J/AJ/160/141ivo://CDS.VizieR/J/AJ/160/141doi:10.26093/cds/vizier.51600141CDSWang X.Xia F.Fu Y.2022-03-08T08:50:30Z2020-11-30T11:53:02ZCDS support team

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

cds-question@unistra.frmultiple-starsastrometrybet LMi is a double-lined visual binary with an orbital period of ~39yr. Via a simultaneous fitting to both astrometric and radial velocity measurements, we give a complete and improved orbit solution with high precision. Then, the component masses are precisely determined as 2.98{+/-}0.10M{sun} and 1.92{+/-}0.04M{sun} with a relative precision of ~3%, respectively. The orbital parallax is determined to be 19.6{+/-}0.2mas, which is two times more precise than Hipparcos parallax. With the known apparent magnitudes and magnitude difference of the components, we derive the luminosity of the components as 50.7{+/-}1.8L{sun} and 9.1{+/-}4.1L{sun}. The estimated radii of the components are 9.4{+/-}0.3R{sun} and 3.7{+/-}1.5R{sun}.2020AJ....160..141Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/160/141CatalogResearchIsServedByTAP VizieR generic servicerelated-toI/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)J/AJ/106/1639 : Speckle observations of binary stars (McAlister+ 1993)J/A+AS/105/503 : Binary star speckle measurements (Balega+ 1994)J/AJ/108/2299 : ICCD speckle obs. of binary stars. XI. (Hartkopf+, 1994)J/ApJ/469/355 : Teff, B-V and BC relation (Flower, 1996)J/A+A/341/121 : Visual binary orbits and masses (Soederhjelm 1999)J/A+AS/141/371 : Low-mass stars evolut. tracks & isochrones (Girardi+,2000)J/AJ/119/3084 : ICCD speckle obs. of binary stars. XXIII. (Hartkopf+, 2000)J/AJ/119/1448 : Improved properties for cool stars (Houdashelt+, 2000)J/AJ/127/1727 : Differential magnitudes of binary stars (Horch+, 2004)J/AJ/135/209 : Rotational and RVs 761 HIP giants (Massarotti+, 2008)J/MNRAS/395/907 : PISCO speckle observations in 2007 (Prieur+, 2009)J/AJ/140/1579 : PHASES differential astrometry data (Muterspaugh+, 2010)J/AJ/142/176 : Exoplanet host stars.II. Speckle interferometry (Mason+,2011)J/AJ/149/110 : Radial velocities of 47 Oph (Wang+, 2015)J/ApJ/817/40 : High-resolution NIR spectra of local giants (Feuillet+, 2016)J/A+A/585/A73 : PTPS stars. III. The evolved stars sample (Niedzielski+,2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/160/141https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/160/141http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/160/141https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/160/141https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/160/141http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/160/141GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/AJ/160/141/table2The relative astrometric measurements, adopted errors and residuals in the rectangular coordinatesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEpoch[1935/2013] Besselian year of the epoch of observationyrtime.epochdoublex[-0.43/0.1] x position offsetarcsecpos.cartesian.x;instr.detdoublee_x[0.001/0.05] Uncertainty in xarcsecstat.error;pos.cartesian.xdouble(O-C)x[-0.06/0.06] Residual in xarcsecstat.fit.residualdoubley[-0.44/0.09] y position offsetarcsecpos.cartesian.y;instr.detdoublee_y[0.002/0.06] Uncertainty in yarcsecstat.error;pos.cartesian.ydouble(O-C)y[-0.06/0.05] Residual in yarcsecstat.fit.residualdouble