J/AJ/161/82ivo://CDS.VizieR/J/AJ/161/82doi:10.26093/cds/vizier.51610082CDSSha L.Huang C.X.Shporer A.Rodriguez J.E.Vanderburg A.Brahm R.,Hagelberg J.Matthews E.C.Ziegler C.Livingston J.H.Stassun K.G.,Wright D.J.Crane J.D.Espinoza N.Bouchy F.Bakos G.A.Collins K.A.,Zhou G.Bieryla A.Hartman J.D.Wittenmyer R.A.Nielsen L.D.,Plavchan P.Bayliss D.Sarkis P.Tan T.-G.Cloutier R.Mancini L.,Jordan A.Wang S.Henning T.Narita N.Penev K.Teske J.K.Kane S.R.,Mann A.W.Addison B.C.Tamura M.Horner J.Barbieri M.Burt J.A.,Diaz M.R.Crossfield I.J.M.Dragomir D.Drass H.Feinstein A.D.,Zhang H.Hart R.Kielkopf J.F.Jensen E.L.N.Montet B.T.Ottoni G.,Schwarz R.P.Rojas F.Nespral D.Torres P.Mengel M.W.Udry S.,Zapata A.Snoddy E.Okumura J.Ricker G.R.Vanderspek R.K.Latham D.W.,Winn J.N.Seager S.Jenkins J.M.Colon K.D.Henze C.E.,Krishnamurthy A.Ting E.B.Vezie M.Villanueva S.2021-07-05T12:32:43Z2021-04-23T12:00:51ZCDS support team

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

cds-question@unistra.frexoplanetsg-starsinfrared-photometryvisible-astronomyspectroscopyradial-velocitystellar-masseseffective-temperatureWe report the discovery of two short-period Saturn-mass planets, one transiting the G subgiant TOI-954 (TIC44792534, V=10.343, T=9.78) observed in TESS sectors 4 and 5 and one transiting the G dwarf K2-329 (EPIC246193072, V=12.70, K=10.67) observed in K2 campaigns 12 and 19. We confirm and characterize these two planets with a variety of ground-based archival and follow-up observations, including photometry, reconnaissance spectroscopy, precise radial velocity, and high-resolution imaging. Combining all available data, we find that TOI-954b has a radius of 0.852_-0.062_^+0.053^R_Jup_ and a mass of 0.174_-0.017_^+0.018^M_Jup_ and is in a 3.68day orbit, while K2-329b has a radius of 0.774_-0.024_^+0.026^R_Jup_ and a mass of 0.260_-0.022_^+0.020^M_Jup_ and is in a 12.46day orbit. As TOI-954b is 30 times more irradiated than K2-329b but more or less the same size, these two planets provide an opportunity to test whether irradiation leads to inflation of Saturn-mass planets and contribute to future comparative studies that explore Saturn-mass planets at contrasting points in their lifetimes.2021AJ....161...82Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/161/82CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)IV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)J/ApJ/683/1076 : Transits of exoplanet XO-3b (Winn+, 2008)J/ApJ/710/1724 : Follow-up photometry for HAT-P-11 (Bakos+, 2010)J/other/Nat/486.375 : Stellar parameters of KOI stars (Buchhave+, 2012)J/A+A/552/A16 : Limb-darkening for CoRoT, Kepler, Spitzer. II. (Claret+, 2013)J/AJ/152/182 : iz follow-up photom. of HAT-P-65 and HAT-P-66 (Hartman+, 2016)J/ApJS/224/2 : K2 EPIC stellar properties for 138600 targets (Huber+, 2016)J/AJ/152/187 : Planet occur. & stellar metallicity for KOIs (Mulders+, 2016)J/AJ/152/180 : Bolometric fluxes of eclipsing bin. in Tycho-2 (Stassun+,2016)J/ApJS/222/14 : Planetary candidates from 1st yr K2 mission (Vanderburg+,2016)J/A+A/602/A107 : 231 transiting planets eccentricity and mass (Bonomo+, 2017)J/ApJ/834/17 : Mass & radius of planets, moons, low mass stars (Chen+, 2017)J/A+A/600/A30 : Limb-darkening for TESS satellite (Claret, 2017)J/AJ/154/123 : Radial velocity follow-up of HD3167 system (Gandolfi+, 2017)J/AJ/153/142 : RVs of systems hosting sub-Saturns (Petigura+, 2017)J/AJ/153/136 : Planets and their host stars with Gaia plxs (Stassun+, 2017)J/AJ/156/18 : APOGEE DR14:Binary comp. of evolved stars (Price-Whelan+,2018)J/AJ/155/112 : RVel & light curves for HATS-43-HATS-46 (Brahm+, 2018)J/AJ/155/89 : California-Kepler Survey (CKS). IV. Planets (Petigura+, 2018)J/AJ/157/245 : High-precision radial velocities for HD 221416 (Huber+, 2019)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/161/82https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/161/82http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/161/82https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/161/82https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/161/82http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/161/82GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/161/82/table1 (Summary of Photometric Observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/161/82/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/161/82/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/161/82/table1?GETtext/xml+votable180.050000true61.9410861-25.20867530.005555555555555556Cone search capability for table J/AJ/161/82/table4 (Summary of Spectroscopic Observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/161/82/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/161/82/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/161/82/table4?GETtext/xml+votable180.050000true61.9410861-25.20867530.0055555555555555566/18707 34751https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/161/82?format=asciiOpticalInfrareddefaultJ/AJ/161/82/table2HATSouth Photometric Measurements of TOI-954recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJD[56838/57116] Barycentric Julian Date at TDB; BJD-2400000dtime.epochdoubleindexedomag[10.1/12.1] Raw magnitudemagphot.magdoublemag-epd[10.2/10.5] EPD detrended magnitude (1)magphot.magdoublemag-tfa[10.2/10.5] TFA detrended magnitude (2)magphot.magdoublee_omag[0.001/0.004] Uncertainty in omagmagstat.error;phot.magdoublef_omag[0/1] Flag on observation (3)meta.codeintJ/AJ/161/82/table3PEST Photometric Measurements of K2-329recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD[58071/58073] Heliocentric Julian Date at UTC, HJD-2400000dtime.epochdoubleomag[12.4/12.5] Observed magnitudemagphot.magfloate_omag[0.002/0.005] Uncertainty in omagmagstat.error;phot.magfloatJ/AJ/161/82/table5Precise Radial Velocity Measurements of TOI-954recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJD[2458536/2458799] Barycentric Julian Date of observation (1)dtime.epochdoubleRVel[-8845/36] Absolute relative motion (2)m/sphys.veloc;pos.heliocentricdoublee_RVel[0.9/35.27] Uncertainty in RVelm/sstat.error;spect.dopplerVelocdoubleTelTelescope/Instrument (CHIRON, CORALIE, HARPS, MINERVA-Aus, PFS)meta.notecharJ/AJ/161/82/table6Precise Radial Velocity Measurements of K2-329recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJD[2458040/2458418] Barycentric Julian Date of observationdtime.epochdoubleRVel[-17047/27] Absolute relative motion (1)m/sphys.veloc;pos.heliocentricdoublee_RVel[1.4/20] Uncertainty in RVelm/sstat.error;spect.dopplerVelocfloatTelTelescope/Instrument (FEROS, HARPS, PFS)meta.notecharJ/AJ/161/82/table10MCMC Samples of the Posterior Distribution of the TOI-954 System Global ModelrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlnP[-14371/-14327] natural log, probabilitystat.fit.goodnessdoubleTc[1411.90/1411.92] Time of conjunction, BJD TDB; -2458000dtime.epochdoublePer[3.68496/3.68499] Perioddtime.perioddoubleK[11.5/30.2] RV