Hawthorn, FaithFaithHawthornBayliss, DanielDanielBaylissWilson, Thomas G.Thomas G.WilsonBonfanti, AndreaAndreaBonfantiAdibekyan, VardanVardanAdibekyanAlibert, YannYannAlibertSousa, Sérgio G.Sérgio G.SousaCollins, Karen A.Karen A.CollinsBryant, Edward M.Edward M.BryantOsborn, AresAresOsbornArmstrong, David J.David J.ArmstrongAbe, LyuLyuAbeActon, Jack S.Jack S.ActonAddison, Brett C.Brett C.AddisonAgabi, KarimKarimAgabiAlonso, RoiRoiAlonsoAlves, Douglas R.Douglas R.AlvesAnglada-Escudé, GuillemGuillemAnglada-EscudéBárczy, TamasTamasBárczyBarclay, ThomasThomasBarclayBarrado, DavidDavidBarradoBarros, Susana C. C.Susana C. C.BarrosBaumjohann, WolfgangWolfgangBaumjohannBendjoya, PhilippePhilippeBendjoyaBenz, WillyWillyBenzBieryla, AllysonAllysonBierylaBonfils, XavierXavierBonfilsBouchy, FrançoisFrançoisBouchyBrandeker, AlexisAlexisBrandekerBroeg, ChristopherChristopherBroegBrown, David J. A.David J. A.BrownBurleigh, Matthew R.Matthew R.BurleighBUTTU, MarcoMarcoBUTTUCabrera, JuanJuanCabreraCaldwell, Douglas A.Douglas A.CaldwellCasewell, Sarah L.Sarah L.CasewellCharbonneau, DavidDavidCharbonneauCharnoz, SébastianSébastianCharnozCloutier, RyanRyanCloutierCameron, Andrew CollierAndrew CollierCameronCollins, Kevin I.Kevin I.CollinsConti, Dennis M.Dennis M.ContiCrouzet, NicolasNicolasCrouzetCzismadia, SzilárdSzilárdCzismadiaDavies, Melvyn B.Melvyn B.DaviesDeleuil, MagaliMagaliDeleuilDelgado-Mena, ElisaElisaDelgado-MenaDelrez, LaetitiaLaetitiaDelrezDemangeon, Olivier D. S.Olivier D. S.DemangeonDemory, Brice-OlivierBrice-OlivierDemoryDransfield, GeorginaGeorginaDransfieldDumusque, XavierXavierDumusqueEgger, Jo AnnJo AnnEggerEhrenreich, DavidDavidEhrenreichEigmüller, PhilippPhilippEigmüllerErickson, AndersAndersEricksonEssack, ZahraZahraEssackFortier, AndreaAndreaFortierFossati, LucaLucaFossatiFridlund, MalcolmMalcolmFridlundGünther, Maximilian N.Maximilian N.GüntherGüdel, ManuelManuelGüdelGandolfi, DavideDavideGandolfiGillard, HarveyHarveyGillardGillon, MichaëlMichaëlGillonGnilka, CrystalCrystalGnilkaGoad, Michael R.Michael R.GoadGoeke, Robert F.Robert F.GoekeGuillot, TristanTristanGuillotHadjigeorghiou, AndreasAndreasHadjigeorghiouHellier, CoelCoelHellierHenderson, Beth A.Beth A.HendersonHeng, KevinKevinHengHooton, Matthew J.Matthew J.HootonHorne, KeithKeithHorneHowell, Steve B.Steve B.HowellHoyer, SergioSergioHoyerIrwin, Jonathan M.Jonathan M.IrwinJenkins, James S.James S.JenkinsJenkins, Jon M.Jon M.JenkinsJensen, Eric L. N.Eric L. N.JensenKane, Stephen R.Stephen R.KaneKendall, AliciaAliciaKendallKielkopf, John F.John F.KielkopfKiss, Laszlo L.Laszlo L.KissLACEDELLI, GAIAGAIALACEDELLILaskar, JacquesJacquesLaskarLatham, David W.David W.LathamEtangs, Alain Lecavalier desAlain Lecavalier