J/AJ/164/96ivo://CDS.VizieR/J/AJ/164/96CDSCadieux C.Doyon R.Plotnykov M.Hebrard G.Jahandar F.Artigau E.,Valencia D.Cook N.J.Martioli E.Vandal T.Donati J.-F.Cloutier R.,Narita N.Fukui A.Hirano T.Bouchy F.Cowan N.B.Gonzales E.J.,Ciardi D.R.Stassun K.G.Arnold L.Benneke B.Boisse I.Bonfils X.,Carmona A.Cortes-Zuleta P.Delfosse X.Forveille T.Fouque P.,da Silva J.G.Jenkins J.M.Kiefer F.Kospal A.Lafreniere D.,Martins J.H.C.Moutou C.do Nascimento J.-D.J.Ould-Elhkim M.,Pelletier S.Twicken J.D.Bouma L.G.Cartwright S.Darveau-Bernier A.,Grankin K.Ikoma M.Kagetani T.Kawauchi K.Kodama T.Kotani T.,Latham D.W.Menou K.Ricker G.Seager S.Tamura M.Vanderspek R.,Watanabe N.2022-12-06T05:46:26Z2022-11-28T08:04:32ZCDS support team

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

cds-question@unistra.frexoplanetsm-starsinfrared-astronomyspectroscopyradial-velocityExploring the properties of exoplanets near or inside the radius valley provides insight on the transition from the rocky super-Earths to the larger, hydrogen-rich atmosphere mini-Neptunes. Here, we report the discovery of TOI-1452b, a transiting super-Earth (Rp=1.67{+/-}0.07R{Earth}) in an 11.1day temperate orbit (Teq=326{+/-}7K) around the primary member (H=10.0, Teff=3185 {+/-}50K) of a nearby visual-binary M-dwarf. The transits were first detected by the Transiting Exoplanet Survey Satellite, then successfully isolated between the two 3.2" companions with ground-based photometry from the Observatoire du Mont-Megantic and MuSCAT3. The planetary nature of TOI-1452b was established through high-precision velocimetry with the near-infrared SPIRou spectropolarimeter as part of the ongoing SPIRou Legacy Survey. The measured planetary mass (4.8{+/-}1.3M{Earth}) and inferred bulk density (5.6_-1.6_^+1.8^g/cm^3^) is suggestive of a rocky core surrounded by a volatile-rich envelope. More quantitatively, the mass and radius of TOI-1452b, combined with the stellar abundance of refractory elements (Fe, Mg, and Si) measured by SPIRou, is consistent with a core-mass fraction of 18%{+/-}6% and a water-mass fraction of 22_-13_^+21^%. The water world candidate TOI-1452b is a prime target for future atmospheric characterization with JWST, featuring a transmission spectroscopy metric similar to other well-known temperate small planets such as LHS1140b and K2-18b. The system is located near Webb's northern continuous viewing zone, implying that is can be followed at almost any moment of the year.2022AJ....164...96Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/164/96CatalogResearchIsServedByTAP VizieR generic servicerelated-toIV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)J/other/Sci/330.653 : Detected planets in the Eta-Earth Survey (Howard+, 2010)J/ApJ/779/188 : Spectra of nearby late K and M Kepler stars (Mann+, 2013)J/MNRAS/432/1203 : Rotation periods of M-dwarf stars (McQuillan+, 2013)J/ApJS/208/9 : Intrinsic colors and temperatures of PMS stars (Pecaut+, 2013)J/A+A/566/A103 : Kepler planet host candidates imaging (Lillo-Box+, 2014)J/ApJ/807/45 : Habitable planets orbiting M dwarfs (Dressing+, 2015)J/ApJ/804/64 : Empirical and model parameters of 183 M dwarfs (Mann+, 2015)J/ApJ/809/77 : Transiting Exoplanet Survey Satellite (TESS) (Sullivan+, 2015)J/AJ/152/180 : Bolometric fluxes eclipsing binaries Tycho-2 (Stassun+, 2016)J/AJ/154/109 : California-Kepler Survey. III. Planet radii (Fulton+, 2017)J/AJ/153/136 : Planets & host stars with Gaia parallaxes (Stassun+, 2017)J/A+A/615/A69 : K2-3 system characterized with HARPSN & HARPS (Damasso+, 2018)J/AJ/156/264 : California-Kepler Survey VII Planet radius gap (Fulton+, 2018)J/ApJ/856/23 : BANYAN. XI. The BANYAN {Sigma} algorithm (Gagne+, 2018)J/AJ/155/136 : Planets orbiting bright stars K2 campaigns 0-10 (Mayo+, 2018)J/AJ/155/180 : A catalog of cool dwarf targets for the TESS (Muirhead+, 2018)J/AJ/156/217 : Stellar properties for Mdwarfs in MEarth-South (Newton+, 2018)J/AJ/155/89 : California-Kepler Survey (CKS). IV. Planets (Petigura+, 2018)J/AJ/156/102 : TESS Input Catalog and Candidate Target List (Stassun+, 2018)J/A+A/629/A111 : L 98-59 (TOI 175) HARPS observations (Cloutier+, 2019)J/AJ/157/231 : MLSDSS-GaiaDR2 sample of M and L dwarfs (Kiman+, 2019)J/ApJ/871/63 : How to constrain M dwarf. II. Nearby binaries (Mann+, 2019)J/ApJ/875/29 : Spectroscopic analysis of the CKS sample. I. (Martinez+, 2019)J/AJ/160/108 : Gaia-Kepler stellar properties. II. Planets (Berger+, 2020)J/AJ/159/211 : Exoplanets parameters from Kepler and K2 (Cloutier+, 2020)J/AJ/160/3 : Radial velocities M-dwarf LTT3780 with HARPS (Cloutier+, 2020)J/AJ/160/22 : TOI-1235 Radial velocities & optical spectro (Cloutier+, 2020)J/A+A/644/A127 : LP714-47 (TOI 442) radial velocity curve (Dreizler+, 2020)J/ApJS/247/28 : K2 star parameter from Gaia & LAMOST (Hardegree-Ullman+, 2020)J/A+A/642/A121 : LHS1140 radial velocity data (Lillo-Box+, 2020)J/AN/341/996 : Stellar companions of (C)TOIs (Mugrauer+, 2020)J/AJ/162/79 : HARPS radial velocity follow up of TOI-1634 (Cloutier+, 2021)J/AJ/161/265 : Compared rotation periods 1189 CKS host stars (David+, 2021)J/A+A/653/A41 : L 98-59 (TOI-175) ESPRESSO observations (Demangeon+, 2021)J/ApJS/254/39 : Exoplanet candidates from TESS first 2yr obs (Guerrero+, 2021)J/A+A/648/A48 : SPIRou wavelength calibration (Hobson+, 2021)J/A+A/650/A201 : 10 parsec sample in the Gaia era (Reyle+, 2021)J/A+A/660/A86 : Detection and characterization of TOI-1759 b (Martioli+, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/164/96https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/164/96http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/164/96https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/164/96https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/164/96http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/164/96GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapInfrareddefaultJ/AJ/164/96/tabled1SPIRou and IRD radial velocity measurementsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintInstInstrument used (1)instr.setupcharBJD[2459004/2459391] Barycentric Julian datedtime.epochdoubleRVel[-34006/17.2] Radial velocity (2)m/sphys.veloc;pos.heliocentricdoublee_RVel[3/23] Uncertainty in RVelm/sstat.error;spect.dopplerVelocfloat