J/AJ/149/110ivo://CDS.VizieR/J/AJ/149/110doi:10.26093/cds/vizier.51490110CDSWang X.Hummel C.A.Ren S.Fu Y.2022-11-21T11:29:00Z2015-03-23T14:48:48ZCDS support team

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

cds-question@unistra.frspectroscopic-binary-starsradial-velocityastrometryAlthough 47 Oph has been shown to be a binary with a period of ~27days using both spectroscopic and interferometric techniques, only a preliminary orbit has been obtained in the previous work due to the shortage of high precision measurements. Since 1997, new spectroscopic and interferometric measurements have been obtained with much higher precision by the spectrograph of the 2.16m telescope at Xinglong station and the Navy Precision Optical Interferometer, respectively. Combining all of the measurements, a three-dimensional orbit is obtained with high precision in this work. Thus, the component masses are calculated to be 1.50+/-0.06 and 1.34+/-0.06M_{sun}_, respectively. The orbital parallax is 32.6+/-0.6mas, which is consistent with the Hipparcos parallax. With the known apparent magnitudes and color indices of the components, the derived luminosities are 7.80+/-0.36 and 3.41+/-0.25L_{sun}_. The estimated radii of the components are 2.06+/-0.07 and 1.36+/-0.06R_{sun}_. Finally, the evolutionary status of the components are investigated with the help of a stellar evolution model.2015AJ....149..110Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/149/110CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/sb9 : 9th Catalogue of Spectroscopic Binary Orbits (Pourbaix+ 2004-2014)J/ApJS/180/117 : MK classifications of spectroscopic binaries (Abt, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/149/110https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/149/110http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/149/110https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/149/110https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/149/110http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/149/110GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/AJ/149/110/table1Observation and result log for 47 OphrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateUT date of observationtime.epoch;obscharYear[1990/2003] Fractional Julian year of observationyrtime.epoch;obsdoubleNv[15/1349] Number of measured visibilitiesmeta.numberintSep[2.98/11.4] Derived separation {rho}maspos.angDistance;src.orbitalfloatPA[0/360] Derived position angle {theta}degpos.posAngfloateMajMajor axis of the 1{sigma} uncertainty ellipsemasstat.errorfloateMinMinor axis of the 1{sigma} uncertainty ellipsemasstat.errorfloatePAPosition angle of the uncertainty ellipse {phi}degstat.error;pos.posAngfloatO-C1Deviation of the fitted relative binary separation from the model values O-C_{rho}_masstat.fit.residualfloatO-C2Deviation of the fitted relative binary position angle from the model values O-C_{theta}_degstat.fit.residualfloatJ/AJ/149/110/table4Radial-velocity measurements of 47 OphrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRV2[-82.6/30]? Secondary radial velocitykm/sspect.dopplerVelocfloatnullablef_RV2[a] Radial velocity data not used to fit the orbitmeta.codechare_RV2? 1{sigma} uncertainty in RV2km/sstat.errorfloatnullableO-C2? The secondary (O-C) valuekm/sstat.fit.residualfloatnullableRefReferencemeta.ref;pos.framecharJDJulian Date (JD-2400000)dtime.epochdoubleRV1[-26.7/81.6] Primary radial velocitykm/sspect.dopplerVelocfloatf_RV1[a] Radial velocity data not used to fit the orbitmeta.codechare_RV11{sigma} uncertainty in RV1km/sstat.errorfloatO-C1The primary (O-C) valuekm/sstat.fit.residualfloat