Identifying False Alarms in the Kepler Planet Candidate Catalog

Abstract

We present a new automated method to identify instrumental features masquerading as small, long period planets in the \kepler\ planet candidate catalog. These systematics, mistakenly identified as planet transits, can have a strong impact on occurrence rate calculations because they cluster in a region of parameter space where Kepler's sensitivity to planets is poor. We compare individual transit-like events to a variety of models of real transits and systematic events, and use a Bayesian Information Criterion to evaluate the likelihood that each event is real. We describe our technique and test its performance on simulated data. Results from this technique are incorporated in the \kepler\ Q1-17 DR24 planet candidate catalog of \citet{Coughlin15}.

6 pages. Accepted for publication in PASP

References in corpus (7)

• Planetary Candidates Observed by Kepler VI: Planet Sample from Q1-Q16 (47 Months)
• Modeling Kepler transit light curves as false positives: Rejection of blend scenarios for Kepler-9, and validation of Kepler-9d, a super-Earth-size planet in a multiple system
• Planetary Candidates Observed by Kepler. VII. The First Fully Uniform Catalog Based on The Entire 48 Month Dataset (Q1-Q17 DR24)
• Planetary Candidates Observed by Kepler V: Planet Sample from Q1-Q12 (36 Months)
• SOPHIE velocimetry of Kepler transit candidates VII. A false-positive rate of 35% for Kepler close-in giant exoplanet candidates
• Low False-Positive Rate of Kepler Candidates Estimated From A Combination Of Spitzer And Follow-Up Observations
• Detection of Potential Transit Signals in 17 Quarters of Kepler Mission Data

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• Detection of Potential Transit Signals in 17 Quarters of Kepler Data: Results of the Final Kepler Mission Transiting Planet Search (DR25)
• Identifying Exoplanets with Deep Learning III: Automated Triage and Vetting of TESS Candidates
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• Families of Plausible Solutions to the Puzzle of Boyajian's Star
• Rapid Classification of TESS Planet Candidates with Convolutional Neural Networks
• Measuring Transit Signal Recovery in the Kepler Pipeline. III. Completeness of the Q1-Q17 DR24 Planet Candidate Catalogue, with Important Caveats for Occurrence Rate Calculations
• Exoplanet Characterization by Multi-Observatory Transit Photometry with TESS and CHEOPS
• Rocky Planet Formation: Quick and Neat
• Scaling K2. IV. A Uniform Planet Sample for Campaigns 1-8 and 10-18
• Scaling K2. II. Assembly of a Fully Automated C5 Planet Candidate Catalog Using EDI-Vetter
• Kepler's Earth-like Planets Should Not Be Confirmed Without Independent Detection: The Case of Kepler-452b
• Detecting Exoplanet Transits through Machine Learning Techniques with Convolutional Neural Networks
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• Pterodactyls: A Tool to Uniformly Search and Vet for Young Transiting Planets In TESS Primary Mission Photometry
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• Sensitivity Analyses of Exoplanet Occurrence Rates from Kepler and Gaia
• Characterization of low-mass companions to $\text{Kepler}$ objects of interest observed with APOGEE-N
• DART-Vetter: A Deep LeARning Tool for automatic triage of exoplanet candidates
• Exoplanet transit search at the detection limit: detection and false alarm vetting pipeline
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