J/AJ/134/1916ivo://CDS.VizieR/J/AJ/134/1916doi:10.26093/cds/vizier.51341916CDSTorres G.2017-06-02T08:37:19Z2010-03-08T13:58:43ZCDS support team

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

cds-question@unistra.frspectroscopic-binary-starsastrometryThe previously known, 6yr single-lined spectroscopic binary HR 6046 has been speculated in the past to contain a compact object as the secondary. A recent study has redetermined the orbit with great accuracy and shown that the companion is an evolved but otherwise normal star of nearly identical mass to the primary, which is also a giant. The binary motion was detected by the Hipparcos mission but was not properly accounted for in the published astrometric solution. Here we use the Hipparcos intermediate data in combination with the spectroscopic results to revise that solution and establish the orbital inclination angle for the first time, and with it the absolute masses M_A_=1.38^+0.09^_-0.03_M_{sun}_ and M_B_=1.36^+0.07^_-0.02_M_{sun}_. Aided by other constraints, we investigate the evolutionary status and confirm that the primary star is approaching the tip of the red giant branch, while the secondary is beginning its first ascent.2007AJ....134.1916Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/134/1916CatalogResearchIsServedByTAP VizieR generic servicerelated-toI/239 : The Hipparcos and Tycho Catalogues (ESA 1997)J/A+A/464/377 : HIP binaries with radial velocities (Frankowski+, 2007)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/134/1916https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/134/1916http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/134/1916https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/134/1916https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/134/1916http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/134/1916GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/AJ/134/1916/table1Hipparcos intermediate astrometric data for HR 6046PhaseOrbital phasetime.phasefloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian date of observationdtime.epochdoubleObsDateDate of observation in decimal yearsyrtime.epoch;obsdoubleDVAbscissa residual (1)masstat.fit.residualfloate_DVrms uncertainty on DVmasstat.errorfloatO-CO-C for abscissa residual (1)masstat.fit.residualfloatCons[NF] Consortium NDAC or FASTmeta.id;instr.obstychar