Scaling K2. II. Assembly of a Fully Automated C5 Planet Candidate Catalog Using EDI-Vetter

Abstract

We present a uniform transiting exoplanet candidate list for Campaign 5 of the K2 mission. This catalog contains 75 planets with 7 multi-planet systems (5 double, 1 triple, and 1 quadruple planet system). Within the range of our search, we find 8 previously undetected candidates with the remaining 66 candidates overlapping 51% of the Kruse et al. study that manually vet Campaign 5 candidates. In order to vet our potential transit signals, we introduce the Exoplanet Detection Identification Vetter (EDI-Vetter), which is a fully automated program able to determine if a transit signal should be labeled as a false positive or a planet candidate. This automation allows us to create a statistically uniform catalog, ideal for planet occurrence rate measurements. When tested, the vetting software is able to ensure our sample is 94.2% reliable against systematic false positives. Additionally, we inject artificial transits at the light-curve-level of the raw K2 data and find the maximum completeness of our pipeline is 70% before vetting and 60% after vetting. For convenience of future occurrence rate studies, we include measurements of stellar noise (CDPP) and the three-transit window function for each target. This study is part of a larger survey of the K2 data set and the methodology which will be applied to the entirety of the K2 data set.

arXiv comment28 pages, 11 figures, and 3 data files. Submitted for publication in AJ

References in corpus (61)

• emcee: The MCMC Hammer
• Gaia Data Release 2. Summary of the contents and survey properties
• Analytic Lightcurves for Planetary Transit Searches
• The K2 Mission: Characterization and Early results
• The California-Kepler Survey. III. A Gap in the Radius Distribution of Small Planets
• Planet Occurrence within 0.25 AU of Solar-type Stars from Kepler
• SparsePak: A Formatted Fiber Field Unit for The WIYN Telescope Bench Spectrograph. I. Design, Construction, and Calibration
• batman: BAsic Transit Model cAlculatioN in Python
• Planetary Candidates Observed by Kepler, III: Analysis of the First 16 Months of Data
• Prevalence of Earth-size planets orbiting Sun-like stars
• Overview of the Kepler Science Processing Pipeline
• The Occurrence Rate of Small Planets around Small Stars
• A Technique for Extracting Highly Precise Photometry for the Two-Wheeled Kepler Mission
• Planetary Candidates Observed by Kepler. VIII. A Fully Automated Catalog With Measured Completeness and Reliability Based on Data Release 25
• Terrestrial Planet Occurrence Rates for the Kepler GK Dwarf Sample
• Revised Radii of Kepler Stars and Planets Using Gaia Data Release 2
• The K2 Ecliptic Plane Input Catalog (EPIC) and Stellar Classifications of 138,600 Targets in Campaigns 1-8
• The Derivation, Properties and Value of Kepler's Combined Differential Photometric Precision
• Planetary Candidates Observed by Kepler VI: Planet Sample from Q1-Q16 (47 Months)
• The Exoplanet Population Observation Simulator. I - The Inner Edges of Planetary Systems
• EVEREST: Pixel Level Decorrelation of K2 Light curves
• Wotan: Comprehensive time-series de-trending in Python
• Validation of Kepler's Multiple Planet Candidates. II: Refined Statistical Framework and Descriptions of Systems of Special Interest
• Planetary Candidates Observed by Kepler. VII. The First Fully Uniform Catalog Based on The Entire 48 Month Dataset (Q1-Q17 DR24)
• Stellar Rotation Periods of the Kepler Objects of Interest: A Dearth of Close-in Planets around Fast Rotators
• Planetary Candidates from the First Year of the K2 Mission
• An Increase in the Mass of Planetary Systems around Lower-Mass Stars
• The Exoplanet Census: A General Method, Applied to Kepler
• 197 Candidates and 104 Validated Planets in K2's First Five Fields
• Occurrence Rates of Planets orbiting FGK Stars: Combining Kepler DR25, Gaia DR2 and Bayesian Inference
• Planetary Candidates Observed by Kepler V: Planet Sample from Q1-Q12 (36 Months)
• Kepler Planet Occurrence Rates for Mid-Type M Dwarfs as a Function of Spectral Type
• 275 Candidates and 149 Validated Planets Orbiting Bright Stars in K2 Campaigns 0-10
• The Kepler Pixel Response Function
• Fast Rise of "Neptune-Size" Planets ($4-8R_{\mathrm{Earth}}$) from $P\sim 10$ to $\sim 250$ days -- Statistics of Kepler Planet Candidates Up to $\sim 0.75\mathrm{AU}$
• An update to the EVEREST K2 pipeline: Short cadence, saturated stars, and Kepler-like photometry down to Kp = 15
• Stellar Companions of Exoplanet Host Stars in K2
• New planetary and EB candidates from Campaigns 1-6 of the K2 mission
• Automatic Classification of Kepler Planetary Transit Candidates
• Measuring the Recoverability of Close Binaries in Gaia DR2 with the Robo-AO Kepler Survey
• Transiting exoplanet candidates from K2 Campaigns 5 and 6
• Characterizing K2 Candidate Planetary Systems Orbiting Low-Mass Stars II: Planetary Systems Observed During Campaigns 1-7
• Discovery of the Transiting Planet Kepler-5b
• Measuring Transit Signal Recovery in the Kepler Pipeline II: Detection Efficiency as Calculated in One Year of Data
• Accounting for Incompleteness due to Transit Multiplicity in Kepler Planet Occurrence Rates
• Two Transiting Earth-size Planets Near Resonance Orbiting a Nearby Cool Star
• That's How We Roll: The NASA K2 Mission Science Products and Their Performance Metrics
• Zodiacal Exoplanets in Time (ZEIT) VIII: A Two Planet System in Praesepe from K2 Campaign 16
• Measuring Transit Signal Recovery in the Kepler Pipeline I: Individual Events
• 44 Validated Planets from K2 Campaign 10
• Identifying Exoplanets with Deep Learning II: Two New Super-Earths Uncovered by a Neural Network in K2 Data
• A Search for Additional Planets in the NASA EPOXI Observations of the Exoplanet System GJ 436
• Detection of Hundreds of New Planet Candidates and Eclipsing Binaries in K2 Campaigns 0-8
• Discovery and Vetting of Exoplanets I: Benchmarking K2 Vetting Tools
• Ultra Short Period Planets in K2: SuPerPiG Results for Campaigns 0-5
• Planet Candidates from K2 Campaigns 5-8 and Follow-Up Optical Spectroscopy
• Accounting for Multiplicity in Calculating Eta Earth
• Planetary Candidates from K2 Campaign 16
• Identifying False Alarms in the Kepler Planet Candidate Catalog
• Observational Window Functions in Planet Transit Surveys
• Catalog of New K2 Exoplanet Candidates from Citizen Scientists

