J/AJ/163/133ivo://CDS.VizieR/J/AJ/163/133doi:10.26093/cds/vizier.51630133CDSEspinoza N.Palle E.Kemmer J.Luque R.Caballero J.A.Cifuentes C.,Herrero E.Sanchez Bejar V.J.Stock S.Molaverdikhani K.Morello G.,Kossakowski D.Schlecker M.Amado P.J.Bluhm P.Cortes-Contreras M.,Henning T.Kreidberg L.Kurster M.Lafarga M.Lodieu N.Morales J.C.,Oshagh M.Passegger V.M.Pavlov A.Quirrenbach A.Reffert S.,Reiners A.Ribas I.Rodriguez E.Lopez C.R.Schweitzer A.Trifonov T.,Chaturvedi P.Dreizler S.Jeffers S.V.Kaminski A.Lopez-Gonzalez M.J.,Lillo-Box J.Montes D.Nowak G.Pedraz S.Vanaverbeke S.,Zapatero Osorio M.R.Zechmeister M.Collins K.A.Girardin E.Guerra P.,Naves R.Crossfield I.J.M.Matthews E.C.Howell S.B.Ciardi D.R.,Gonzales E.Matson R.A.Beichman C.A.Schlieder J.E.Barclay T.,Vezie M.Villasenor J.N.Daylan T.Mireies I.Dragomir D.Twicken J.D.,Jenkins J.Winn J.N.Latham D.Ricker G.Seager S.2022-09-30T22:16:54Z2022-05-06T06:52:33ZCDS support team

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

cds-question@unistra.frexoplanetsm-starsinfrared-photometryvisible-astronomyphotometryradial-velocityWe report the discovery and characterization of TOI-1759b, a temperate (400K) sub-Neptune-sized exoplanet orbiting the M-dwarf TOI-1759 (TIC408636441). TOI-1759b was observed by TESS to transit in Sectors 16, 17, and 24, with only one transit observed per sector, creating an ambiguity regarding the orbital period of the planet candidate. Ground-based photometric observations, combined with radial-velocity measurements obtained with the CARMENES spectrograph, confirm an actual period of 18.85019{+/-}0.00014days. A joint analysis of all available photometry and radial velocities reveals a radius of 3.17{+/-}0.10R{Earth} and a mass of 10.8{+/-}1.5M{Earth}. Combining this with the stellar properties derived for TOI-1759 (R*=0.597{+/-}0.015R{sun}; M*=0.606{+/-}0.020M{sun}; Teff=4065{+/-}51K), we compute a transmission spectroscopic metric (TSM) value of over 80 for the planet, making it a good target for transmission spectroscopy studies. TOI-1759b is among the top five temperate, small exoplanets (Teq<500K, Rp<4R{Earth}) with the highest TSM discovered to date. Two additional signals with periods of 80 days and >200 days seem to be present in our radial velocities. While our data suggest both could arise from stellar activity, the later signal's source and periodicity are hard to pinpoint given the ~200 days baseline of our radial-velocity campaign with CARMENES. Longer baseline radial-velocity campaigns should be performed in order to unveil the true nature of this long-period signal.2022AJ....163..133Ehttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/163/133CatalogResearchIsServedByTAP VizieR generic servicerelated-toI/259 : The Tycho-2 Catalogue (Hog+ 2000)II/328 : AllWISE Data Release (Cutri+ 2013)IV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)J/A+A/492/277 : Analysis of Collinder 69 stars with VOSA (Bayo+, 2008)J/AJ/145/102 : Spectro. bright M dwarfs in the northern sky (Lepine+, 2013)J/AJ/153/71 : Kepler follow-up observation program I Imaging (Furlan+, 2017)J/AJ/156/264 : California-Kepler Survey VII Planet radius gap (Fulton+, 2018)J/A+A/629/A111 : L 98-59 (TOI 175) HARPS observations (Cloutier+, 2019)J/AJ/158/109 : Occurrence rates of planets orbiting FGK stars (Hsu+, 2019)J/AJ/157/211 : Unresolved binaries TESS with speckle imaging (Matson+, 2019)J/other/Sci/365.1441 : GJ 3512 radial velocity & light curves (Morales+, 