J/AJ/162/176ivo://CDS.VizieR/J/AJ/162/176doi:10.26093/cds/vizier.51620176CDSParedes L.A.Henry T.J.Quinn S.N.Gies D.R.Hinojosa-goni R.,James H.-S.Jao W.-C.White R.J.2024-10-11T20:10:08Z2022-02-04T07:37:08ZCDS support team

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

cds-question@unistra.frdwarf-starsk-starsexoplanetsvisible-astronomyspectroscopyradial-velocityWe report initial results of a large radial velocity survey of K dwarfs up to a distance of 50pc from the solar system, to look for stellar, brown dwarf, and Jovian planets using radial velocities from the CHIRON spectrograph on the CTIO/SMARTS 1.5m telescope. We identify three new exoplanet candidates orbiting host stars in the K dwarf survey and confirm a hot Jupiter from TESS orbiting TOI129. Our techniques are confirmed via five additional known exoplanet orbiting K dwarfs, bringing the number of orbital solutions presented here to 9, each hosting an exoplanet candidate with a minimum mass of 0.5-3.0M_Jup_. In addition, we provide a list of 186 nearby K dwarfs with no detected close companions that are ideal for more sensitive searches for lower-mass planets. This set of stars is used to determine CHIRON's efficiency, stability, and performance for radial velocity work. For K dwarfs with V=7-12, we reach radial velocity precisions of 5-20m/s under a wide range of observing conditions. We demonstrate the stability of CHIRON over hours, weeks, and years using radial velocity standards, and describe instrumental capabilities and operation modes available for potential users.2021AJ....162..176Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/162/176CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/wds : The Washington Visual Double Star Catalog (Mason+ 2001-2020)B/sb9 : SB9: 9th Catalogue of Spectroscopic Binary Orbits (Pourbaix+ 2004-2014)I/259 : The Tycho-2 Catalogue (Hog+ 2000)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)V/122 : SB9: 9th Catalogue of Spectroscopic Binary Orbits (Pourbaix+ 2005)I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)IV/34 : K2 Ecliptic Plane Input Catalog (EPIC) (Huber+, 2017)J/A+A/546/A69 : Orbits of visual binaries and dynamical masses (Malkov+, 2012)J/AJ/147/87 : From binaries multiples. II. Statistical data (Tokovinin, 2014)J/ApJ/799/4 : Robo-AO observations of binary stars (Riddle+, 2015)J/AJ/153/208 : LCES HIRES/Keck radialvelocity Exoplanet Survey (Butler+, 2017)J/AJ/153/257 : Comoving stars in Gaia DR1 (Oh+, 2017)J/AJ/155/265 : The solar neighborhood. XLIV. RECONS discoveries (Henry+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/162/176https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/162/176http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/162/176https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/162/176https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/162/176http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/162/176GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/162/176/tablea3 (198 K dwarfs with RV curves)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/162/176/tablea3?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/162/176/tablea3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/162/176/tablea3?GETtext/xml+votable180.050000true11.270391671.785522220.0055555555555555566/4 161 259 610 914 2052 2086 2092 2144 2149 4099 4143 4555 4593 4642 4796 4808 4866 4917 5251 6187 6281 6287 8219 8283 8357 8433 8773 8794 8821 8910 8915 9038 9093 9128 12446 12916 12983 13036 13081 13383 14339 16657 16692 16832 17158 17161 17363 17442 17572 17662 17777 17954 18056 18115 18379 18785 18929 19063 19488 19780 19816 19822 19836 20158 20298 20372 20676 20820 20929 21047 21058 21197 21392 21546 21647 21838 22254 22363 22475 22552 22566 22684 22836 22903 22976 23450 23582 23657 23787 23935 23947 24099 24252 24323 24388 24755 24777 24782 24816 24975 25059 25091 25139 25306 25342 25591 25678 25814 25820 25865 