J/AJ/161/65ivo://CDS.VizieR/J/AJ/161/65doi:10.26093/cds/vizier.51610065CDSNewton E.R.Mann A.W.Kraus A.L.Livingston J.H.Vanderburg A.,Curtis J.L.Thao Pa C.Hawkins K.Wood M.L.Rizzuto A.C.Soubkiou A.,Tofflemire B.M.Zhou G.Crossfield I.J.M.Pearce L.A.Collins K.A.,Conti D.M.Tan T.-G.Villeneuva S.Spencer A.Dragomir D.Quinn S.N.,Jensen E.L.N.Collins K.I.Stockdale C.Cloutier R.Hellier C.,Benkhaldoun Z.Ziegler C.Briceno C.Law N.Benneke B.,Christiansen J.L.Gorjian V.Kane S.R.Kreidberg L.Morales F.Y.,Werner M.W.Twicken J.D.Levine A.M.Ciardi D.R.Guerrero N.M.,Hesse K.Quintana E.V.Shiao B.Smith J.C.Torres G.Ricker G.R.,Vanderspek R.Seager S.Winn J.N.Jenkins J.M.Latham D.W.2024-10-11T20:10:06Z2021-04-13T09:16:40ZCDS support team

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

cds-question@unistra.frexoplanetsdwarf-starsm-starsvisible-astronomyphotometrymultiple-starsYoung exoplanets can offer insight into the evolution of planetary atmospheres, compositions, and architectures. We present the discovery of the young planetary system TOI-451 (TIC257605131, GaiaDR24844691297067063424). TOI-451 is a member of the 120Myr old Pisces-Eridanus stream (Psc-Eri). We confirm membership in the stream with its kinematics, its lithium abundance, and the rotation and UV excesses of both TOI451 and its wide-binary companion, TOI-451B (itself likely an M-dwarf binary). We identified three candidate planets transiting in the Transiting Exoplanet Survey Satellite data and followed up the signals with photometry from Spitzer and ground-based telescopes. The system comprises three validated planets at periods of 1.9, 9.2, and 16days, with radii of 1.9, 3.1, and 4.1 R, respectively. The host star is near-solar mass with V=11.0 and H=9.3 and displays an infrared excess indicative of a debris disk. The planets offer excellent prospects for transmission spectroscopy with the Hubble Space Telescope and the James Webb Space Telescope, providing the opportunity to study planetary atmospheres that may still be in the process of evolving.2021AJ....161...65Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/161/65CatalogResearchIsServedByTAP VizieR generic servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)I/337 : Gaia DR1 (Gaia Collaboration, 2016)II/335 : Revised catalog of GALEX UV sources (GUVcat_AIS GR6+7)(Bianchi+ 2017)I/347 : Distances to 1.33 billion stars in Gaia DR2 (Bailer-Jones+, 2018)I/345 : Gaia DR2 (Gaia Collaboration, 2018)II/358 : SkyMapper Southern Sky Survey. DR1.1 (Wolf+, 2018)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)J/A+A/312/439 : New T Tauri stars in Taurus-Auriga (Wichmann+, 1996)J/A+A/397/147 : Activity-rotation relationship in stars (Pizzolato+ 2003)J/A+A/460/695 : Search Associations Containing Young stars (Torres+, 2006)J/AJ/139/1338 : UV-selected stars in Tau and Upper Sco (Findeisen+, 2010)J/ApJS/190/1 : A survey of stellar families (Raghavan+, 2010)J/ApJ/727/125 : 2 secondary eclipses of WASP-12b with Spitzer (Campo+, 2011)J/A+A/529/A75 : Limb-darkening coefficients (Claret+, 2011)J/ApJ/738/170 : False positive Kepler planet candidates (Morton+, 2011)J/MNRAS/416/3108 : Membership of Sco OB2 moving group (Rizzuto+, 2011)J/MNRAS/422/2024 : X-ray-age relation and exoplanet evaporation (Jackson+,2012)J/ApJ/757/164 : Oxygen abundances of dwarf stars (Ramirez+, 2012)J/ApJ/754/136 : Light curves of HD 149026b in 3.6-16um (Stevenson+, 2012)J/ApJS/208/9 : Intrinsic colors & temperatures of PMS stars (Pecaut+, 2013)J/A+A/571/A47 : Extensive linelist CH stellar atmospheres (Masseron+, 2014)J/AJ/148/64 : HAZMAT I. FUV & NUV emission early M stars (Shkolnik+, 2014)J/ApJ/804/64 : Empirical and model parameters of 183 M dwarfs (Mann+, 2015)J/ApJ/806/183 : Planet radii of Kepler Object of Interest (Wolfgang+, 2015)J/ApJ/818/153 : MEarth photometry: nearby M-dwarf mag (Dittmann+, 2016)J/AJ/151/68 : Kepler Mission. VII. Eclipsing binaries in DR3 (Kirk+, 2016)J/AJ/152/113 : Pleiades members K2 light curves. I. Periods (Rebull+, 2016)J/AJ/154/109 : California-Kepler Survey. III. Planet radii (Fulton+, 2017)J/AJ/154/224 : Transiting planets in young clusters from K2 (Rizzuto+,2017)J/MNRAS/474/2094 : Inferring probabilistic stellar rot. periods (Angus+, 2018)J/A+A/613/A63 : Lithium content for 148 Pleiades stars (Bouvier+, 2018)J/AJ/156/102 : TESS Input Catalog and Candidate Target List (Stassun+,2018)J/ApJS/235/38 : Kepler planetary cand VIII. DR25reliability (Thompson+,2018)J/AJ/156/259 : Robo-AO detected close binaries in Gaia DR2 (Ziegler+, 2018)J/ApJS/245/13 : CDIPS. I. LCs from TESS sectors 6 and 7 (Bouma+, 2019)J/AJ/158/77 : Cand. & members of the Pisces-Eridanus stream (Curtis+,2019)J/AJ/157/231 : MLSDSS-GaiaDR2 sample of M and L dwarfs (Kiman+, 2019)J/A+A/628/A66 : alpha Persei, Pleiades and Praesepe clusters (Lodieu+, 2019)J/ApJ/871/63 : How to constrain M dwarf. II. Nearby binaries (Mann+, 2019)J/A+A/622/L13 : Stellar stream in Gaia DR2 discovery (Meingast+, 2019)J/MNRAS/490/3806 : Exoplanets & variable stars 47 Tuc field (Nardiello+, 2019)J/A+A/621/L2 : Hyades tidal tails revealed by Gaia DR2 (Roeser+, 2019)J/AJ/159/239 : Transmission Spectroscopy Metric of exoplanets (Guo+, 2020)J/MNRAS/496/2422 : Abundances 42 Pisces-Eridanus stream stars (Hawkins+, 2020)J/MNRAS/492/1164 : Abundances of Gaia DR2 wide binaries (Hawkins+, 2020)J/A+A/639/A64 : Extended Meingast 1 source catalogue (Ratzenboeck+, 2020)J/A+A/638/A9 : Census of the near-by Psc-Eri stellar stream (Roeser+,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/161/65https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/161/65http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/161/65https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/161/65https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/161/65http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/161/65GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/AJ/161/65/fig8TESS light curve of TOI 451 BFlux[0.98/1.14] Relative fluxphot.flux;arith.ratiodoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJD[1410/1464] Barycentric Julian Date; BJD-2457000dtime.epochdouble