J/AJ/146/129ivo://CDS.VizieR/J/AJ/146/129doi:10.26093/cds/vizier.51460129CDSFekel F.C.Tomkin J.Williamson M.H.2017-06-21T08:22:01Z2014-07-31T12:24:54ZCDS support team

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

cds-question@unistra.frspectroscopic-binary-starsradial-velocityImproved orbital elements for four A-star double-lined spectroscopic binaries have been determined with numerous new radial velocities. Three of the four systems, HR 1528, 2 Sge, and 18 Vul, have moderately short orbital periods of 7.05, 7.39, and 9.31 days, respectively, and also have circular or nearly circular orbits. Only HR 6993 with a period of 14.68 days has a significantly eccentric orbit. The close visual companion of 2 Sge has been detected spectroscopically, and its velocity measured. The orbital dimensions (a_1_sini and a_2_sini) and minimum masses (m_1_sin^3^i and m_2_ sin^3^i) of the short-period binary components all have accuracies of 0.5% or better. We determine basic properties of the individual stars and compare them with solar-abundance evolutionary tracks to estimate their masses. Half of the eight components may be synchronously or pseudosynchronously rotating.2013AJ....146..129Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/146/129CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/sb9 : 9th Catalogue of Spectroscopic Binary Orbits (Pourbaix+ 2004-2014)I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)J/AJ/145/111 : Radial velocities of 5 spectroscopic binaries (Fekel+, 2013)J/ApJ/695/1527 : HR 8257: orbit and basic properties (Fekel+, 2009)J/AJ/117/1890 : Hipparcos binaries (Mason+, 1999)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/146/129https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/146/129http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/146/129https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/146/129https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/146/129http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/146/129GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/146/129/table1 (Basic properties of the program stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/146/129/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/146/129/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/146/129/table1?GETtext/xml+votable180.050000true72.329486132.58818970.0055555555555555566/1145 13048 30358 307123.322582951404819e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/146/129?format=asciiOpticaldefaultJ/AJ/146/129/table1Basic properties of the program starsB-V[0.067/0.25] The (B-V) color index (1)magphot.color;em.opt.B;em.opt.VfloatPlx[6.23/11.94] Parallax (2)maspos.parallaxfloatPer[7.05/14.68] Perioddtime.periodfloatVCShow the radial Velocity Curvesmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.idcharHRHR number of the starmeta.id;meta.mainintprimaryHDHD number of the starmeta.idintHIPHIP number of the star (added at CDS)meta.idintSpTSpectral typesrc.spTypecharVmag[5.51/6.27] V band magnitude (1)magphot.mag;em.opt.VfloatJ/AJ/146/129/velocitiesRadial velocities of HR 1528 , HR 6993 , HR 7369 , HR 7711recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHRSimbad column added by the CDSmeta.id;meta.maincharHJDHeliocentric Julian Date (HJD-2400000)dtime.epochdoubleb[b] Blue wavelength spectrummeta.notecharPhase[0/1] Phasetime.phasefloatRV1Primary radial velocitykm/sspect.dopplerVelocfloatw_RV1[0.2/1] Primary weightstat.weightfloatO-C1Primary (O-C) residualkm/sstat.fit.residual;stat.fit.omcfloatRV2Secondary radial velocitykm/sspect.dopplerVelocfloatw_RV2[0.02/1] Secondary weightstat.weightfloatO-C2Secondary (O-C) residualkm/sstat.fit.residual;stat.fit.omcfloatRV3? Third component radial velocity (1)km/sspect.dopplerVelocfloatnullableObsObservatory (Fair, McD, KPNO) (2)meta.id;instr.obstychar