J/AJ/156/277ivo://CDS.VizieR/J/AJ/156/277doi:10.26093/cds/vizier.51560277CDSLivingston J.H.Crossfield I.J.M.Petigura E.A.Gonzales E.J.,Ciardi D.R.Beichman C.A.Christiansen J.L.Dressing C.D.Henning T.,Howard A.W.Isaacson H.Fulton B.J.Kosiarek M.Schlieder J.E.,Sinukoff E.Tamura M.2019-05-10T12:21:08Z2019-05-09T07:41:01ZCDS support team

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

cds-question@unistra.frmultiple-starsexoplanetseffective-temperaturemetallicitystellar-massesstellar-radiistellar-distanceWe present a uniform analysis of 155 candidates from the second year of NASA's K2 mission (Campaigns 5-8), yielding 60 statistically validated planets spanning a range of properties with median values of R_p_=2.5 R_{Earth}_, P=7.1 days, T_eq_=811 K, and J=11.3 mag. The sample includes 24 planets in 11 multiplanetary systems, as well as 18 false positives and 77 remaining planet candidates. Of particular interest are 18 planets smaller than 2 R_{Earth}_, five orbiting stars brighter than J=10 mag, and a system of four small planets orbiting the solar-type star EPIC 212157262. We compute planetary transit parameters and false-positive probabilities using a robust statistical framework and present a complete analysis incorporating the results of an intensive campaign of high-resolution imaging and spectroscopic observations. This work brings the K2 yield to over 360 planets, and by extrapolation, we expect that K2 will have discovered ~600 planets before the expected depletion of its onboard fuel in late 2018.2018AJ....156..277Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/156/277CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)II/311 : WISE All-Sky Data Release (Cutri+ 2012)II/349 : The Pan-STARRS release 1 (PS1) Survey - DR1 (Chambers+, 2016)IV/34 : K2 Ecliptic Plane Input Catalog (EPIC) (Huber+, 2017)I/345 : Gaia DR2 (Gaia Collaboration, 2018)J/ApJS/197/8 : Kepler's candidate multiple transiting planetsJ/ApJ/784/45 : Kepler's multiple planet candidates. III. (Rowe+, 2014)J/ApJ/809/25 : Stellar and planet properties for K2 candidates (Montet+, 2015)J/ApJS/222/14 : Planetary candidates from 1st yr K2 mission (Vanderburg+, 2016)J/ApJS/226/7 : Planet candidates discovered using K2's 1st yrJ/AJ/154/207 : K2 planetary systems orbiting low-mass stars (Dressing+, 2017)J/ApJ/836/167 : K2 planetary syst. around low-mass stars. I. (Dressing+, 2017)J/AJ/155/21 : Planet candidates from K2 campaigns 5-8 (Petigura+, 2018)J/AJ/155/136 : Planets orbiting bright stars in K2 campaigns 0-10J/AJ/156/78 : 44 validated planets from K2 Campaign 10 (Livingston+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/156/277https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/156/277http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/156/277https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/156/277https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/156/277http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/156/277GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/156/277/table1 (Target stars and parameters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/156/277/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/156/277/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/156/277/table1?GETtext/xml+votable180.050000true126.463933110.24696810.0055555555555555565/6406 6431 6/4247 4263 4268 4269 4271 4273 4276 4279 4280 4281 4285 4296 4303 4320 4322 4346 4521 4624 4629 4632 4659 4660 4677 4683 4687 4688 4698 4700 4704 4716 4720 4729 4730 4731 4733 4800 4816 4867 4875 4897 18003 18012 18039 18044 18115 18132 18139 18147 18150 18163 18208 18223 18225 18313 18314 18322 18329 18335 18336 18338 18345 18350 18361 18362 25604 25610 25614 25648 25673 25675 25677 25696 25697 25698 25721 25735 25747 25750 25756 25794 25795 25800 25810 25829 28941 28943 28953 28996 28999 29002 29009 29010 29012 29017 29022 29031 29045 29046 29048 44779 48028 48029 48051 48067 48089 48099 48111 48114 48121https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/156/277?format=asciidefaultJ/AJ/156/277/table1Target stars and parametersSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEPICEPIC identifiermeta.id;meta.maincharPlPlanet candidate(s) in table23meta.ref.urlcharTeff[3398/6921] Effective temperatureKphys.temperature.effectiveinte_Teff[26/484] Uncertainty in TeffKstat.error;phys.temperature.effectiveintlog(g)[0.55/4.92] Log surface gravitylog(cm.s**-2)phys.gravityfloate_log(g)[0/0.16] Uncertainty in log(g)log(cm.s**-2)stat.errorfloat[Fe/H][-0.54/0.39] Metallicitylog(Sun)phys.abund.Zfloate_[Fe/H][0.02/0.2] Uncertainty in [Fe/H]log(Sun)stat.error;phys.abund.FefloatM*[0.33/2.29] Stellar masssolMassphys.massfloate_M*[0.01/0.18] Uncertainty in M*solMassstat.errorfloatR*[0.33/133.86] Stellar radiussolRadphys.size.radiusfloate_R*[0/14.8] Uncertainty in