J/ApJ/710/1724ivo://CDS.VizieR/J/ApJ/710/1724doi:10.26093/cds/vizier.17101724CDSBakos G.A.Torres G.Pal A.Hartman J.Kovacs G.Noyes R.W.,Latham D.W.Sasselov D.D.Sipocz B.Esquerdo G.A.Fischer D.A.,Johnson J.A.Marcy G.W.Butler R.P.Isaacson H.Howard A.Vogt S.,Kovacs G.Fernandez J.Moor A.Stefanik R.P.Lazar J.Papp I.Sari P.2017-06-20T13:16:03Z2012-04-18T09:35:49ZCDS support team

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

cds-question@unistra.frphotometrysolar-system-planetsradial-velocityk-starsmultiple-starsWe report on the discovery of HAT-P-11b, the smallest radius transiting extrasolar planet (TEP) discovered from the ground, and the first hot Neptune discovered to date by transit searches. HAT-P-11b orbits the bright (V=9.587) and metal rich ([Fe/H]=+0.31+/-0.05) K4 dwarf star GSC 03561-02092 with P=4.8878162+/-0.0000071 days and produces a transit signal with depth of 4.2mmag, the shallowest found by transit searches that is due to a confirmed planet. We present a global analysis of the available photometric and radial velocity (RV) data that result in stellar and planetary parameters, with simultaneous treatment of systematic variations. HAT-P-11b orbits in an eccentric orbit with e=0.198+/-0.046 and {omega}=355.2{deg}+/-17.3{deg}, causing a reflex motion of its parent star with amplitude 11.6+/-1.2m/s, a challenging detection due to the high level of chromospheric activity of the parent star. Our ephemeris for the transit events is T_c_=2454605.89132+/-0.00032 (BJD), with duration 0.0957+/-0.0012 days, and secondary eclipse epoch of 2454608.96+/-0.15 days (BJD).2010ApJ...710.1724Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/710/1724CatalogResearchIsServedByTAP VizieR generic servicerelated-toV/133 : Kepler Input Catalog (Kepler Mission Team, 2009)J/MNRAS/411/L46 : Exoplanet magnetic fields (Vidotto+, 2011)J/MNRAS/411/435 : Stellar parameters and extinction (Bailer-Jones, 2011)http://www.exoplanet.eu/catalog-transit.php : Extra-solar Planets Cataloghttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/710/1724https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/710/1724http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/710/1724https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/710/1724https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/710/1724http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/710/1724GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJ/710/1724/table2Follow-up photometry for HAT-P-11InstInstrument used in observation (3)instr.setup;obscharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Datedtime.epochdoublemagBest detrended magnitude (1)magphot.magdoublee_magEstimated error in Bmagmagphot.magdoubleRawmagMagnitude before detrending; raw magnitudemagphot.magdoubleFiltFilter used in observation (I, r, z)instr.setup;obscharTNumTransit number (2)meta.number;time.periodintJ/ApJ/710/1724/table3Relative radial velocity measurements of HAT-P-11recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Datedtime.epochdoubleRV? Radial velocitym/sphys.veloc;pos.heliocentricfloatnullablee_RV? The 1{sigma} error in RVm/sstat.errorfloatnullableO-C? The (O-C) valuem/sstat.fit.residualfloatnullableBSThe bisector spanm/sphys.velocfloate_BSThe 1{sigma} error in BSm/sstat.errorfloatSharpStellar profile sharpness parameterstat.fit.paramfloat