J/AJ/160/239ivo://CDS.VizieR/J/AJ/160/239doi:10.26093/cds/vizier.51600239CDSBouma L.G.Hartman J.D.Brahm R.Evans P.Collins K.A.Zhou G.,Sarkis P.Quinn S.N.de Leon J.Livingston J.Bergmann C.Stassun K.G.,Bhatti W.Winn J.N.Bakos G.A.Abe L.Crouzet N.Dransfield G.,Guillot T.Marie-Sainte W.Mekarnia D.Triaud A.H.M.J.Tinney C.G.,Henning T.Espinoza N.Jordan A.Barbieri M.Nandakumar S.Trifonov T.,Vines J.I.Vuckovic M.Ziegler C.Law N.Mann A.W.Ricker G.R.,Vanderspek R.Seager S.Jenkins J.M.Burke C.J.Dragomir D.,Levine A.M.Quintana E.V.Rodriguez J.E.Smith J.C.Wohler B.2021-09-28T09:42:33Z2021-02-11T07:58:51ZCDS support team

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

cds-question@unistra.frexoplanetsg-starsinfrared-photometryvisible-astronomyphotometryspectroscopyradial-velocityWe report the discovery of TOI837b and its validation as a transiting planet. We characterize the system using data from the NASA Transiting Exoplanet Survey Satellite mission, the ESA Gaia mission, ground-based photometry from El Sauce and ASTEP400, and spectroscopy from CHIRON, FEROS, and Veloce. We find that TOI837 is a T=9.9mag G0/F9 dwarf in the southern open cluster IC2602. The star and planet are therefore 35_-5_^+11^ million years old. Combining the transit photometry with a prior on the stellar parameters derived from the cluster color-magnitude diagram, we find that the planet has an orbital period of 8.3days and is slightly smaller than Jupiter (R_p_=0.77_-0.07_^+0.09^R_Jup_). From radial velocity monitoring, we limit M_p_sin(i) to less than 1.20M_Jup_(3{sigma}). The transits either graze or nearly graze the stellar limb. Grazing transits are a cause for concern, as they are often indicative of astrophysical false-positive scenarios. Our follow-up data show that such scenarios are unlikely. Our combined multicolor photometry, high-resolution imaging, and radial velocities rule out hierarchical eclipsing binary scenarios. Background eclipsing binary scenarios, though limited by speckle imaging, remain a 0.2% possibility. TOI837b is therefore a validated adolescent exoplanet. The planetary nature of the system can be confirmed or refuted through observations of the stellar obliquity and the planetary mass. Such observations may also improve our understanding of how the physical and orbital properties of exoplanets change in time.2020AJ....160..239Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/160/239CatalogResearchIsServedByTAP VizieR generic servicerelated-toI/337 : Gaia DR1 (Gaia Collaboration, 2016)I/345 : Gaia DR2 (Gaia Collaboration, 2018)IV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)J/AJ/117/354 : OB associations from Hipparcos (de Zeeuw+, 1999)J/other/ARA+A/42.685 : Young stars near the Sun (Zuckerman+, 2004)J/A+A/438/1163 : Catalogue of Open Cluster Data (COCD) (Kharchenko+,2005)J/AJ/129/2856 : Variable stars in NGC 6791 (Mochejska+, 2005)J/ApJ/687/1264 : Age estimation for solar-type dwarfs (Mamajek+, 2008)J/AJ/135/907 : Variables Praesepe identified with KELT (Pepper+, 2008)J/ApJ/720/1118 : i-band photometry of HAT-P-16 (Buchhave+, 2010)J/ApJS/190/1 : A survey of stellar families (Raghavan+, 2010)J/A+A/537/A146 : Stellar models rot. 0.8<M<120, Z=0.014 (Ekstrom+, 2012)J/ApJ/756/L33 : RVs of 2 hot Jupiters in Praesepe (Quinn+, 2012)J/A+A/553/A49 : WASP-19b secondary eclipses (Abe+, 2013)J/A+A/558/A53 : Milky Way survey star clusters. II. (Kharchenko+, 2013)J/ApJ/779/188 : Spectra of nearby late K and M Kepler stars (Mann+,2013)J/A+A/556/A15 : Effective temperature scale M dwarfs (Rajpurohit+, 2013)J/A+A/583/A73 : Color-period diagram for M48 (NGC2548) (Barnes+, 