Detection of Potential Transit Signals in 17 Quarters of Kepler Data: Results of the Final Kepler Mission Transiting Planet Search (Dr25)

Abstract

We present results of the final Kepler Data Processing Pipeline search for transiting planet signals in the full 17-quarter primary mission data set. The search includes a total of 198,709 stellar targets, of which 112,046 were observed in all 17 quarters and 86,663 in fewer than 17 quarters. We report on 17,230 targets for which at least one transit signature is identified that meets the specified detection criteria: periodicity, minimum of three observed transit events, detection statistic (i.e., signal-to-noise ratio) in excess of the search threshold, and passing grade on three statistical transit consistency tests. Light curves for which a transit signal is identified are iteratively searched for additional signatures after a limb-darkened transiting planet model is fitted to the data and transit events are removed. The search for additional planets adds 16,802 transit signals for a total of 34,032; this far exceeds the number of transit signatures identified in prior pipeline runs. There was a strategic emphasis on completeness over reliability for

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

“…obsTCE: observed TCEs. TCEs found by searching the observed DR25 Kepler data and reported in Twicken et al (2016). See Section 2.1. injTCE: injected TCEs.…”

“…40 The DR25 obsTCEs were created by running the SOC 9.3 version of the Kepler Pipeline on the DR25, Q1-Q17 Kepler time series. For a thorough discussion of the DR25 TCEs and on the pipeline's search, see Twicken et al (2016).…”

“…In Table 5 we report the entire list of obsTCEs that were not made into KOIs despite being dispositioned as transit-like (or not transitlike with a disposition score 0.1) and the automated federation telling us that one was appropriate. To identify the TCEs, we specify the Kepler Input Catalog number and the planet number given by the Kepler Pipeline (Twicken et al 2016).…”

The California-Kepler Survey. I. High-resolution Spectroscopy of 1305 Stars Hosting Kepler Transiting Planets*

“…Assembling the Kepler planet catalogs required the extraordinary effort and devotion of the Kepler team members Batalha et al 2013;Burke et al 2014;Rowe et al 2015). Also essential was the painstaking engineering behind the photometer (Caldwell et al 2010;Bryson et al 2010;Haas et al 2010;Gilliland et al 2011), as well as the software engineering that transformed CCD pixel values into planet candidates (Batalha et al 2010a(Batalha et al , 2010bGilliland et al 2010;Jenkins et al 2010;Torres et al 2011;Christiansen et al 2012Christiansen et al , 2013Christiansen et al , 2015Christiansen et al , 2016Kinemuchi et al 2012;Smith et al 2012Smith et al , 2016Stumpe et al 2012;Bryson et al 2013;Tenenbaum et al 2013Tenenbaum et al , 2014McCauliff et al 2015;Thompson et al 2015;Twicken et al 2016). …”

Stellar Spin–Orbit Alignment for Kepler-9, a Multi-transiting Planetary System with Two Outer Planets Near 2:1 Resonance

“…Whether this system has low spin-orbit angle or not may provide a key zeroth-order test of origin scenarios of spinorbit misalignments and competing migration paradigms for hot Jupiters. Kepler-9b has very large planet-star size ratio of R R 0.0842 0.0069 Twicken et al 2016)-among the largest ratios yet detected in multiplanet systems. It thus offers a rare opportunity to carry out a spin-orbit angle measurement in a multiplanet system.…”