semiamplitudem/sphys.veloc;src.orbitaldoublesecosw[-0.42/0.38] sqrt(ecc).cos({omega}) (1)src.orbital.eccentricitydoublesesinw[-0.72/0.43] sqrt(ecc).sin({omega}) (1)src.orbital.eccentricitydoubleb[0.0002/0.67] Impact parameter, b=-a.cos(i)/R*src.impactParamdoubleRp/Rs[0.04/0.06] Ratio, planet/stellar radiusstat.fit.omcdoubleq11[0.006/1] q1, Limb darkening in TESS band (2)phot.limbDarkdoubleq12[0.0003/1] q2, Limb darkening in TESS band (2)phot.limbDarkdoubleq21[0.14/0.73] q1, Limb darkening in r band (2)phot.limbDarkdoubleq22[0.26/0.65] q2, Limb darkening in r band (2)phot.limbDarkdoubleq31[0.06/0.61] q1, Limb darkening in z_s band (2)phot.limbDarkdoubleq32[0.19/0.59] q1, Limb darkening in z_s band (2)phot.limbDarkdoubleMstar0[1.09/1.37] Stellar mass, initialsolMassphys.massdoubleAge[3.67/8.05] AgeGyrtime.agedouble[Fe/H]0[0.005/0.4] Metallicity, initialphys.abund.FedoubleDTess[0.01/0.06] Dilution factor, TESS photometric fluxphot.flux.densitydoubleDHATS[7.08e-10/0.0002] Dilution factor, HATSouth photometric fluxphot.flux.densitydoubleCLCOGT[1.63/2.03] Multiplicative uncertainty factor, LCOGTstat.errordoublegamma1[-8938/-8734] Constant RV offset, CHIRONm/spos;arith.diffdoublegamma2[-7359/-7334] Constant RV offset, CORALIEm/spos;arith.diffdoublegamma3[-7360/-7227] Constant RV offset, HARPSm/spos;arith.diffdoublegamma4[-33.5/8.45] Constant RV offset, PFSm/spos;arith.diffdoublegamma5[0.001/58.8] Constant RV offset, Minervam/spos;arith.diffdoublejitter1[0.0005/238] Additive RV jitter, CHIRONm/sstat.stdev;phys.velocdoublejitter2[0.001/31.6] Additive RV jitter, CORALIEm/sstat.stdev;phys.velocdoublejitter3[0.0008/242] Additive RV jitter, HARPSm/sstat.stdev;phys.velocdoublejitter4[1.72/34.7] Additive RV jitter, PFSm/sstat.stdev;phys.velocdoublejitter5[4.45/60.5] Additive RV jitter, Minervam/sstat.stdev;phys.velocdoublejitterGaia[5.11e-07/0.2] Additive jitter in magnitude, Gaia bandsmagstat.stdev;phys.velocdoubleMstar[0.91/1.54] Stellar mass, currentsolMassphys.massdoubleTeff[5514/5921] Effective temperatureKphys.temperature.effectivedoublelogg[3.84/4.11] log, Surface gravitylog(cm.s**-2)phys.gravitydouble[Fe/H][-0.02/0.44] Metallicity, currentphys.abund.ZdoubleAVmag[1.43e-05/0.3] Reddening, at V bandmagphot.mag.reddFree;em.opt.VdoubleJ/AJ/161/82/table11MCMC Chains from Global Model Fitting of K2-329recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlnP[9007/9041] natural log, probabilitystat.fit.goodnessdoubleTc[2940/2941] Time of conjunction, BJD TDB-2454833dtime.epochdoublePer[12.45/12.46] Perioddtime.perioddoubleK[13.3/31.6] RVel semiamplitudem/sphys.veloc;src.orbitaldoublesecosw[-0.6/0.32] sqrt(ecc).cos(omega) (1)src.orbital.eccentricitydoublesesinw[-0.24/0.39] sqrt(ecc).sin(omega) (1)src.orbital.eccentricitydoubleb[0.08/0.51] Impact parameter, b=-a.cos(i)/R*src.impactParamdoubleRp/Rs[0.094/0.099] Ratio, planet/stellar radiusstat.fit.omcdoubleq11[0.19/0.42] q1, Limb darkening in Kepler band (2)phot.limbDarkdoubleq12[0.35/0.7] q2, Limb darkening in Kepler band (2)phot.limbDarkdoubleq21[0.21/0.98] q1, Limb darkening in Rc band (2)phot.limbDarkdoubleq22[0.27/0.54] q2, Limb darkening in Rc band (2)phot.limbDarkdoubleMstar0[0.8/1] Stellar mass, initialsolMassphys.massdoubleAge[0.04/14] AgeGyrtime.agedouble[Fe/H]0[-0.16/0.31] Metallicity, initialphys.abund.FedoublejitterPEST[0.0008/0.004] Additive jitter, PEST normalized fluxstat.stdev;phys.velocdoublegamma1[-17018/-16983] Constant