2015)J/ApJ/804/146 : Atmospheric param. for nearby B-F stars (David+, 2015)J/ApJ/809/77 : Transiting Exoplanet Survey Satellite (Sullivan+, 2015)J/A+A/588/A118 : Pr0211 RVs, photom. & activity indexes (Malavolta+,2016)J/ApJ/822/86 : False positive prob. for Q1-Q17 DR24 KOIs (Morton+,2016)J/A+A/585/A150 : On the metallicity of open clusters.III. (Netopil+,2016)J/AJ/152/113 : Pleiades members K2 LCs. I. Periods (Rebull+, 2016)J/A+A/602/A107 : 231 transit. planets eccentricity & mass (Bonomo+, 2017)J/A+A/603/A85 : M67 stars radial velocities (Brucalassi+, 2017)J/A+A/600/A30 : Limb-darkening for TESS satellite (Claret, 2017)J/ApJ/842/83 : Praesepe members Prot from K2 LCs (Douglas+, 2017)J/AJ/154/109 : California-Kepler SurveyIII. Planet radii (Fulton+,2017)J/AJ/153/257 : Comoving stars in Gaia DR1 (Oh+, 2017)J/AJ/153/136 : Planets and host stars with Gaia plxs (Stassun+, 2017)J/ApJ/835/61 : Chromospherically active stars RAVE. II. (Zerjal+, 2017)J/AJ/156/18 : APOGEE DR14: companions of stars (Price-Whelan+, 2018)J/ApJ/855/115 : Li abundances of KOIs from CKS spectra (Berger+, 2018)J/A+A/618/A93 : GaiaDR2 open clusters in Milky Way (Cantat-Gaudin+,2018)J/A+A/619/A116 : New variables & 2 delta Scuti pulsations (Crouzet+,2018)J/AJ/155/89 : California-Kepler Survey. IV. Planets (Petigura+, 2018)J/A+A/612/A99 : Gaia-ESO Survey open star cluster fields (Randich+,2018)J/AJ/156/102 : The TESS Input Catalog and Candidate (Stassun+, 2018)J/A+A/623/A108 : Age of 269 GDR2 open clusters (Bossini+, 2019)J/ApJS/245/13 : CDIPS. I. LCs from TESS sectors 6 and 7 (Bouma+, 2019)J/AJ/158/45 : TESS light curve & RVs for HD1397 (Brahm+, 2019)J/ApJ/879/49 : Prot for 171 Gaia members of NGC6811 (Curtis+, 2019)J/AJ/158/77 : Cand. & memb. of Pisces-Eridanus stream (Curtis+, 2019)J/A+A/623/A112 : The Sco OB2 population from GaiaDR2 data (Damiani+,2019)J/ApJ/879/100 : K2 Prot for Hyades & Praesepe members (Douglas+, 2019)J/AJ/158/122 : Structure & star formation history of MW (Kounkel+,2019)J/A+A/634/A34 : Complete line list and solar values (Baratella+, 2020)J/AJ/160/108 : Gaia-Kepler stellar properties catalogII (Berger+, 2020)J/A+A/642/A133 : V830 Tau VI light curves and RV curves (Damasso+, 2020)J/AJ/159/145 : RVs and opt. photom. host star TOI-677 (Jordan+, 2020)J/MNRAS/495/4924 : Exoplanets in Southern open clusters (Nardiello+, 2020)J/AJ/159/273 : Taurus members & nonmembers with K2 data (Rebull+, 2020)J/AJ/160/192 : Photometry and RVs of K2-25b with HPF (Stefansson+,2020)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/160/239https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/160/239http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/160/239https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/160/239https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/160/239http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/160/239GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/AJ/160/239/table1Ground-based TOI 837 photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJD[1940/2024] Exposure midtime; BJD,TBD-2457000dtime.epochdoubleflux[0.986945/1.012303] Relative fluxphot.flux.densitydoublee_flux[0.001406/0.005692] Uncertainty in fluxstat.error;phot.fluxdoubleInstInstrument code (1)meta.code;instrcharJ/AJ/160/239/table2TOI 837 radial velocitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJD[8669/8933] Exposure midtime; BJD,TBD-2450000dtime.epochdoubleRVel[-196/240] Radial Velocitym/sphys.veloc;pos.heliocentricfloate_RVel[21/726] Error on RVelm/sstat.error;spect.dopplerVelocfloatInstInstrument used (CHIRON, FEROS, or Veloce)instr.setupchar