J/AJ/164/238ivo://CDS.VizieR/J/AJ/164/238doi:10.26093/cds/vizier.51640238CDSEndl M.Robertson P.Cochran W.D.MacQueen P.J.Bowler B.P.,Franson K.E.,Holcomb R.,Beard C.,Isaacson H.,Howard A.W.,Lubin J.2023-05-15T08:24:11Z2023-02-08T12:49:41ZCDS support team

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

cds-question@unistra.frm-starsexoplanetsvisible-astronomyspectroscopyradial-velocityWe report the detection of a long-period giant planetary companion to the nearby M3V star GJ463 (=Ross690). The detection is based on over ten years of highly-precise radial velocity measurements with the High Resolution Spectrograph at the Hobby-Eberly Telescope and the HIRES spectrograph at Keck. With an orbital period of 10yr and a minimum mass of 1.55{+/-}0.15MJup, GJ463b has a comparable orbital period to Jupiter and hence qualifies as a Jupiter analog around a low-mass star. We demonstrate that the radial velocity signal is not produced by a magnetic activity cycle of the host star. GJ463 was observed with TESS, and we searched the light curve for any possible signals of stellar or planetary origin, but detected none. This planet is a candidate for possible direct detection with the coronagraph of the upcoming Nancy Grace Roman Space Telescope. We compared Gaia EDR3 with Hipparcos astrometry and detected a significant acceleration, which is likely caused by this long-period planetary companion at a=3.53{+/-}0.07au.2022AJ....164..238Ehttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/164/238CatalogResearchIsServedByTAP VizieR generic servicerelated-toI/259 : The Tycho-2 Catalogue (Hog+ 2000)J/A+A/327/1039 : Structure and evolution of low-mass stars (Chabrier+ 1997)J/MNRAS/367/1329 : Elemental abundances for 176 stars (Reddy+, 2006)J/MNRAS/432/1203 : Rotation periods of M-dwarf stars (McQuillan+, 2013)J/ApJ/764/3 : H{alpha} indices in M low-mass stars (Robertson+, 2013)J/ApJS/216/7 : Planets Around Low-Mass Stars (PALMS). IV. (Bowler+, 2015)J/ApJ/807/45 : Habitable planets orbiting M dwarfs (Dressing+, 2015)J/A+A/594/A63 : International Deep Planet Survey results (Galicher+, 2016)J/ApJ/834/85 : H{alpha} emission in nearby M dwarfs (Newton+, 2017)J/AJ/155/265 : Dolar neighborhood. XLIV. RECONS discoveries (Henry+, 2018)J/A+A/612/A49 : 324 CARMENES M dwarfs velocities (Reiners+, 2018)J/A+A/631/A125 : 54 massive companions detected with SOPHIE (Kiefer+, 2019)J/A+A/625/A68 : Radii and masses of the CARMENES targets (Schweitzer+, 2019)J/AJ/159/241 : TESS-Keck Survey I HD332231 Radial Velocities (Dalba+, 2020)J/ApJS/254/42 : Hipparcos-Gaia (EDR3) Catalog Accelerations (Brandt, 2021)J/A+A/649/A6 : Gaia Catalogue of Nearby Stars (Gaia collaboration, 2021)J/A+A/645/A7 : Determining true mass of RV exoplanets Gaia (Kiefer+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/164/238https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/164/238http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/164/238https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/164/238https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/164/238http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/164/238GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/AJ/164/238/table2Differential radial velocities for GJ 463 from HET/HRS and Keck/HIRESrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJD[2454578/2459602] Barycentric Julian Datedtime.epochdoubledRVel[-28.9/43.9] Differential radial velocity (1)m/sphys.veloc;pos.heliocentric;arith.difffloate_dRVel[3/11] Uncertainty in dRVelm/sstat.errorfloatInstInstrument; HIRES or HRSmeta.id;instrchar