desEtangsLeleu, AdrienAdrienLeleuLendl, MonikaMonikaLendlLillo-Box, JorgeJorgeLillo-BoxLovis, ChristopheChristopheLovisMékarnia, DjamelDjamelMékarniaMassey, BobBobMasseyMasters, TamzinTamzinMastersMaxted, Pierre F. L.Pierre F. L.MaxtedNASCIMBENI, VALERIOVALERIONASCIMBENINielsen, Louise D.Louise D.NielsenO'Brien, Sean M.Sean M.O'BrienOlofsson, GöranGöranOlofssonOsborn, Hugh P.Hugh P.OsbornPAGANO, IsabellaIsabellaPAGANOPallé, EnricEnricPalléPersson, Carina M.Carina M.PerssonPIOTTO , GIAMPAOLOGIAMPAOLOPIOTTOPlavchan, PeterPeterPlavchanPollacco, DonDonPollaccoQueloz, DidierDidierQuelozRAGAZZONI, RobertoRobertoRAGAZZONIRauer, HeikeHeikeRauerRibas, IgnasiIgnasiRibasRicker, GeorgeGeorgeRickerSégransan, DamienDamienSégransanSalmon, SébastienSébastienSalmonSanterne, AlexandreAlexandreSanterneSantos, Nuno C.Nuno C.SantosSCANDARIATO, GAETANOGAETANOSCANDARIATOSchmider, François-XavierFrançois-XavierSchmiderSchwarz, Richard P.Richard P.SchwarzSeager, SaraSaraSeagerShporer, AviAviShporerSimon, Attila E.Attila E.SimonSmith, Alexis M. S.Alexis M. S.SmithSrdoc, GregorGregorSrdocSteller, ManfredManfredStellerSuarez, OlgaOlgaSuarezSzabó, Gyula M.Gyula M.SzabóTeske, JohannaJohannaTeskeThomas, NicolasNicolasThomasTilbrook, Rosanna H.Rosanna H.TilbrookTriaud, Amaury H. M. J.Amaury H. M. J.TriaudUdry, StéphaneStéphaneUdryVan Grootel, ValérieValérieVan GrootelWalton, NicholasNicholasWaltonWang, Sharon X.Sharon X.WangWheatley, Peter J.Peter J.WheatleyWinn, Joshua N.Joshua N.WinnWittenmyer, Robert A.Robert A.WittenmyerZhang, HuiHuiZhang2025-02-262025-02-2620230035-8711http://hdl.handle.net/20.500.12386/36284We present the discovery of two exoplanets transiting TOI-836 (TIC 440887364) using data from TESS Sector 11 and Sector 38. TOI-836 is a bright (T = 8.5 mag), high proper motion (~200 mas yr<SUP>-1</SUP>), low metallicity ([Fe/H]≈-0.28) K-dwarf with a mass of 0.68 ± 0.05 M<SUB>⊙</SUB> and a radius of 0.67 ± 0.01 R<SUB>⊙</SUB>. We obtain photometric follow-up observations with a variety of facilities, and we use these data sets to determine that the inner planet, TOI-836 b, is a 1.70 ± 0.07 R<SUB>⊕</SUB> super-Earth in a 3.82-d orbit, placing it directly within the so-called 'radius valley'. The outer planet, TOI-836 c, is a 2.59 ± 0.09 R<SUB>⊕</SUB> mini-Neptune in an 8.60-d orbit. Radial velocity measurements reveal that TOI-836 b has a mass of 4.5 ± 0.9 M<SUB>⊕</SUB>, while TOI-836 c has a mass of 9.6 ± 2.6 M<SUB>⊕</SUB>. Photometric observations show Transit Timing Variations (TTVs) on the order of 20 min for TOI-836 c, although there are no detectable TTVs for TOI-836 b. The TTVs of planet TOI-836 c may be caused by an undetected exterior planet....STAMPAenArticle10.1093/mnras/stad3062-s2.0-85159304875https://api.elsevier.com/content/abstract/scopus_id/851593048752023MNRAS.520.3649HFIS/05 - ASTRONOMIA E ASTROFISICAERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation