Adaptive Optics Images III: 87 Kepler Objects of Interest

Abstract

The Kepler mission has revolutionized our understanding of exoplanets, but some of the planet candidates identified by Kepler may actually be astrophysical false positives or planets whose transit depths are diluted by the presence of another star. Adaptive optics images made with ARIES at the MMT of 87 Kepler Objects of Interest place limits on the presence of fainter stars in or near the Kepler aperture. We detected visual companions within 1" for five stars, between 1" and 2" for seven stars, and between 2" and 4" for 15 stars. For those systems, we estimate the brightness of companion stars in the Kepler bandpass and provide approximate corrections to the radii of associated planet candidates due to the extra light in the aperture. For all stars observed, we report detection limits on the presence of nearby stars. ARIES is typically sensitive to stars approximately 5.3 Ks magnitudes fainter than the target star within 1" and approximately 5.7 Ks magnitudes fainter within 2", but can detect stars as faint as delta Ks = 7.5 under ideal conditions.

arXiv commentAccepted to AJ. 16 pages, 7 figures, 2 tables. All images and limits will be available on the Kepler Community Follow-up Observing Program website (https://cfop.ipac.caltech.edu)

References in corpus (53)

• The UKIRT Infrared Deep Sky Survey (UKIDSS)
• Planet Occurrence within 0.25 AU of Solar-type Stars from Kepler
• The false positive rate of Kepler and the occurrence of planets
• GAIA: Composition, Formation and Evolution of the Galaxy
• Planetary Candidates Observed by Kepler, III: Analysis of the First 16 Months of Data
• Characteristics of planetary candidates observed by Kepler, II: Analysis of the first four months of data
• Prevalence of Earth-size planets orbiting Sun-like stars
• Understanding the Mass-Radius Relation for Sub-Neptunes: Radius as a Proxy for Composition
• The Occurrence Rate of Small Planets around Small Stars
• The Mass-Radius Relation for 65 Exoplanets Smaller than 4 Earth Radii
• Validation of Kepler's Multiple Planet Candidates. III: Light Curve Analysis & Announcement of Hundreds of New Multi-planet Systems
• Masses, Radii, and Orbits of Small Kepler Planets: The Transition from Gaseous to Rocky Planets
• The Transiting Circumbinary Planets Kepler-34 and Kepler-35
• Kepler Eclipsing Binary Stars. II. 2165 Eclipsing Binaries in the Second Data Release
• Characteristics of Kepler Planetary Candidates Based on the First Data Set: The Majority are Found to be Neptune-Size and Smaller
• Almost All of Kepler's Multiple Planet Candidates are Planets
• The Mass of KOI-94d and a Relation for Planet Radius, Mass, and Incident Flux
• A revised estimate of the occurrence rate of terrestrial planets in the habitable zones around kepler m-dwarfs
• An Efficient Automated Validation Procedure for Exoplanet Transit Candidates
• 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
• A Plateau in the Planet Population Below Twice the Size of Earth
• Kepler-22b: A 2.4 Earth-radius Planet in the Habitable Zone of a Sun-like Star
• On the Low False Positive Probabilities of Kepler Planet Candidates
• Validation of Kepler's Multiple Planet Candidates. II: Refined Statistical Framework and Descriptions of Systems of Special Interest
• Planetary Candidates Observed by Kepler IV: Planet Sample From Q1-Q8 (22 Months)
• The Exoplanet Census: A General Method, Applied to Kepler
• Expected Detection and False Alarm Rates for Transiting Jovian Planets
• Kepler 18-b, c, and d: A System Of Three Planets Confirmed by Transit Timing Variations, Lightcurve Validation, Spitzer Photometry and Radial Velocity Measurements
• Two Earth-sized planets orbiting Kepler-20
• SOPHIE velocimetry of Kepler transit candidates VII. A false-positive rate of 35% for Kepler close-in giant exoplanet candidates
• The Radius Distribution of Planets Around Cool Stars
• Identification of Background False Positives from Kepler Data
• Pre-Spectroscopic False Positive Elimination of Kepler Planet Candidates
• Influence of Stellar Multiplicity On Planet Formation. I. Evidence of Suppressed Planet Formation Due to Stellar Companions Within 20 AU and Validation of Four Planets From the Kepler Multiple Planet Candidates
• The Kepler Pixel Response Function
• The Kepler-19 System: A Transiting 2.2 R_Earth Planet and a Second Planet Detected via Transit Timing Variations
• They might be giants: luminosity class, planet frequency, and planet-metallicity relation of the coolest Kepler target stars
• Robotic Laser-Adaptive-Optics Imaging of 715 Kepler Exoplanet Candidates using Robo-AO
• Characterizing the Cool KOIs IV: Kepler-32 as a prototype for the formation of compact planetary systems throughout the Galaxy
• Contamination in the Kepler Field. Identification of 685 KOIs as False Positives Via Ephemeris Matching Based On Q1-Q12 Data
• Kepler-21b: A 1.6REarth Planet Transiting the Bright Oscillating F Subgiant Star HD 179070
• Adaptive Optics Images of Kepler Objects of Interest
• Transit Timing Observations from Kepler: II. Confirmation of Two Multiplanet Systems via a Non-parametric Correlation Analysis
• Kepler-10c, a 2.2-Earth radius transiting planet in a multiple system
• Multiplicity in transiting planet host stars. A Lucky Imaging study of Kepler candidates
• Terrestrial, Habitable-Zone Exoplanet Frequency from Kepler
• Kepler-14b: A massive hot Jupiter transiting an F star in a close visual binary
• The Occurrence Rate of Earth Analog Planets Orbiting Sunlike Stars
• Candidate Planets in the Habitable Zones of Kepler Stars
• A High False Positive Rate for Kepler Planetary Candidates of Giant Stars using Asterodensity Profiling
• Adaptive Optics Images II: 12 Kepler Objects of Interest and 15 Confirmed Transiting Planets
• Exoplanet Characterization by Proxy: a Transiting 2.15 R_Earth Planet Near the Habitable Zone of the Late K dwarf Kepler-61
• Limits on Stellar Companions to Exoplanet Host Stars With Eccentric Planets