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• Evolution of the radius valley around low mass stars from $Kepler$ and $K2$
• Occurrence Rates of Planets Orbiting M Stars: Applying ABC to Kepler DR25, Gaia DR2, and 2MASS Data
• Scaling K2. VI. Reduced Small Planet Occurrence in High Galactic Amplitude Stars
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• Scaling K2. IV. A Uniform Planet Sample for Campaigns 1-8 and 10-18
• Searching For Transiting Planets Around Halo Stars. II. Constraining the Occurrence Rate of Hot Jupiters
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• NEMESIS: Exoplanet Transit Survey of Nearby M-Dwarfs in TESS FFIs I
• Pterodactyls: A Tool to Uniformly Search and Vet for Young Transiting Planets In TESS Primary Mission Photometry
• The SHERLOCK pipeline: new exoplanet candidates in the WASP-16, HAT-P-27, HAT-P-26, and TOI-2411 systems
• Scaling K2. III. Comparable Planet Occurrence in the FGK Samples of Campaign 5 and Kepler
• Accurate modeling of grazing transits using umbrella sampling
• A close-in puffy Neptune with hidden friends: The enigma of TOI 620
• TFAW survey. I. Wavelet-based denoising of K2 light curves. Discovery and validation of two new Earth-sized planets in K2 campaign 1
• Scaling K2 VIII: Short-Period Sub-Neptune Occurrence Rates Peak Around Early-Type M Dwarfs
• More planetary candidates from K2 Campaign 5 by tran_k2
• Scaling K2. V. Statistical Validation of 60 New Exoplanets From K2 Campaigns 2-18
• TFAW survey II: 6 Newly Validated Planets and 13 Planet Candidates from K2
• ExoVetter and a TESS Exoplanet Transit Search of Kepler Stars as Ground Truth