J/AJ/162/292ivo://CDS.VizieR/J/AJ/162/292doi:10.26093/cds/vizier.51620292CDSAddison B.C.Knudstrup E.Wong I.Hebrard G.Dorval P.Snellen I.,Albrecht S.Bello-arufe A.Almenara J.-M.Boisse I.Bonfils X.,Dalal S.Demangeon O.D.S.Hoyer S.Kiefer F.Santos N.C.Nowak G.,Luque R.Stangret M.Palle E.Tronsgaard R.Antoci V.Buchhave L.A.,Gunther M.N.Daylan T.Murgas F.Parviainen H.Esparza-borges E.,Crouzet N.Narita N.Fukui A.Kawauchi K.Watanabe N.Rabus M.,Johnson M.C.Otten G.P.P.L.Talens G.J.Cabot S.H.C.Fischer D.A.,Grundahl F.Fredslund Andersen M.Jessen-hansen J.Palle P.Shporer A.,Ciardi D.R.Clark J.T.Wittenmyer R.A.Wright D.J.Horner J.,Collins K.A.Jensen E.L.N.Kielkopf J.F.Schwarz R.P.Srdoc G.,Yilmaz M.Senavci H.V.Diamond B.Harbeck D.Komacek T.D.Smith J.C.,Wang S.Eastman J.D.Stassun K.G.Latham D.W.Vanderspek R.Seager S.,Winn J.N.Jenkins J.M.Louie D.R.Bouma L.G.Twicken J.D.Levine A.M.,Mclean B.2022-09-30T21:56:55Z2022-03-24T07:26:36ZCDS support team

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

cds-question@unistra.frexoplanetsam-starsinfrared-photometryvisible-astronomyWide-band photometryspectroscopyradial-velocityWe present the discovery of a highly irradiated and moderately inflated ultrahot Jupiter, TOI-1431b/MASCARA-5 b (HD201033b), first detected by NASA's Transiting Exoplanet Survey Satellite mission (TESS) and the Multi-site All-Sky Camera (MASCARA). The signal was established to be of planetary origin through radial velocity measurements obtained using SONG, SOPHIE, FIES, NRES, and EXPRES, which show a reflex motion of K=294.1{+/-}1.1m/s. A joint analysis of the TESS and ground-based photometry and radial velocity measurements reveals that TOI-1431b has a mass of M_p_=3.12{+/-}0.18M_J_ (990{+/-}60M{Earth}), an inflated radius of R_p_=1.49{+/-}0.05R_J_ (16.7{+/-}0.6R{Earth}), and an orbital period of P=2.650237{+/-}0.000003 days. Analysis of the spectral energy distribution of the host star reveals that the planet orbits a bright (V=8.049mag) and young (0.29_-0.19_^+0.32^Gyr) Am type star with T_eff_=7690_-250_^+400^K, resulting in a highly irradiated planet with an incident flux of <F>=7.24_-0.64_^+0.68^x10^9^erg/s/cm (5300_-470_^+500^S{Earth}) and an equilibrium temperature of T_eq_=2370{+/-}70K. TESS photometry also reveals a secondary eclipse with a depth of 127_-5_^+4^ppm as well as the full phase curve of the planet's thermal emission in the red-optical. This has allowed us to measure the dayside and nightside temperature of its atmosphere as T_day_=3004{+/-}64K and T_night_=2583{+/-}63K, the second hottest measured nightside temperature. The planet's low day/night temperature contrast (~420K) suggests very efficient heat transport between the dayside and nightside hemispheres. Given the host star brightness and estimated secondary eclipse depth of ~1000ppm in the K band, the secondary eclipse is potentially detectable at near-IR wavelengths with ground-based facilities, and the planet is ideal for intensive atmospheric characterization through transmission and emission spectroscopy from space missions such as the James Webb Space Telescope and the Atmospheric Remote-sensing Infrared Exoplanet Large-survey.2021AJ....162..292Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/162/292CatalogResearchIsServedByTAP VizieR generic servicerelated-toIII/162 : General Catalogue of Ap and Am stars (Renson+ 1991)I/259 : The Tycho-2 Catalogue (Hog+ 2000)III/260 : General Catalogue of Ap and Am stars (Renson+ 2009)I/345 : Gaia DR2 (Gaia Collaboration, 2018)IV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)J/ApJ/757/161 : Spectroscopy of 56 exoplanet host stars (Torres+, 2012)J/other/Nat/486.375 : Stellar parameters of KOI stars (Buchhave+, 2012)J/A+A/574/A116 : G and K giant stars stellar parameters (Reffert+, 2015)J/ApJ/822/86 : False positive probabilities Q1-Q17 DR24 KOIs (Morton+, 2016)J/A+A/600/A30 : Limb-darkening for TESS satellite (Claret, 2017)J/A+A/608/A93 : K2-106 radial velocities measurements (Guenther+, 2017)J/A+A/612/A57 : MASCARA-2 b (HD185603) light curves and spectra (Talens+, 2018)J/AJ/156/18 : APOGEE DR14:Binary comp. of evolved stars (Price-Whelan+, 2018)J/A+A/625/A16 : HD 2685 TESS photometry (Jones+, 2019)J/A+A/630/A89 : WASP-12b and WASP-43b griz light curves (Parviainen+, 2019)J/AJ/157/31 : Differential photo. & radial velocities HATS-70 (Zhou+, 2019)J/AJ/157/145 : HIRES RVs of three compact, multiplanet systems (Mills+, 2019)J/AJ/157/149 : Transit parameters for planets around subgiants (Luhn+, 2019)J/AJ/158/109 : Occurrence rates of planets orbiting FGK stars (Hsu+, 2019)J/AJ/158/141 : Differential photo. & RVs of HAT-P-69 & HAT-P-70 (Zhou+, 2019)J/AJ/159/145 : RVs & opt. photometry of the host star TOI-677 (Jordan+, 2020)J/AJ/159/187 : 1st RVs with the EXPRES spectrograph: 51Peg (Petersburg+, 2020)J/AJ/159/242 : Velocities & transit times in Kepler-88 system (Weiss+, 2020)J/AJ/160/96 : CORALIE and PFS radial velocities of HD 86226 (Teske+, 2020)J/AJ/160/155 : Light curve segments of 22 host stars with TESS (Wong+, 2020)J/AJ/160/235 : Optical photometry & RVs of TOI-481b & TOI-892b (Brahm+, 2020)J/A+A/647/A49 : Chemical analysis early-type stars with planets (Saffe+, 2021)J/AJ/161/36 : 117 exoplanets habitable zone with Kepler DR25 (Bryson+, 2021)J/AJ/161/68 : Obliquities of 150 hot Kepler hosting stars (Louden+, 2021)J/ApJS/254/39 : Exoplanet candidates from TESS first 2yr obs (Guerrero+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/162/292https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/162/292http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/162/292https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/162/292https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/162/292http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/162/292GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/AJ/162/292/table4Radial velocity measurementsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJD[58805/59060] Barycentric Julian Date BJD-2400000 (1)dtime.epochdoubleRVel[-25901/168] Radial velocity (2)m/sphys.veloc;pos.heliocentricdoublee_RVel[1/140] The 1{sigma} uncertainty in RVelm/sstat.error;spect.dopplerVelocfloatInstInstrument usedinstr.setupcharJ/AJ/162/292/fig3Ground-based transit photometry of TOI-1431b with CDK14 and MuSCAT2recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintInstInstrument identifiermeta.id;instrcharBJD[2458842/2458986] Barycentric Julian Datedtime.epochdoubleNFlux[0.98/1.01] Normalized fluxphot.flux;arith.ratiodoublee_NFlux[0.0008/0.003] Uncertainty in NFluxstat.errordoubleJ/AJ/162/292/fig4Ground-based transit photometry of TOI-1431b with AUKR, SCT, ULMT, and LCOrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintInstInstrument identifiermeta.id;instrcharBJD[2459017/2459137] Barycentric Julian Datedtime.epochdoubleNFlux[0.98/1.02] Normalized fluxphot.flux;arith.ratiodoublee_NFlux[0.0006/0.004] Uncertainty in NFluxstat.errordoubleJ/AJ/162/292/fig10TESS Sector 15 and 16 single-scale MAP corrected PDC photometry of TOI-1431brecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintInstInstrument identifiermeta.id;instrcharBJD[2458711/2458763] Barycentric Julian Datedtime.epochdoubleindexedNFlux[0.99/1.01] Normalized fluxphot.flux;arith.ratiodoublee_NFlux[0.0003/0.0004] Uncertainty in NFluxstat.errordouble