Cited by in corpus (39)

• The California-Kepler Survey. III. A Gap in the Radius Distribution of Small Planets
• The California-Kepler Survey. IV. Metal-rich Stars Host a Greater Diversity of Planets
• Understanding The Effects Of Stellar Multiplicity On The Derived Planet Radii From Transit Surveys: Implications for Kepler, K2, and TESS
• Revised Stellar Properties of Kepler Targets for the Q1-17 (DR25) Transit Detection Run
• Planetary Candidates Observed by Kepler VI: Planet Sample from Q1-Q16 (47 Months)
• The Impact of Stellar Multiplicity on Planetary Systems, I.: The Ruinous Influence of Close Binary Companions
• The Kepler Follow-Up Observation Program. I. A Catalog of Companions to Kepler Stars from High-Resolution Imaging
• The orbital eccentricity of small planet systems
• 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)
• Friends of Hot Jupiters II: No Correspondence Between Hot-Jupiter Spin-Orbit Misalignment and the Incidence of Directly Imaged Stellar Companions
• Friends of Hot Jupiters. IV. Stellar companions beyond 50 AU might facilitate giant planet formation, but most are unlikely to cause Kozai-Lidov migration
• Kepler-1647b: the largest and longest-period Kepler transiting circumbinary planet
• Kepler-445, Kepler-446 and the Occurrence of Compact Multiples Orbiting Mid-M Dwarf Stars
• HEK VI: On the Dearth of Galilean Analogs in Kepler and the Exomoon Candidate Kepler-1625b I
• A Lucky Imaging search for stellar sources near 74 transit hosts
• Robo-AO Kepler Planetary Candidate Survey II: Adaptive Optics Imaging of 969 Kepler Exoplanet Candidate Host Stars
• Planet Hunters. VIII. Characterization of 41 Long-Period Exoplanet Candidates from Kepler Archival Data
• Robo-AO Kepler Planetary Candidate Survey III: Adaptive Optics Imaging of 1629 Kepler Exoplanet Candidate Host Stars
• Unresolved Binary Exoplanet Host Stars Fit as Single Stars: Effects on the Stellar Parameters
• A lucky imaging multiplicity study of exoplanet host stars II
• Robo-AO Kepler Survey IV: the effect of nearby stars on 3857 planetary candidate systems
• A Closer Look at Exoplanet Occurrence Rates: Considering the Multiplicity of Stars Without Detected Planets
• Stellar Companions to TESS Objects of Interest: A Test of Planet-Companion Alignment
• Robo-AO Kepler Survey V: The effect of physically associated stellar companions on planetary systems
• Biases in Planet Occurrence Caused by Unresolved Binaries in Transit Surveys
• The Effects of Stellar Companions on Exoplanet Radius Distributions
• Ondr}ejov echelle spectrograph, ground based support facility for exoplanet missions
• Planet Hunters X: Searching for Nearby Neighbors of 75 Planet and Eclipsing Binary Candidates from the K2 Kepler Extended Mission
• Possible detection of a bimodal cloud distribution in the atmosphere of HAT-P-32\,A\,b from multi-band photometry
• The Stars Kepler Missed: Investigating the Kepler Target Selection Function Using Gaia DR2
• Revising Properties of Planet-Host Binary Systems. III. There is No Observed Radius Gap For Kepler Planets in Binary Star Systems
• A Comparison of Spectroscopic versus Imaging Techniques for Detecting Close Companions to Kepler Objects of Interest
• On the Stellar Companion to the Exoplanet Hosting Star 30 Arietis B
• Probability of Physical Association of 104 Blended Companions to \textit{Kepler} Objects of Interest Using Visible and Near-Infrared Adaptive Optics Photometry
• Revising Properties of Planet-host Binary Systems II: Apparent Near-Earth Analog Planets in Binaries Are Often Sub-Neptunes
• Characterization of Low Mass K2 Planet Hosts Using Near-Infrared Spectroscopy
• The Robo-AO KOI Survey: laser adaptive optics imaging of every Kepler exoplanet candidate
• Disentangling Blended K2 Photometry: Determining the Planetary Host Star