25939 26020 26186 26440 26468 26651 26997 27109 27176 27217 27260 27329 27335 27443 27462 27592 27752 27786 28233 28244 28268 28344 28373 28480 28788 29213 29430 29493 29563 29642 29899 30008 30015 30200 30310 30345 30377 30464 30490 30612 30645 30668 30759 30774 30849 31254 31415 31490 31730 31758 31832 31956 31998 32055 32126 32224 32584 32652 34986 35756 35774 35786 35802 36547 36564 36577 36679 36752 38870 40167 40404 40637 40717 44005 44233 44284 44306 44482 44655 44860 44967 45013 45021 48711 48768 49128https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/162/176?format=asciiOpticaldefaultJ/AJ/162/176/table2Orbital parameters of exoplanet candidatesRVInteractive Plotmeta.ref.urlcharRMS[9.9/26.1]? Velocity RMSm/sstat.stdev;phys.velocfloatnullableData[9/182] Data pointsmeta.numberintRef[1/7] References used (1)meta.ref;instr.setupintNRVelNumber of radial velocities measurements (tablea2)meta.numberintnullableHIPHIP identifiermeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStatutStatut; Previously known, TESS, or New candidatemeta.codecharMass[0.62/0.93] Stellar masssolMassphys.massfloatPer[0.98/160] Perioddtime.periodfloate_Per[0.0005/2.93]? Negative error on Perdstat.errorfloatnullableE_Per[0.0004/2.68]? Positive error on Perdstat.error;stat.maxfloatnullablemsini[0.48/3.21] Mass compared to Jupiter(1.898187x10+27kg)phys.massfloatf_e[<] Flag on emeta.codechare[0/0.31] Eccentricitysrc.orbital.eccentricityfloatomega[0/292]? Argument of perihelion ({omega})degsrc.orbital.periastronfloatnullableRVel[41.1/754] Radial velocity amplitudem/sphys.veloc;pos.heliocentricfloate_RVel[2.2/19.6]? Negative error on RVelm/sstat.error;spect.dopplerVelocfloatnullableE_RVel[2.1/34.5]? Positive error on RVelm/sstat.error;stat.maxfloatnullablea[0.01/0.5] Semi-major axisauphys.angSize.smajAxis;src.orbitalfloatJD[1287/8369]? Date of observation; JD-2450000dtime.epochdoublenullableJ/AJ/162/176/tablea1CHIRON radial velocities of K-dwarf radial velocity standardsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintf_HIP[*] Flag marks HP073184 within a nightmeta.codecharBJD[7929/8831] Barycentric Julian Date; BJD-2450000dtime.epochdoublef_BJD[*] Flag marks the reference epochmeta.codecharRVel[-49.1/50.7] Radial velocitym/sphys.veloc;pos.heliocentricfloate_RVel[0.1/19.6] Error on radial velocitym/sstat.error;spect.dopplerVelocfloatRVInteractive Plotmeta.ref.urlcharHIPHIP identifiermeta.id;meta.maincharJ/AJ/162/176/tablea2CHIRON radial velocities of known and new planet candidatesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJD[7928/8862] Barycentric Julian Date; BJD-2450000dtime.epochdoublef_BJD[*] Flag marks the reference epochmeta.codecharRVel[-738/759] Radial velocitym/sphys.veloc;pos.heliocentricfloate_RVel[2.2/39.2] Error on radial velocitym/sstat.error;spect.dopplerVelocfloatHIPHIP identifiermeta.id;meta.maincharJ/AJ/162/176/tablea3198 K dwarfs with RV curvesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStatutRVel standard, kown planet, new planet candidates, or flat RVel curvesmeta.codecharHIPHIP identifiermeta.id;meta.maincharprimaryRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainplx[18.2/172] Parallaxmaspos.parallax.trigfloatVmag[5.75/11.4] V-band magnitudemagphot.mag;em.opt.VfloatKmag[3.8/8.29]? K-band magnitudemagphot.mag;em.IR.KfloatnullableV-K[1.81/3.74]? V-K colormagphot.color;em.opt.V;em.IR.KfloatnullableVMAG[5.53/8.92] V-band absolute magnitudemagphot.magfloatRVel[4.5/431] RVel median absolute deviationm/sphys.veloc;pos.heliocentricfloatNObs[3/77] Number of observationsmeta.numberintSpan[2/896] Time spandtime.intervalintNplparamNumber of planet candidates with orbital parameters (table2)meta.numberintnullableNstdNumber of CHIRON radial velocities as a velocity standard (tablea1)meta.numberintnullableNplNumber of CHIRON radial velocities as a candidate planet host (tablea2)meta.numberintnullableSimbadSimbad column added by the CDSmeta.ref.urlchar