Defining and cataloging exoplanets: The exoplanet.eu database

Abstract

We describe an online database for extra-solar planetary-mass candidates, updated regularly as new data are available. We first discuss criteria for the inclusion of objects in the catalog: "definition" of a planet and several aspects of the confidence level of planet candidates. {\bf We are led to point out the conflict between sharpness of belonging or not to a catalogue and fuzziness of the confidence level.} We then describe the different tables of extra-solar planetary systems, including unconfirmed candidates (which will ultimately be confirmed, or not, by direct imaging). It also provides online tools: histogrammes of planet and host star data, cross-correlations between these parameters and some VO services. Future evolutions of the database are presented.

Accepted in Astronomy and Astrophysics (revised version)

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• The Impact of Stellar Rotation on the Detectability of Habitable Planets Around M Dwarfs
• A photometric study of the hot exoplanet WASP-19b
• Transiting exoplanets from the CoRoT space mission XXVIII. CoRoT-33b, an object in the brown dwarf desert with 2:3 commensurability with its host star
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• Evidence for Atmospheric Cold-trap Processes in the Noninverted Emission Spectrum of Kepler-13Ab Using HST/WFC3
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• Of `Cocktail Parties' and Exoplanets
• The Discovery of HD 37605c and a Dispositive Null Detection of Transits of HD 37605b
• Hot-Jupiter Inflation due to Deep Energy Deposition
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• On the Mass Function, Multiplicity, and Origins of Wide-Orbit Giant Planets
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• Planet Traps and Planetary Cores: Origins of the Planet-Metallicity Correlation
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• First spectroscopic observations of the sub-stellar companion of the young debris disk star PZ Telescopii
• Multiplicity of stars with planets in the solar neighbourhood
• Fiber scrambling for high-resolution spectrographs. I. Lick Observatory
• On the role of reduced wind mass-loss rate in enabling exoplanets to shape planetary nebulae
• Search for exoplanets and brown dwarfs with VLBI
• Orbital Eccentricity -- Multiplicity Correlation for Planetary Systems and Comparison to the Solar System
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• Characterizing fragmentation and sub-Jovian clump properties in magnetized young protoplanetary disks
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• KPS-1b: the first transiting exoplanet discovered using an amateur astronomer's wide-field CCD data
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• Direct Imaging discovery of a second planet candidate around the possibly transiting planet host CVSO 30
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• Gaia Search for stellar Companions of TESS Objects of Interest III
• Interferometric Measurement of Acceleration at Relativistic Speeds
• Disentangling the parameter space: The role of planet multiplicity in triggering dynamical instabilities on planetary systems around white dwarfs
• Discovery of a massive giant planet with extreme density around a sub-giant star TOI-4603
• The future influence of six exoplanets on the envelope properties of their parent stars on the giant branches
• Multi-filter transit observations of HAT-P-3b and TrES-3b with multiple Northern Hemisphere telescopes
• Universal scaling relation for magnetic sails: momentum braking in the limit of dilute interstellar media
• Predicting exoplanet observability in time, contrast, separation and polarization, in scattered light
• Strong H$\alpha$ emission in the young planetary mass companion 2MASS J0249-0557 c
• Planets around evolved intermediate-mass stars in open clusters II. Are there really planets around IC4651No9122, NGC2423No3 and NGC4349No127?
• The influence of general-relativity effects, dynamical tides and collisions on planet-planet scattering close to the star
• A long-period massive planet around HD106515A
• A sub-Neptune planet around TOI-1695 discovered and characterized with SPIRou and TESS
• Minimum Orbital Periods of H-Rich Bodies
• Multi-band characterization of the hot Jupiters: WASP-5b, WASP-44b and WASP-46b
• Orbital Dynamics of Exoplanetary Systems Kepler-62, HD 200964 and Kepler-11
• Dynamical Constraints on Outer Planets in Super-Earth Systems
• Archival VLT/NaCo multiplicity investigation of exoplanet host stars
• Radio eclipses of exoplanets by the winds of their host stars
• Nature vs. nurture: a Bayesian framework for assessing apparent correlations between planetary orbital properties and stellar ages
• Capture of primordial black holes in extrasolar systems
• SWEET-Cat: A view on the planetary mass-radius relation
• Exomoon search with VLTI/GRAVITY around the substellar companion HD 206893 B
• Exploiting periodic orbits as dynamical clues for Kepler and K2 systems
• NIGHT: a compact, near-infrared, high-resolution spectrograph to survey helium in exoplanet systems
• Can there be additional rocky planets in the Habitable Zone of tight binary stars with a known gas giant?
• Populations of Extrasolar Giant Planets from Transit and Radial Velocity Surveys
• On the incidence of \textit{WISE} infrared excess among solar analog, twin and sibling stars
• The Rate of Planet-star Coalescences Due to Tides and Stellar Evolution
