J/AJ/160/111ivo://CDS.VizieR/J/AJ/160/111doi:10.26093/cds/vizier.51600111CDSMartinez R.R.Gaudi B.S.Rodriguez J.E.Zhou G.Labadie-Bartz J.,Quinn S.N.Penev K.Tan T.-G.Latham D.W.Paredes L.A.Kielkopf J.F.,Addison B.Wright D.J.Teske J.Howell S.B.Ciardi D.Ziegler C.,Stassun K.G.Johnson M.C.Eastman J.D.Siverd R.J.Beatty T.G.,Bouma L.Bedding T.Pepper J.Winn J.Lund M.B.Villanueva S.,Stevens D.J.Jensen E.L.N.Kilby C.Crane J.D.Tokovinin A.,Everett M.E.Tinney C.G.Fausnaugh M.Cohen D.H.Bayliss D.Bieryla A.,Cargile P.A.Collins K.A.Conti D.M.Colon K.D.Curtis I.A.Depoy D.L.,Evans P.Feliz D.L.Gregorio J.Rothenberg J.James D.J.Joner M.D.,Kuhn R.B.Manner M.Khakpash S.Marshall J.L.McLeod K.K.Penny M.T.,Reed P.A.Relles H.M.Stephens D.C.Stockdale C.Trueblood M.,Trueblood P.Yao X.Zambelli R.Vanderspek R.Seager S.Jenkins J.M.,Henry T.J.James H.-S.Jao W.-C.Wang S.X.Butler P.Thompson I.,Shectman S.Wittenmyer R.Bowler B.P.Horner J.Kane S.R.Mengel M.W.,Morton T.D.Okumura J.Plavchan P.Zhang H.Scott N.J.Matson R.A.,Mann A.W.Dragomir D.Gunther M.Ting E.B.Glidden A.Quintana E.V.2021-03-26T06:50:33Z2020-11-06T07:08:17ZCDS support team

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

cds-question@unistra.frexoplanetsa-starsearly-type-starsinfrared-photometryvisible-astronomyphotometryWe present the discoveries of KELT-25b (TIC 65412605, TOI-626.01) and KELT-26b (TIC 160708862, TOI-1337.01), two transiting companions orbiting relatively bright, early A stars. The transit signals were initially detected by the KELT survey and subsequently confirmed by Transiting Exoplanet Survey Satellite (TESS) photometry. KELT-25b is on a 4.40day orbit around the V=9.66 star CD-245016 (Teff=8280_-180_^+440^K, M{star}=2.18_-0.11_^+0.12^M{sun}), while KELT-26b is on a 3.34day orbit around the V=9.95 star HD134004 (Teff=8640_-240_^+500^K, M{star}=1.93_-0.16_^+0.14^M{sun}), which is likely an Am star. We have confirmed the substellar nature of both companions through detailed characterization of each system using ground-based and TESS photometry, radial velocity measurements, Doppler tomography, and high-resolution imaging. For KELT-25, we determine a companion radius of RP=1.64_-0.043_^+0.039^RJ and a 3{sigma} upper limit on the companion's mass of ~64MJ. For KELT-26b, we infer a planetary mass and radius of MP=1.41_-0.51_^+0.43^M_J_ and RP=1.94_-0.058_^+0.060^RJ. From Doppler tomographic observations, we find KELT-26b to reside in a highly misaligned orbit. This conclusion is weakly corroborated by a subtle asymmetry in the transit light curve from the TESS data. KELT-25b appears to be in a well-aligned, prograde orbit, and the system is likely a member of the cluster Theia449.2020AJ....160..111Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/160/111CatalogResearchIsServedByTAP VizieR generic servicerelated-toI/259 : The Tycho-2 Catalogue (Hog+ 2000)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)I/340 : UCAC5 Catalogue (Zacharias+ 2017)I/345 : Gaia DR2 (Gaia Collaboration, 2018)IV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)J/A+A/410/527 : Abundances in the Galactic disk (Bensby+, 2003)J/ApJ/640/1051 : 25pc sample of Sun-like stars (Grether+, 2006)J/A+A/463/671 : Rotational velocities of A-type stars. III. (Royer+,2007)J/ApJ/720/1118 : i-band photometry of HAT-P-16 (Buchhave+, 2010)J/A+A/516/A95 : Photometry and spectroscopy of HD 80606b (Hebrard+, 2010)J/AJ/142/19 : Speckle observations of KOI (Howell+, 2011)J/other/Nat/486.375 : Stellar parameters of KOI stars (Buchhave+, 2012)J/ApJ/756/L33 : RVs of 2 hot Jupiters in Praesepe (Quinn+, 2012)J/ApJ/761/123 : KELT-1 photometry and spectro. follow-up (Siverd+, 2012)J/A+A/537/A120 : Rotational velocities of A-type stars. IV. (Zorec+, 2012)J/AJ/150/12 : Radial velocity of HD 33643 (Bieryla+, 2015)J/AJ/150/197 : Photometry and spectroscopy of HAT-P-57 (Hartman+, 2015)J/AJ/152/136 : Follow-up photometry & spectroscopy KELT-17 (Zhou+, 2016)J/A+A/606/A73 : MASCARA-1 b light curves and spectra (Talens+, 2017)J/ApJS/239/2 : Simulated exoplanets from TESS list (Barclay+, 2018)J/AJ/156/234 : KELT transit false positive cat. for TESS (Collins+,2018)J/AJ/155/120 : RV variability of K-giant {gamma}Draconis (Hatzes+, 2018)J/A+A/612/A57 : MASCARA-2 b light curves and spectra (Talens+, 2018)J/AJ/158/45 : TESS light curve & RVs for HD1397 (Brahm+, 2019)J/A+A/627/A165 : KELT-9 b atmos. model transm. spectra (Hoeijmakers+,2019)J/AJ/158/113 : Kepler-13AB aperture photometry (Howell+, 2019)J/AJ/158/122 : Local structure & star formation of MW (Kounkel+, 2019)J/AJ/157/211 : Unresolved binaries TESS speckle imaging (Matson+, 2019)J/AJ/158/197 : Radial velocities & LCs of KELT-24 (Rodriguez+, 2019)J/AJ/157/191 : LC & radial velocities for TOI-172 (Rodriguez+, 2019)J/AJ/157/31 : Differential photometry & RVs of HATS-70 (Zhou+, 2019)J/AJ/158/141 : Diff photom. & RVs of HAT-P-69 & HAT-P-70 (Zhou+, 2019)J/AJ/159/19 : SOAR TESS survey. I. (Ziegler+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/160/111https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/160/111http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/160/111https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/160/111https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/160/111http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/160/111GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/AJ/160/111/table2Follow-up photometric observations of KELT-25 b and KELT-26 bObsIDObservatory (1)meta.id;instr.obstycharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTargetTarget identificationmeta.id;meta.maincharObs[2016/2019] UT year of observationtime.epoch;obsDiam[0.1/0.69] Diametermphys.size;instr.telfloatFiltFilter usedinstr.setup;instr.filtercharFOVField of viewinstr.fovcharScale[0.4/21] Pixel scalearcsecinstr.scalefloatTexp[30/1800] Exposure timestime.duration;obs.exposureintJ/AJ/160/111/fig4KELT-FUN light curve followup of KELT-25 in Rc bandrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJD[2458502/2458503] Barycentric Julian Datedtime.epochdoubleFlux[0.987/1.02] Flux, relative from Rc band photometryphot.flux;arith.ratiodoublee_Flux[0.001/0.003] Uncertainty in Fluxstat.error;phot.fluxdoubleJ/AJ/160/111/fig5iKELT-FUN light curve followup of KELT-26 in I bandrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJD[2457595/2457597] Barycentric Julian Datedtime.epochdoubleFlux[0.974/1.01] Flux, relative from I band photometryphot.flux;arith.ratiodoublee_Flux[0.001/0.003] Uncertainty in Fluxstat.error;phot.fluxdoubleJ/AJ/160/111/fig5rKELT-FUN light curve followup of KELT-26 in r' bandFluxT1[0.982/1.01] Normalized Fluxphot.flux;arith.ratiodoublee_FluxT1[0.0005/0.0006] Uncertainty in Fluxstat.errordoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJD[2458198/2458199] Barycentric Julian Date, TBDdtime.epochdoubleFluxT7[0.952/0.962] Normalized Flux in Nearby Starphot.flux;arith.ratiodoublee_FluxT7[0.0001/0.0002] Uncertainty Flux in Nearby Starstat.errordoubleCounts[10510984/14442405] Total countsctphot.countdoubleAirmass[1.03/1.83] Airmassobs.airMassdoubleJD-UTC[0.02/0.23] Correction to UTCdtime.epochdouble