J/AJ/162/259ivo://CDS.VizieR/J/AJ/162/259doi:10.26093/cds/vizier.51620259CDSZink J.K.Hardegree-ullman K.K.Christiansen J.L.Bhure S.Adkins B.D.,Petigura E.A.Dressing C.D.Crossfield I.J.M.Schlieder J.E.2026-08-03T07:20:02Z2022-03-07T07:59:47ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frexoplanetsinfrared-photometryvisible-astronomystellar-massesstellar-radiiWe provide the first full K2 transiting exoplanet sample, using photometry from Campaigns 1-8 and 10-18, derived through an entirely automated procedure. This homogeneous planet candidate catalog is crucial to perform a robust demographic analysis of transiting exoplanets with K2. We identify 747 unique planet candidates and 57 multiplanet systems. Of these candidates, 366 have not been previously identified, including one resonant multiplanet system and one system with two short-period gas giants. By automating the construction of this list, measurements of sample biases (completeness and reliability) can be quantified. We carried out a light-curve-level injection/recovery test of artificial transit signals and found a maximum completeness of 61%, a consequence of the significant detrending required for K2 data analysis. Through this operation we attained measurements of the detection efficiency as a function of signal strength, enabling future population analysis using this sample. We assessed the reliability of our planet sample by testing our vetting software EDI-Vetter against inverted transit-free light curves. We estimate that 91% of our planet candidates are real astrophysical signals, increasing up to 94% when limited to the FGKM dwarf stellar population. We also constrain the contamination rate from background eclipsing binaries to less than 5%. The presented catalog, along with the completeness and reliability measurements, enable robust exoplanet demographic studies to be carried out across the fields observed by the K2 mission for the first time.2021AJ....162..259Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/162/259CatalogResearchIsServedByTAP VizieR generic servicerelated-toVII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)IV/34 : K2 Ecliptic Plane Input Catalog (EPIC) (Huber+, 2017)I/345 : Gaia DR2 (Gaia Collaboration, 2018)J/A+A/529/A75 : Limb-darkening coefficients (Claret+, 2011)J/PASP/124/1279 : Q3 Kepler's combined photometry (Christiansen+, 2012)J/ApJ/763/41 : Kepler multiple-candidate systems radii (Ciardi+, 2013)J/ApJ/767/95 : Improved stellar parameters smallest KIC stars (Dressing+, 2013)J/ApJS/204/24 : Kepler planetary candidates. III. (Batalha+, 2013)J/ApJS/207/35 : Kepler pipeline signal-to-noise studies (Christiansen+, 2013)J/AJ/147/119 : Catalog of sources in the Kepler field of view (Coughlin+, 2014)J/ApJ/787/80 : 139 Kepler planets transit time variations (Hadden+, 2014)J/AJ/150/133 : Stellar noise 4529 Kepler solar-type dwarfs (Gilliland+, 2015)J/ApJ/799/180 : Radii 430 KOI Earth- to Neptune-sized planets (Silburt+, 2015)J/ApJ/807/45 : Potentially habitable planet orbiting M dwarfs (Dressing+, 2015)J/ApJ/809/8 : Terrestrial planet occurrence rates for KOI stars (Burke+, 2015)J/ApJ/810/95 : Kepler pipeline S/N studies. II. 2011 data (Christiansen+, 2015)J/ApJS/217/16 : Kepler planetary candidates. V. 3yr Q1-Q12 (Rowe+, 