RV offset, FEROSm/spos;arith.diffdoublegamma2[-16997/-16967] Constant RV offset, HARPSm/spos;arith.diffdoublegamma3[-7.97/14.1] Constant RV offset, PFSm/spos;arith.diffdoublejitter1[8.7/33.3] Additive RV jitter, FEROSm/sstat.stdev;phys.velocdoublejitter2[0.0009/25.2] Additive RV jitter, HARPSm/sstat.stdev;phys.velocdoublejitter3[0.234/19.6] Additive RV jitter, PFSm/sstat.stdev;phys.velocdoublejitterGaia[1.7e-06/0.2] Additive jitter in magnitude, Gaia bandsmagstat.stdev;phys.velocdoubleMstar[0.745/1.09] Stellar mass, currentsolMassphys.massdoubleTeff[5143/5446] Effective temperatureKphys.temperature.effectivedoublelogg[4.46/4.61] log, Surface gravitylog(cm.s**-2)phys.gravitydouble[Fe/H][-0.16/0.359] Metallicity, currentphys.abund.ZdoubleAVmag[0.005/0.21] Reddening, at V bandmagphot.mag.reddFree;em.opt.VdoubleJ/AJ/161/82/table1Summary of Photometric ObservationsNameIdentification of the sourcemeta.id;meta.maincharFiltFilter usedinstr.setup;instr.filtercharFieldField of viewphys.angSize;instr.fovcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintInstInstrument usedinstr.setupcharf_Inst[d] Flag on Inst (1)meta.codecharObs.Yb[2014/2020] Beginning of observation, yearyrtime.epochintObs.MbObservation begin, monthtime.epochcharObs.DbObservation begin, daydtime.epochintObs.Ye[2015/2017]? Observation end, yearyrtime.epochintnullableObs.MeObservation end, monthtime.epochcharObs.De? Observation end, daydtime.epochintnullableFlag[d] Flag on Observation time (1)meta.code.errorcharNobs[78/22351] Number of images (2)meta.numberintCad[30/1800] Cadencestime.intervalintf_Cad[b] Flag on Cad (1)meta.codecharNoteAdditional parametermeta.notecharf_Note[ace] Flag on Note (1)meta.notecharSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPosition from SIMBAD (right ascension part)degpos.eq.ra;meta.main_DEPosition from SIMBAD (declination part)degpos.eq.dec;meta.mainJ/AJ/161/82/table4Summary of Spectroscopic ObservationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource identifiermeta.id;meta.maincharInstInstrument usedinstr.setupcharf_InstFlag on Inst (1)meta.codecharObs.Yb[2017/2019] Observation begin, yearyrtime.epochintObs.MbObservation begin, monthtime.epochcharObs.DbObservation begin, daydtime.epochintObs.Ye[2018]? Observation end, yearyrtime.epochintnullableObs.MeObservation end, monthtime.epochcharObs.De? Observation end, daydtime.epochintnullableNspec[1/27] Number of spectrameta.numberintR[23/130] Resolution (2)spect.resolutionintS/Nmin[10/68]? Minimum Signal-to-Noise ratio at 5000{AA}stat.snr;stat.minfloatnullableS/Nmax[31/90]? Maximum Signal-to-Noise ratio at 5000{AA}stat.snr;stat.maxfloatnullablef_S/Nmin[c] Flag on Signal-to-Noise (1)meta.codecharWavemin[3500/5000] Minimum wavelength of observation0.1nminstr.bandwidthintWavemax[6300/9200] Maximum wavelength of observation0.1nminstr.bandwidthintJit[2.5/17]? Jitter (3)m/sstat.stdev;phys.velocfloatnullablee_Jit[1.2/4.7]? Negative error on Jitm/sstat.error;phys.veloc;stat.minfloatnullableE_Jit[1.7/9.7]? Positive error on Jitm/sstat.error;phys.veloc;stat.maxfloatnullablegamma[-16999/16983]? {gamma} parameter (3)m/sstat.paramdoublenullablee_gamma[1.4/7.3]? Negative error on gammam/sstat.errorfloatnullableE_gamma[2.9/5.5]? Positive error on gammam/sstat.error;stat.maxfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPosition from SIMBAD (right ascension part)degpos.eq.ra;meta.main_DEPosition from SIMBAD (declination part)degpos.eq.dec;meta.main