last Modified:16 Nov 2021 18:42

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