2019)J/A+A/627/A161 : CARMENES stars multiwavelength measurements (Passegger+, 2019)J/A+A/623/A44 : CARMENES M-dwarfs activity indicators (Schoefer+, 2019)J/A+A/625/A68 : Radii and masses of the CARMENES targets (Schweitzer+, 2019)J/A+A/642/A115 : CARMENES input catalogue of M dwarfs. V. (Cifuentes+, 2020)J/AJ/159/239 : Transmission Spectroscopy Metric of exoplanets (Guo+, 2020)J/A+A/636/A36 : Absolute radial velocities CARMENES M dwarfs (Lafarga+, 2020)J/A+A/636/A119 : YZCeti CARMENES and HARPS radial velocity curve (Stock+, 2020)J/A+A/643/A112 : CARMENES VIS RVs of 3 M dwarfs (Stock+, 2020)J/A+A/650/A188 : G 264-012 and Gl 393 radial velocity curves (Amado+, 2021)J/A+A/649/A6 : Gaia Catalogue of Nearby Stars-GCNS (Gaia collaboration, 2021)J/ApJS/254/39 : Exoplanet candidates from TESS first 2yr obs (Guerrero+, 2021)J/A+A/649/A26 : TOI-178 six transiting planets (Leleu+, 2021)J/A+A/656/A162 : CARMENES stellar atmospheric parameters (Marfil+, 2021)J/AJ/161/174 : Transit depth biases & error bars 31 planets (Morello+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/163/133https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/163/133http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/163/133https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/163/133https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/163/133http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/163/133GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/AJ/163/133/table5Radial velocity measurements for the star along with activity indicators at each epochrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTargetTarget namemeta.id;meta.maincharBJD[9054/9233] Time, BJD-2450000dtime.epochdoubleRVel[-11.1/8.44] Radial velocitym/sphys.veloc;pos.heliocentricfloate_RVel[1/7] Error on RVelm/sstat.error;spect.dopplerVelocfloatCRX[-61.1/49.5] Chromatic index, m/s/Np (Neper)spect.indexfloatdLW[-27.9/30.7] dLW Differential line-width, 1e^3^m**2.s**-2em.freqfloatBIS[-0.44/0.009] Bisector spankm/sphys.velocfloatEWHa[0.02/0.13] Equivalent Width, H-alphakm/sspect.line.eqWidthfloatCaII-a[-0.008/0.04] CaII IRT a indicatorkm/smeta.codefloatCaII-b[0.02/0.09] CaII IRT b indicatorkm/smeta.codefloatCaII-c[-0.02/0.06] CaII IRT c indicatorkm/smeta.codefloatTiO7050[0.87/0.89] TiO indicator at 7050Angstromskm/smeta.codefloatTiO8430[0.85/0.89] TiO indicator at 8430Angstromskm/smeta.codefloatTiO8860[0.96/1] TiO indicator at 8860Angstromskm/smeta.codefloatHPb[-0.01/0.009] Paschen Beta line indicatorkm/sspect.line.eqWidthfloatHe[-0.04/-0.005] indicator at 10833Angstromskm/sspect.line.eqWidthfloatInstrInstrument namemeta.id;instrcharSNR[25.7/120] Signal-to-noise ratio at order 36 (840nm)stat.snrfloatJ/AJ/163/133/table6Photometric transits of the planetTargetTarget Namemeta.id;meta.maincharInstrInstrumentmeta.id;instrcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJD[8738/8991] Time, BJD-2450000dtime.epochdoubleindexedFlux[0.98/1.03] Relative fluxphot.flux;arith.ratiodoublee_Flux[0.001/0.002] Uncertainty in Fluxstat.error;phot.fluxdoubleAMass[-1.45/2.22]? Standarized airmass (1)obs.airMassfloatnullableJ/AJ/163/133/table7Long-term photometric measurements of TOI-1759TargetTarget Namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJD[9010/9458] Time, BJD-2450000dtime.epochdoubleFlux[0.97/1.04] Relative fluxphot.flux;arith.ratiodoublee_Flux[0.0006/0.004] Uncertainty in Fluxstat.error;phot.fluxdoubleInstrInstrumentmeta.id;instrchar