2015)J/ApJS/217/31 : Kepler planetary candidates. VI. 4yr Q1-Q16 (Mullally+, 2015)J/A+A/587/A64 : Physical properties of giant exoplanets (Santerne+, 2016)J/A+A/594/A100 : K2 new planetary and EB candidates (Barros+, 2016)J/ApJ/822/86 : False positive probabilities Q1-Q17 DR24 KOIs (Morton+, 2016)J/ApJS/222/14 : Planetary candidates from 1st yr K2 mission (Vanderburg+, 2016)J/ApJS/224/2 : K2 EPIC stellar properties for 138600 targets (Huber+, 2016)J/ApJS/224/12 : Kepler planetary candidates. VII. 48-month (Coughlin+, 2016)J/ApJS/225/9 : Kepler TTVs. IX. The full long-cadence data set (Holczer+, 2016)J/ApJS/226/7 : Planet candidates discovered using K2 1st yr (Crossfield+, 2016)J/PASP/128/G4502 : False alarms Kepler planet candidate cat. (Mullally+, 2016)J/AJ/154/5 : Transit timing variations of 145 Kepler planets (Hadden+, 2017)J/AJ/154/109 : California-Kepler Survey. III. Planet radii (Fulton+, 2017)J/AJ/154/207 : K2 planetary systems orbiting low-mass stars (Dressing+, 2017)J/ApJ/856/23 : BANYAN. XI. The BANYAN {Sigma} algorithm (Gagne+, 2018)J/AJ/155/21 : Planet candidates from K2 campaigns 5-8 (Petigura+, 2018)J/AJ/155/48 : California-Kepler Survey. V. Masses and radii (Weiss+, 2018)J/AJ/155/136 : Planets orbiting bright stars in K2 campaigns 0-10 (Mayo+, 2018)J/AJ/156/22 : Planetary candidates from K2 Campaign 16 (Yu+, 2018)J/AJ/156/78 : 44 validated planets from K2 Campaign 10 (Livingston+, 2018)J/AJ/156/259 : Robo-AO detected close binaries in Gaia DR2 (Ziegler+, 2018)J/ApJS/235/38 : Kepler planetary cand. VIII. DR25 reliability (Thompson+, 2018)J/AJ/157/124 : DAVE. I. Benchmarking K2 vetting tools (Kostov+, 2019)J/AJ/157/169 : Identifying exoplanets with deep learning in K2 (Dattilo+, 2019)J/AJ/158/58 : Autoregressive planet search for Kepler stars (Caceres+, 2019)J/AJ/158/75 : Mid-type M dwarfs planet occurrence (Hardegree-Ullman+, 2019)J/AJ/158/109 : Occurrence rates of planets orbiting FGK stars (Hsu+, 2019)J/AJ/158/239 : Metal-rich stars abundances & equivalent widths (Teske+, 2019)J/ApJS/244/11 : Planet candidates and EBs in K2 campaigns 0-8 (Kruse+, 2019)J/AJ/159/154 : Exoplanet candidates Campaign 5 of the K2 mission (Zink+, 2020)J/AJ/159/211 : Exoplanet parameters from Kepler and K2 (Cloutier+, 2020)J/AJ/159/280 : Gaia-Kepler stellar prop. catalog.I. KIC stars (Berger+, 2020)J/ApJS/247/28 : K2 star parameters from Gaia & LAMOST (Hardegree-Ullman+, 2020)J/AJ/161/36 : 117 exoplanets in habitable zone with Kepler DR25 (Bryson+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/162/259https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/162/259http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/162/259https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/162/259https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/162/259http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/162/259GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/AJ/162/259/table1The homogeneous catalog of K2 planet candidates and their associated planet and stellar parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEPICEPIC Identifiermeta.id;meta.mainlongCAMPCampaign Identifiermeta.id;meta.datasetintCANDCandidate Identifiermeta.iddoubleMUTI[0/1] Found in Multiple Campaigns Flagmeta.codeintScore[0.51/0.98] Consistency Scoremeta.codefloatPer[0.53/39.6] Orbital perioddtime.perioddoublee_Per[0.000005/0.008] Lower Uncertainty in Perioddstat.errordoubleE_Per[0.000004/0.03] Upper Uncertainty in Perioddstat.error;stat.maxdoubleRatio[0.009/0.28] Planetary to stellar radii ratiostat.fit.omcfloate_Ratio[0/0.06] Lower Uncertainty in Ratiostat.error;arith.ratiofloatE_Ratio[0/0.05] Upper Uncertainty in Ratiostat.error;stat.maxfloatRad[0.45/198] Planet radius(6.3781x10+6m)phys.size.radiusfloate_Rad[0.03/45.7] Lower Uncertainty in Rad(6.3781x10+6m)stat.errorfloatE_Rad[0.02/57.3] Upper Uncertainty in Rad(6.3781x10+6m)stat.error;stat.maxfloatt0[1977/3430] Transit ephemerisdtime.epochdoublee_t0[6.2e-05/0.08] Lower Uncertainty in t0dstat.errordoubleE_t0[6.9e-05/0.05] Upper Uncertainty in t0dstat.error;stat.maxdoubleb[0.02/1] Impact parametersrc.impactParamfloate_b[0.001/0.8] Lower Uncertainty in bstat.errorfloatE_b[0.001/0.5] Upper Uncertainty in bstat.error;stat.maxfloatMajAxis[1.4/108] Semi-major axis to stellar radii ratiophys.angSize.smajAxisfloate_MajAxis[0.01/93.7] Lower Uncertainty in MajAxisstat.error;phys.angSizefloatE_MajAxis[0.01/19.9] Upper Uncertainty in MajAxisstat.error;stat.maxfloattDur[0.004/1.3] Transit durationdtime.durationfloatR*[0.12/22.5] Stellar RadiussolRadphys.size.radiusfloate_R*[0.005/4.7] Lower Uncertainty in R*solRadstat.errorfloatE_R*[0.005/6.5] Upper Uncertainty in R*solRadstat.error;stat.maxfloatM*[0.09/19.6] Stellar MasssolMassphys.massfloate_M*[0.003/8.7] Lower Uncertainty in M*solMassstat.errorfloatE_M*[0.003/19] Upper Uncertainty in M*solMassstat.error;stat.maxfloatTeff[3099/8104] Stellar Effective TemperatureKphys.temperature.effectivefloate_Teff[11/1901] Uncertainty TeffKstat.error;phys.temperature.effectivefloatlogg[1.77/5.64] Stellar Surface gravitylog(cm.s**-2)phys.gravityfloate_logg[0.01/0.6] Uncertainty logglog(cm.s**-2)stat.errorfloatFeH[-1.44/0.4] Stellar Metallicitylog(Sun)phys.abund.Fefloate_FeH[0.009/0.86] Uncertainty FeHlog(Sun)stat.errorfloatSpTStellar Spectral Classificationsrc.spTypecharVFlagVisual Inspection Classificationmeta.codecharJ/AJ/162/259/table2The CDPP measurements of each stellar targetCDPP25? CDPP RMS Value for Transit of 2.5hr(10-6)instr.precisiondoublenullableCDPP30? CDPP RMS Value for Transit of 3.0hr(10-6)instr.precisiondoublenullableCDPP40? CDPP RMS Value for Transit of 4.0hr(10-6)instr.precisiondoublenullableCDPP50? CDPP RMS Value for Transit of 5.0hr(10-6)instr.precisiondoublenullableCDPP60? CDPP RMS Value for Transit of 6.0hr(10-6)instr.precisiondoublenullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEPICEPIC identifiermeta.id;meta.mainlongprimaryCAMPCampaign identifiermeta.id;meta.datasetintCDPP10? CDPP RMS Value for Transit of 1.0hr(10-6)instr.precisiondoublenullableCDPP15? CDPP RMS Value for Transit of 1.5hr(10-6)instr.precisiondoublenullableCDPP20? CDPP RMS Value for Transit of 2.0hr(10-6)instr.precisiondoublenullableCDPP70? CDPP RMS Value for Transit of 7.0hr(10-6)instr.precisiondoublenullableCDPP80? CDPP RMS Value for Transit of 8.0hr(10-6)instr.precisiondoublenullableCDPP90? CDPP RMS Value for Transit of 9.0hr(10-6)instr.precisiondoublenullableCDPP100? CDPP RMS Value for Transit of 10.0hr(10-6)instr.precisiondoublenullableplanetIndicates that a planet has been detectedmeta.ref.urlchar