J/AJ/150/12ivo://CDS.VizieR/J/AJ/150/12doi:10.26093/cds/vizier.51500012CDSBieryla A.Collins K.Beatty T.G.Eastman J.Siverd R.J.Pepper J.,Gaudi B.S.Stassun K.G.Canas C.Latham D.W.Buchhave L.A.,Sanchis-Ojeda R.Winn J.N.Jensen E.L.N.Kielkopf J.F.McLeod K.K.,Gregorio J.Colon K.D.Street R.Ross R.Penny M.Mellon S.N.,Oberst T.E.Fulton B.J.Wang J.Berlind P.Calkins M.L.Esquerdo G.A.,DePoy D.L.Gould A.Marshall J.Pogge R.Trueblood M.Trueblood P.2017-06-26T11:50:40Z2015-07-23T08:28:21ZCDS support team

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

cds-question@unistra.frsolar-system-planetsmultiple-starsf-starsradial-velocityWe report the discovery of KELT-7b, a transiting hot Jupiter with a mass of 1.28+/-0.18M_J_, radius of 1.533^+0.046^_-0.047_R_J_, and an orbital period of 2.7347749+/-0.0000039days. The bright host star (HD33643; KELT-7) is an F-star with V=8.54, T_eff_=6789^+50^_-49_K, [Fe/H]=0.139^+0.075^_-0.081_, and logg=4.149+/-0.019. It has a mass of 1.535^+0.066^_-0.054_M_{Sun}_, a radius of 1.732^+0.043^_-0.045_R_{Sun}_, and is the fifth most massive, fifth hottest, and the ninth brightest star known to host a transiting planet. It is also the brightest star around which Kilodegree Extremely Little Telescope (KELT) has discovered a transiting planet. Thus, KELT-7b is an ideal target for detailed characterization given its relatively low surface gravity, high equilibrium temperature, and bright host star. The rapid rotation of the star (73+/-0.5km/s) results in a Rossiter-McLaughlin effect with an unusually large amplitude of several hundred m/s. We find that the orbit normal of the planet is likely to be well-aligned with the stellar spin axis, with a projected spin-orbit alignment of {lambda}=9.7{deg}+/-5.2{deg}. This is currently the second most rapidly rotating star to have a reflex signal (and thus mass determination) due to a planetary companion measured.2015AJ....150...12Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/150/12CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/AJ/149/149 : Photometry and spectroscopy of HAT-P-54 (Bakos+, 2015)J/AJ/147/84 : Photometry and spectroscopy of HAT-P-49 (Bieryla+, 2014)J/ApJ/761/123 : KELT-1 photometry and spectroscopy follow-up (Siverd+, 2012)J/ApJ/757/18 : RVs for 16 hot Jupiter host stars (Albrecht+, 2012)J/ApJ/720/1118 : i-band photometry of HAT-P-16 (Buchhave+, 2010)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/150/12https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/150/12http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/150/12https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/150/12https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/150/12http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/150/12GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/AJ/150/12/table1Radial velocity (RV) observations of KELT-7recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date (BJD_TDB_)dtime.epochdoubleRV[-610/265] Relative radial velocitym/sphys.veloc;arith.diffinte_RV[48/174] Uncertainty in RVm/sstat.errorintBS[-262/336] Bisector spanm/sphys.velocinte_BS[37/209] Uncertainty in BSm/sstat.errorintS/N[68/298] Signal-to-Noise per resolution element (1)stat.snr;pos.angResolutionfloat