J/AJ/163/82ivo://CDS.VizieR/J/AJ/163/82doi:10.26093/cds/vizier.51630082CDSWittenmyer R.A.Clark J.T.Trifonov T.Addison B.C.Wright D.J.,Stassun K.G.Horner J.Lowson N.Kielkopf J.Kane S.R.Plavchan P.,Shporer A.Zhang H.Bowler B.P.Mengel M.W.Okumura J.Rabus M.,Johnson M.C.Harbeck D.Tronsgaard R.Buchhave L.A.Collins K.A.,Collins K.I.Gan T.Jensen E.L.N.Howell S.B.Furlan E.Gnilka C.L.,Lester K.V.Matson R.A.Scott N.J.Ricker G.R.Vanderspek R.,Latham D.W.Seager S.Winn J.N.Jenkins J.M.Rudat A.Quintana E.V.,Rodriguez D.R.Caldwell D.A.Quinn S.N.Essack Z.Bouma L.G.2022-09-30T22:22:55Z2022-05-23T07:19:11ZCDS support team

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

cds-question@unistra.frexoplanetsvisible-astronomyspectroscopyradial-velocityThe imminent launch of space telescopes designed to probe the atmospheres of exoplanets has prompted new efforts to prioritize the thousands of transiting planet candidates for follow-up characterization. We report the detection and confirmation of TOI-1842b, a warm Saturn identified by TESS and confirmed with ground-based observations from Minerva-Australis, NRES, and the Las Cumbres Observatory Global Telescope. This planet has a radius of 1.04_-0.05_^+0.06^R_J_, a mass of 0.214_-0.038_^+0.040^M_J_, an orbital period of 9.5739_-0.0001_^+0.0002^days, and an extremely low density ({rho}=0.252{+/-}0.091g/cm^3^). TOI-1842b has among the best known combinations of large atmospheric scale height (893km) and host-star brightness (J=8.747mag), making it an attractive target for atmospheric characterization. As the host star is beginning to evolve off the main sequence, TOI-1842b presents an excellent opportunity to test models of gas giant reinflation. The primary transit duration of only 4.3hr also makes TOI-1842b an easily-schedulable target for further ground-based atmospheric characterization.2022AJ....163...82Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/163/82CatalogResearchIsServedByTAP VizieR generic servicerelated-toI/259 : The Tycho-2 Catalogue (Hog+ 2000)I/345 : Gaia DR2 (Gaia Collaboration, 2018)IV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)J/ApJ/687/1264 : Age estimation for solar-type dwarfs (Mamajek+, 2008)J/ApJ/720/1118 : i-band photometry of HAT-P-16 (Buchhave+, 2010)J/other/A+ARV/18.67 : Accurate masses and radii of normal stars (Torres+, 2010)J/ApJ/708/1366 : Radial velocities for 61 Vir (Vogt+, 2010)J/AJ/142/19 : Speckle observations of KOI (Howell+, 2011)J/A+A/536/A71 : Atmospheric parameters of nearby giant stars (Jones+, 2011)J/other/Nat/486.375 : Stellar parameters of KOI stars (Buchhave+, 2012)J/ApJ/809/25 : Stellar & planet properties for K2 candidates (Montet+, 2015)J/A+A/574/A116 : G and K giant stars stellar parameters (Reffert+, 2015)J/AJ/152/182 : iz follow-up photometry HAT-P-65 & HAT-P-66 (Hartman+, 2016)J/ApJ/831/L6 : Eclipsing binary parallaxes with Gaia data (Stassun+, 2016)J/A+A/585/A126 : 3 irradiated & bloated hot Jupiters RV and phot. (West+, 2016)J/ApJ/817/L20 : Wolf 1061 velocities and planet candidates (Wright+, 2016)J/A+A/599/A3 : WASP 127, 136 and 138 RV and light curves (Lam+, 2017)J/AJ/153/215 : Photometry and spectroscopy of KELT-11 (Pepper+, 2017)J/AJ/153/136 : Planets & their host stars with Gaia plxs (Stassun+, 2017)J/A+A/606/A73 : MASCARA-1b (HD201585) light curves and spectra (Talens+, 2017)J/AJ/155/89 : California-Kepler Survey (CKS). IV. Planets (Petigura+, 2018)J/A+A/629/A111 : L 98-59 (TOI 175) HARPS observations (Cloutier+, 2019)J/A+A/628/A39 : Radial velocities of GJ 357 (Luque+, 2019)J/AJ/158/177 : Near-resonance in system sub-Neptunes from TESS (Quinn+, 2019)J/AJ/158/197 : Radial velocities & light curves of KELT-24 (Rodriguez+, 2019)J/AJ/158/141 : Diff. photometry & RVs of HAT-P-69 & HAT-P-70 (Zhou+, 2019)J/AJ/160/235 : Optical photometry & RVs of TOI-481b & TOI-892b (Brahm+, 2020)J/AJ/159/241 : TESS-Keck Survey. I. HD332231 Radial Velocities (Dalba+, 2020)J/AJ/159/145 : RVs & opt. photometry of the host star TOI-677 (Jordan+, 2020)J/A+A/646/A131 : Four Jovian planets RV and activity indexes (Jones+, 2021)J/AJ/161/82 : Photometric & spectro. obs. of TOI-954 and K2-329 (Sha+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/163/82https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/163/82http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/163/82https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/163/82https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/163/82http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/163/82GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/AJ/163/82/table1Radial velocities for TOI-1842recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObsIDObservatory identifier; MINERVA Australis or NRESmeta.id;instr.obstycharBJD[2458981/2459065] Barycentric Julian Datedtime.epochdoubleRVel[3109/3797] Radial velocitym/sphys.veloc;pos.heliocentricfloate_RVel[8/68] Error on RVelm/dstat.error;spect.dopplerVelocfloatInstFiber or telescope usedmeta.id;instrchar