R*solRadstat.errorfloatDist[34.62/2959.2] Distancepcpos.distance;pos.heliocentricfloate_Dist[0.09/393.96] Uncertainty in Distpcstat.errorfloatProvProvenance of basic parameters (1)meta.codecharGOK2 General Observer (GO) program(s)meta.code;obschar_RAPosition from the K2 Ecliptic Plane Input Catalog (EPIC) (Huber+, 2017, Cat. IV/34) (right ascension part)degpos.eq.ra;meta.main_DEPosition from the K2 Ecliptic Plane Input Catalog (EPIC) (Huber+, 2017, Cat. IV/34) (declination part)degpos.eq.dec;meta.mainJ/AJ/156/277/table23Candidate parameters, dispositions (table 2) and vespa likelihoods (table 3)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCandCandidate identifiermeta.id;meta.maincharField[5/8] K2 field numbermeta.id;obs.fieldintNamePlanet namemeta.idcharPer[0.515013/30.951524] Perioddtime.perioddoubleE_Per[1e-06/0.005554] Upper uncertainty in Perdstat.error;stat.maxdoublee_Per[1e-06/0.005201] Lower uncertainty in Perdstat.error;stat.mindoubleT0[2307.47617/2580.72036] Epoch (BKJD)dtime.epochdoubleE_T0[4e-05/0.01119] Upper uncertainty in T0dstat.error;stat.maxdoublee_T0[4e-05/0.009] Lower uncertainty in TOdstat.error;stat.mindoubleRp/R*[1/59.71] Planet to stellar radius ratiophys.size;arith.ratiofloatE_Rp/R*[0.03/20.01] Upper uncertainty in Rp/R*stat.error;stat.maxfloate_Rp/R*[0.02/13.53] Lower uncertainty in Rp/R*stat.error;stat.minfloata/R*[1.32/139.64] Separation to stellar radius ratiopos.distancefloatE_a/R*[0.01/19.51] Upper uncertainty in a/R*stat.error;stat.maxfloate_a/R*[0.01/20.62] Lower uncertainty in a/R*stat.error;stat.minfloatb[0.09/1.17] Impact parametersrc.impactParamfloatE_b[0.01/0.36] Upper uncertainty in bstat.error;stat.maxfloate_b[0.01/0.48] Lower uncertainty in bstat.error;stat.minfloatRp[0.86/1904.12] Planet radius(6.3781x10+6m)phys.size.radiusfloate_Rp[0.06/786.22] Uncertainty in Rp(6.3781x10+6m)stat.errorfloata[1.14/20.34] SeparationAUpos.distance;src.orbitalfloatE_a[0.01/0.43] Upper uncertainty in aAUstat.error;stat.maxfloate_a[0.01/0.55] Lower uncertainty in aAUstat.error;stat.minfloatTeq[318/6147] Equilibrium temperatureKphys.temperatureintE_Teq[5/1882] Upper uncertainty in TeqKstat.error;stat.maxinte_Teq[5/2174] Lower uncertainty in TeqKstat.error;stat.minintrho*[0.026/133.557] Stellar density in solar unitsSunphys.densityfloatE_rho*[0.001/117.237] Upper uncertainty in rho*Sunstat.error;stat.maxfloate_rho*[0.001/73.087] Lower uncertainty in rho*Sunstat.error;stat.minfloatFPP2[0/1] False-positive probabilitystat.fit.goodnessdoubleDispDisposition (1)meta.codecharNoteAdditional note(s) (2)meta.notecharLbebLikelihood that the signal is due to a background eclipsing binary at the measured periodstat.likelihoodcharLbebP2Likelihood that the signal is due to a background eclipsing binary at twice the measured periodstat.likelihoodcharLebLikelihood that the signal is due to an eclipsing binary at the measured periodstat.likelihoodcharLebP2Likelihood that the signal is due to an eclipsing binary at twice the measured periodstat.likelihoodcharLhebLikelihood that the signal is due to a hierarchical star system with an eclipsing component at the measured periodstat.likelihoodcharLhebP2Likelihood that the signal is due to a hierarchical star system with an eclipsing component at twice the measured periodstat.likelihoodcharLplLikelihood that the signal is due to a planetstat.likelihoodcharFPP3[0/1] False-positive probabilitystat.fit.goodnessdoubleJ/AJ/156/277/table4Nearby bright AO sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEPIC[211413752/220555384] EPIC identifier of the primary (1)meta.id;meta.mainlongrho[0.2/13.55] Separation {rho}arcsecpos.angDistancefloatDKpmag[0.1/6.7] Differential Kepler magnitudemagphot.mag;arith.difffloatgamma1[1/1.91] Dilution factor assuming the transit signal comes from the primary star {gamma}_pri_stat.fit.paramfloatgamma2[2.1/479.63] Dilution factor assuming the transit signal comes from the secondary star {gamma}_sec_stat.fit.paramfloatJ/AJ/156/277/table5Improvement in orbital period estimates from joint analysis of C5 and C16 light curves for a subset of candidatesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCand[211490999.01/212164470.02] Candidate identifiermeta.id;meta.maindoublePC5[2.21928/30.9516] Orbital period estimate from analysis of C5 light curvesdtime.perioddoublee_PC5[7.9e-06/0.00332025] Lower limit uncertainty in PC5dstat.error;stat.mindoubleE_PC5[7.94e-06/0.00362482] Upper limit uncertainty in PC5dstat.error;stat.maxdoublePC5+C16[2.2192/30.9554] Orbital period estimate from joint analysis of C5 and C16 light curvesdtime.perioddoublee_PC5+C16[6.3e-07/0.00027763] Lower limit uncertainty in PC5+C16dstat.error;stat.mindoubleE_PC5+C16[6.3e-07/0.00021038] Upper limit uncertainty in PC5+C16dstat.error;stat.maxdoubleDprec[10/41] Factor by which the precision of the period estimate is improved by C5+C16, as compared to C5-only {Delta}_prec_stat.fit.paramint