• Search for radio emission from the exoplanets Qatar-1b and WASP-80b near 150 MHz using the Giant Metrewave Radio Telescope
• Experimental Demonstration of a Quantum-Optimal Coronagraph Using Spatial Mode Sorters
• Scaling in global tidal dissipation of the Earth-Moon system
• The structure of the co-orbital stable regions as a function of the mass ratio
• Constraint on Additional Planets in Planetary Systems Discovered through the Channel of High-magnification Gravitational Microlensing Events
• Fine-resolution analysis of exoplanetary distributions by wavelets: hints of an overshooting iceline accumulation
• HADES RV programme with HARPS-N at TNG XIV. A candidate super-Earth orbiting the M-dwarf GJ 9689 with a period close to half the stellar rotation period
• Fear the Shadows of the Giants: On Secular Perturbations in Circumstellar Habitable Zones of Double Stars
• Machine learning approach for mapping the stable orbits around planets
• A uniform treatment of the orbital effects due to a violation of the Strong Equivalence Principle in the gravitational Stark-like limit
• Searching for Wide Companions and Identifying Circum(sub)stellar Disks through PSF-Fitting of Spitzer/IRAC Archival Images
• Infrared excesses in stars with and without planets using revised $WISE$ photometry
• Scattered polarized radiation of extrasolar circumplanetary rings
• A differential Least Squares Deconvolution method for high precision spectroscopy of stars and exoplanets I. Application to obliquity measurements of HARPS observations of HD189733b
• The rectilinear three body problem as a basis for studying highly-eccentric systems
• Future Exoplanet Research: Science Questions and How to Address Them
• One of Everything: The Breakthrough Listen Exotica Catalog
• Detection of Laplace-resonant three-planet systems from transit timing variations
• Definition of Exoplanets and Brown Dwarfs
• Taxonomy of the extrasolar planet
• Planets similar in size are often dissimilar in interior
• Search for Exoplanets around Northern Circumpolar Stars- II. The Detection of Radial Velocity Variations in M Giant Stars HD 36384, HD 52030, and HD 208742
• The potential of combining MATISSE and ALMA observations: Constraining the structure of the innermost region in protoplanetary discs
• Single Hit Energy-resolved Laue Diffraction
• K2-399 b is not a planet. The Saturn that wandered through the Neptune desert is actually a hierarchical eclipsing binary
• The Formation of Habitable Planets in the Four-Planet System HD 141399
• The Most Common Habitable Planets II -- Salty Oceans in Low Mass Habitable Planets and Global Climate Evolution
• Zero Age Planetary Orbit of Gas Giant Planets Revisited: Reinforcement of the Link with Stellar Metallicity
• Planetary architectures under the influence of a stellar binary
• Earth-like planet predictor: A machine learning approach
• Generation of an optimal target list for the Exoplanet Characterisation Observatory (EChO)
• Exo-MerCat v2.0.0: updates and open-source release of the Exoplanet Merged Catalog software
• Planetary population synthesis
• A Bayesian Monte Carlo assessment of orbital stability in the late stages of planetary system formation
• Repeating X-ray bursts: Interaction between a neutron star and clumps partially disrupted from a planet
• Maps and Masses of Transiting Exoplanets: Towards New Insights into Atmospheric and Interior Properties of Planets
• The excitation of planetary orbits by stellar jet variability and polarity reversal
• Reflected light from giant planets in habitable zones: Tapping into the power of the Cross-Correlation Function
• Toward an initial mass function for giant planets
• Combining Kepler and HARPS Occurrence Rates to Infer the Period-Mass-Radius Distribution of Super-Earths/Sub-Neptunes
• Examining the detectability of ringing on highly eccentric exoplanets
• Fates of the sub-stellar objects (FOSSO) I. Fates of the known brown dwarfs in main-sequence--BD binaries
• CoRoT: The First Space-Based Transit Survey to Explore the Close-in Planet Population
• Orbital Properties and Gravitational Wave Signatures of Strange Crystal Planets
• No Giant Planet Pileup Near 1 AU
• Ground to Dust: Collisional Cascades and the Fate of Kardashev II Megaswarms
• New Giant Planet beyond the Snow Line for an Extended MOA Exoplanet Microlens Sample
• A compositional link between rocky exoplanets and their host stars
• Intermediate-mass stars and the origin of the gas-giant planet-metallicity correlation
• TOI-7154b: A Close-in Massive Brown Dwarf in an Eccentric Orbit
• On the possibility of habitable Trojan planets in binary star systems
• Resistive MHD Simulations of Stellar Wind-Magnetosphere Coupling in TRAPPIST-1e
• Revisiting BD-06 1339b: A Likely False Positive Caused by Stellar Activity
• ExoDNN: Boosting exoplanet detection with artificial intelligence. Application to Gaia Data Release 3
• Faint intermediate luminosity optical transients (ILOTs) from engulfing exoplanets on the Hertzsprung gap
• Search for (sub)stellar companions of exoplanet hosts by exploring the second ESA-Gaia data release
• Discovery of a young low-mass brown dwarf transiting a fast-rotating F-type star by the Galactic Plane eXoplanet (GPX) survey
• Detectability of continuous gravitational waves from planetary-mass companions orbiting compact stars
• Nature vs. Nurture: Investigating the Effects of Measurement Uncertainties in the Assessment of Potential Trends Between Planetary and Stellar Properties
• A sub-Saturn Mass-Radius Desert for Planets with Equilibrium Temperature Less than 600 K