J/AJ/163/156ivo://CDS.VizieR/J/AJ/163/156doi:10.26093/cds/vizier.51630156CDSMann A.W.Wood M.L.Schmidt S.P.Barber M.G.Owen J.E.,Tofflemire B.M.Newton E.R.Mamajek E.E.Bush J.L.Mace G.N.,Kraus A.L.Thao P.C.Vanderburg A.Llama J.Johns-krull C.M.Prato L.,Stahl A.G.Tang S.-Y.Fields M.J.Collins K.A.Collins K.I.Gan T.,Jensen E.L.N.Kamler J.Schwarz R.P.Furlan E.Gnilka C.L.,Howell S.B.Lester K.V.Owens D.A.Suarez O.Mekarnia D.Guillot T.,Abe L.Triaud A.H.M.J.Johnson M.C.Milburn R.P.Rizzuto A.C.,Quinn S.N.Kerr R.Ricker G.R.Vanderspek R.Latham D.W.Seager S.,Winn J.N.Jenkins J.M.Guerrero N.M.Shporer A.Schlieder J.E.,Mclean B.Wohler B.2024-10-11T20:10:11Z2022-05-09T08:04:41ZCDS support team

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

cds-question@unistra.frpre-main-sequence-starsexoplanetsvisible-astronomyspectroscopyinfrared-astronomyradial-velocityMature super-Earths and sub-Neptunes are predicted to be ~Jovian radius when younger than 10Myr. Thus, we expect to find 5-15 R{Earth} planets around young stars even if their older counterparts harbor none. We report the discovery and validation of TOI1227b, a 0.85{+/-}0.05R _J_ (9.5R{Earth}) planet transiting a very-low-mass star (0.170{+/-}0.015M{sun}) every 27.4days. TOI 1227's kinematics and strong lithium absorption confirm that it is a member of a previously discovered subgroup in the Lower Centaurus Crux OB association, which we designate the Musca group. We derive an age of 11{+/-}2Myr for Musca, based on lithium, rotation, and the color-magnitude diagram of Musca members. The TESS data and ground-based follow-up show a deep (2.5%) transit. We use multiwavelength transit observations and radial velocities from the IGRINS spectrograph to validate the signal as planetary in nature, and we obtain an upper limit on the planet mass of ~0.5M _J_. Because such large planets are exceptionally rare around mature low-mass stars, we suggest that TOI1227b is still contracting and will eventually turn into one of the more common <5R{Earth} planets.2022AJ....163..156Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/163/156CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)J/A+A/551/A46 : Compiled photometry Cham I & II members (Lopez Marti+, 2013)J/MNRAS/435/1325 : Membership of the {eta} Cha association (Murphy+, 2013)J/ApJ/788/81 : BANYAN III. RVel and rotation of low-mass stars (Malo+, 2014)J/A+A/573/A126 : VLT/NaCo Large program I. Sample (Desidera+, 2015)J/AJ/157/234 : ACRONYM. III. Candidate low-mass stars (Schneider+, 2019)J/AJ/161/65 : THYME. IV. 3 Exoplanets around TOI-451 B (Newton+, 2021)J/AJ/161/171 : THYME. V. Discovering stellar association (Tofflemire+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/163/156https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/163/156http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/163/156https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/163/156https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/163/156http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/163/156GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/163/156/table5 (Friends of TOI 1227)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/163/156/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/163/156/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/163/156/table5?GETtext/xml+votable180.050000true186.76734-72.451850.0055555555555555565/10376 10378 10400-10401 6/37123 37125 37127 37136-37137 37139 37141 37145-37146 37184-37185 37200 41134 41472 41474-41476 41478 41480 41482 41484 41489 41500 41508-41510 41516 41518-41519 41522 41524 41528 41530 41608 41610-41613 41616 41632-41634 41636https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/163/156?format=asciiOpticalInfrareddefaultJ/AJ/163/156/table2Radial velocity measurements of TOI 1227RVel[11.3/14.4] Radial Velocitykm/sphys.veloc;pos.heliocentricfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJD[8978/9330] Observation date, JD-2450000dtime.epochdoublee_RVel[0.03/0.5] Uncertainty in RVel (1)km/sstat.error;spect.dopplerVelocfloatInstInstrument; HRS or IGRINSmeta.id;instrcharJ/AJ/163/156/table5Friends of TOI 1227_RA.icrsRight ascension (ICRS) at Epoch=J2016. (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2016. (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.decnullableindexedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTICTESS input catalog identifiermeta.id;meta.mainlongRAICRS[167/204] Gaia EDR3 Right Ascension (ICRS at Epoch 2016.0)degpos.eq.ra;meta.mainDEICRS[-78/-67] Gaia EDR3 Declination (ICRS at Epoch 2016.0)degpos.eq.dec;meta.mainRVel[3.03/34.1]? Radial Velocitykm/sphys.veloc;pos.heliocentricfloatnullablee_RVel[0.1/20]? Uncertainty in RVelkm/sstat.error;spect.dopplerVelocfloatnullabler_RVelReference/Source for RVel (1)meta.ref;pos.framecharEWLi[23/598]? Equivalent width, Li, (mA)0.1pmspect.line.eqWidthintnullabler_EWLiReference/Source for EWLi (2)meta.ref;pos.framecharProt[0.3/24.6] Rotational perioddtime.periodfloatq_Prot[Q0123] Rotational period Quality (3)meta.code.qualcharCMGY=star is in Crux Moving Group, Goldman+, 2018, J/ApJ/868/32meta.codecharSpyGlassSpyGlass, Kerr+, 2021ApJ...917...23Kmeta.codecharFFFriendFinder, Tofflemire+, 2021, J/AJ/161/171meta.codechar