A Catalog of Kepler Habitable Zone Exoplanet Candidates

Abstract

The NASA Kepler mission has discovered thousands of new planetary candidates, many of which have been confirmed through follow-up observations. A primary goal of the mission is to determine the occurrance rate of terrestrial-size planets within the Habitable Zone (HZ) of their host stars. Here we provide a list of HZ exoplanet candidates from the Kepler Data Release 24 Q1-Q17 data vetting process. This work was undertaken as part of the Kepler Habitable Zone Working Group. We use a variety of criteria regarding HZ boundaries and planetary sizes to produce complete lists of HZ candidates, including a catalog of 104 candidates within the optimistic HZ and 20 candidates with radii less than two Earth radii within the conservative HZ. We cross-match our HZ candidates with the Data Release 25 stellar properties and confirmed planet properties to provide robust stellar parameters and candidate dispositions. We also include false positive probabilities recently calculated by Morton et al. (2016) for each of the candidates within our catalogs to aid in their validation. Finally, we performed dynamical analysis simulations for multi-planet systems that contain candidates with radii less than two Earth radii as a step toward validation of those systems.

14 pages, 2 figures, 4 tables, accepted for publication in the Astrophysical Journal

References in corpus (16)

• Most 1.6 Earth-Radius Planets are not Rocky
• Habitable Zones Around Main-Sequence Stars: Dependence on Planetary Mass
• An Earth-sized Planet in the Habitable Zone of a Cool Star
• Exoplanet population inference and the abundance of Earth analogs from noisy, incomplete catalogs
• Planetary Candidates Observed by Kepler VI: Planet Sample from Q1-Q16 (47 Months)
• Strong Dependence of the Inner Edge of the Habitable Zone on Planetary Rotation Rate
• Kepler-62: A five-planet system with planets of 1.4 and 1.6 Earth radii in the Habitable Zone
• Asynchronous rotation of Earth-mass planets in the habitable zone of lower-mass stars
• 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
• Parameter estimation for power-law distributions by maximum likelihood methods
• Validation of Twelve Small Kepler Transiting Planets in the Habitable Zone
• Low False-Positive Rate of Kepler Candidates Estimated From A Combination Of Spitzer And Follow-Up Observations
• Formation, tidal evolution and habitability of the Kepler-186 system
• Hubble Space Telescope High Resolution Imaging of Kepler Small and Cool Exoplanet Host Stars
• Revision of Earth-sized Kepler Planet Candidate Properties with High Resolution Imaging by Hubble Space Telescope

Cited by in corpus (54)

• How to Characterize Habitable Worlds and Signs of Life
• The Gaia-Kepler Stellar Properties Catalog. II. Planet Radius Demographics as a Function of Stellar Mass and Age
• The Occurrence of Rocky Habitable Zone Planets Around Solar-Like Stars from Kepler Data
• A Review of Exoplanetary Biosignatures
• Solar System Physics for Exoplanet Research
• A Limited Habitable Zone for Complex Life
• The redshift evolution of major merger triggering of luminous AGN: a slight enhancement at z$\sim$2
• Setting the stage for the search for life with the Habitable Worlds Observatory: Properties of 164 promising planet survey targets
• Rethinking CO Antibiosignatures in the Search for Life Beyond the Solar System
• A Second Earth-Sized Planet in the Habitable Zone of the M Dwarf, TOI-700
• Transits of Known Planets Orbiting a Naked-Eye Star
• A Reanalysis of the Fundamental Parameters and Age of TRAPPIST-1
• Evaluating the Plausible Range of N2O Biosignatures on Exo-Earths: An Integrated Biogeochemical, Photochemical, and Spectral Modeling Approach
• The Demographics of Terrestrial Planets in the Venus Zone
• Validation of small Kepler transiting planet candidates in or near the habitable zone
• A Volatile-Poor Formation of LHS 3844b based on its Lack of Significant Atmosphere
• A search for technosignatures from TRAPPIST-1, LHS 1140, and 10 planetary systems in the Kepler field with the Green Bank Telescope at 1.15-1.73 GHz
• Global Mapping of an Exo-Earth using Sparse Modeling
• In the Presence of a Wrecking Ball: Orbital Stability in the HR 5183 System
• A Helicity-Based Method to Infer the CME Magnetic Field Magnitude in Sun and Geospace: Generalization and Extension to Sun-Like and M-Dwarf Stars and Implications for Exoplanet Habitability
• Quantitative estimates of the surface habitability of Kepler-452b
• Quantifying the Influence of Jupiter on the Earth's Orbital Cycles
• On the Orbital Inclination of Proxima Centauri b
• Dynamical Packing in the Habitable Zone: The Case of Beta CVn
• Expanding the Timeline for Earth's Photosynthetic Red Edge Biosignature
• Asteroseismology of the Multiplanet System K2-93
• Atmospheric Dynamics of a Near Tidally Locked Earth-Size Planet
• Predicting multiple planet stability and habitable zone companions in the TESS era
• Direct Imaging of Exoplanets Beyond the Radial Velocity Limit: Application to the HD 134987 System
• The Impact of the Temporal Distribution of Communicating Civilizations on their Detectability
• Characterization of the Wolf 1061 Planetary System
• A Flexible Bayesian Framework for Assessing Habitability with Joint Observational and Model Constraints
• EXPRES IV: Two Additional Planets Orbiting $\rho$ Coronae Borealis Reveal Uncommon System Architecture
• Climates of Warm Earth-Like Planets III: Fractional Habitability from a Water Cycle Perspective
• A Distinct Population of Small Planets: Sub-Earths
• Finding Signs of Life in Transit: High-resolution Transmission Spectra of Earth-like Planets around FGKM Host Stars
• K2-HERMES II. Planet-candidate properties from K2 Campaigns 1-13
• Three small transiting planets around the M dwarf host star LP 358-499
• Orbital Dynamics and the Evolution of Planetary Habitability in the AU Mic System
• HD 83443c: A highly eccentric giant planet on a 22-year orbit
• High-Resolution spectral models of TRAPPIST-1e seen as a Pale Blue Dot for ELT and JWST observations
• TOI-712: a system of adolescent mini-Neptunes extending to the habitable zone
• High-resolution Spectra for a Wide Range of Habitable Zone Planets around Sun-like Stars
• Follow the Water: Finding Water, Snow and Clouds on Terrestrial Exoplanets with Photometry and Machine Learning
• Phase Modeling of the TRAPPIST-1 Planetary Atmospheres
• Kepler-62f: Kepler's First Small Planet in the Habitable Zone, but Is It Real?
• Tides Tighten the Hycean Habitable Zone
• New Dynamical State and Habitability of the HD 45364 Planetary System
• A systematic study of \ce{CO2} planetary atmospheres and their link to the stellar environment
• Can Planets Exist in the Habitable Zone of 55~Cancri?
• Effect of multiple scattering on the Transmission spectra and the Polarization phase curves for Earth-like Exoplanets
• Probing the Limits of Habitability: A Catalog of Rocky Exoplanets in the Habitable Zone
• Discovery of a Nearby Habitable Zone Super-Earth Candidate Amenable to Direct Imaging
• New models of reflection spectra for terrestrial exoplanets: Present and prebiotic Earth orbiting around stars of different spectral types