J/AJ/154/226ivo://CDS.VizieR/J/AJ/154/226doi:10.26093/cds/vizier.51540226CDSDai F.Winn J.N.Gandolfi D.Wang S.X.Teske J.K.Burt J.Albrecht S.,Barragan O.Cochran W.D.Endl M.Fridlund M.Hatzes A.P.Hirano T.,Hirsch L.A.Johnson M.C.Bo Justesen A.Livingston J.Persson C.M.,Prieto-Arranz J.Vanderburg A.Alonso R.Antoniciello G.Arriagada P.,Butler R.P.Cabrera J.Crane J.D.Cusano F.Csizmadia S.Deeg H.,Dieterich S.B.Eigmuller P.Erikson A.Everett M.E.Fukui A.Grziwa S.,Guenther E.W.Henry G.W.Howell S.B.Johnson J.A.Korth J.Kuzuhara M.,Narita N.Nespral D.Nowak G.Palle E.Patzold M.Rauer H.,Rodriguez P.M.Shectman S.A.Smith A.M.S.Thompson I.B.Van Eylen V.,Williamson M.W.Wittenmyer R.A.2018-10-01T13:25:10Z2018-08-27T13:44:32ZCDS support team

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

cds-question@unistra.frexoplanetsdwarf-starsccd-photometryradial-velocityWe report the discovery of a new ultra-short-period planet and summarize the properties of all such planets for which the mass and radius have been measured. The new planet, K2-131b, was discovered in K2 Campaign 10. It has a radius of 1.81_-0.12_^+0.16^ R_{Earth}_ and orbits a G dwarf with a period of 8.9 hr. Radial velocities obtained with Magellan/PFS and TNG/HARPS-N show evidence for stellar activity along with orbital motion. We determined the planetary mass using two different methods: (1) the "floating chunk offset" method, based only on changes in velocity observed on the same night; and (2) a Gaussian process regression based on both the radial velocity and photometric time series. The results are consistent and lead to a mass measurement of 6.5+/-1.6 M_{Earth}_ and a mean density of 6.0_-2.7_^+3.0^ g/cm^3^.2017AJ....154..226Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/154/226CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJ/787/47 : 106 Kepler ultra-short-period planets (Sanchis-Ojeda+, 2014)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/154/226https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/154/226http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/154/226https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/154/226https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/154/226http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/154/226GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap2.762881831355591e-19 3.3785437584409506e-19defaultJ/AJ/154/226/table2Swope PhotometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date; TDBdtime.epochdoubleRVFlux[0.9917/1.0042] Bessel V band relative fluxphot.flux;arith.ratiofloate_RVFlux[0.0021/0.0046] Uncertainty in RVFluxstat.errorfloatJ/AJ/154/226/table3HARPS-N ObservationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date; TDBdtime.epochdoublen_BJD[a] Note on BJD (G1)meta.notecharRV[-6892.8/-6657.92] Radial velocitym/sphys.veloc;pos.heliocentricdoublee_RV[3.27/106.24] Uncertainty in RVm/sstat.errorfloatFWHM[7.765/7.967] Full width at half maximumm/sspect.line.widthfloatBIS[-0.0087/0.3354] Bisector span of the cross-correlation functionm/sphys.velocfloatlogRHK[-4.566/-4.139] The Ca II H & K chromospheric activity index (log R'_HK_)phot.flux;arith.ratiofloate_logRHK[0.01/0.538] Uncertainty in logRHKstat.errorfloatS/N[1.5/40.7] Signal-to-noise ratio per pixel at 5500{AA}stat.snr;instr.pixelfloatJ/AJ/154/226/table4PFS ObservationsBJDBarycentric Julian Date; TDBdtime.epochdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_BJD[a] Note on BJD (G1)meta.notecharRV[-51.72/29.22] Radial velocitym/sphys.veloc;pos.heliocentricfloate_RV[3.26/10.95] Uncertainty in RVm/sstat.errorfloatSHK[0.437/0.885] The Ca II H & K chromospheric activity indicator S_HK_phot.flux;arith.ratiofloatJ/AJ/154/226/table1AIT PhotometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date; TDBdtime.epochdoubleDRmag[-0.95431/-0.92411] Differential Cousins R band magnitudemagphot.mag;em.opt.R;arith.diffdoublee_DRmag[0.00022/0.00752] Uncertainty in DRmagmagstat.error;phot.magdouble