J/AJ/154/120ivo://CDS.VizieR/J/AJ/154/120doi:10.26093/cds/vizier.51540120CDSFekel F.C.Henry G.W.Tomkin J.2018-09-25T13:11:36Z2018-06-12T14:10:18ZCDS support team

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

cds-question@unistra.frmultiple-starsstellar-spectral-typesvisible-astronomyWide-band photometrytrigonometric-parallaxradial-velocityFrom an extensive number of newly acquired radial velocities we determine the orbital elements for three late-type dwarf systems, HD 96511, HR 7578, and KZ And. The orbital periods are 18.89737+/-0.00002, 46.81610+/-0.00006, and 3.0329113+/-0.0000005 days, respectively, and all three systems are eccentric, although KZ And is just barely so. We have detected lines of the secondary of HD 96511 for the first time. The orbital dimensions (a_1_ sin i and a_2_ sin i) and minimum masses (m_1_ sin^3^i and m_2_ sin^3^i) of the binary components all have accuracies of 0.2% or better. Extensive photometry of the chromospherically active binary HR 7578 confirms a rather long rotation period of 16.446+/-0.002 days and that the K3 V components do not eclipse. We have estimated the basic properties of the stars in the three systems and compared those results with evolutionary tracks. The results for KZ And that we computed with the revised Hipparcos parallax of van Leeuwen (Cat. I/311) produce inconsistencies. That parallax appears to be too large, and so, instead, we used the original Hipparcos parallax of the common proper motion primary, which improves the results, although some problems remain.2017AJ....154..120Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/154/120CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)J/AJ/146/129 : Orbits of 4 double-lined spectroscopic binaries (Fekel+, 2013)J/AJ/149/63 : Radial velocities of HD 54371, HR 2692, and 16 UMahttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/154/120https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/154/120http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/154/120https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/154/120https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/154/120http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/154/120GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/154/120/table1 (Basic Properties of the Program Stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/154/120/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/154/120/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/154/120/table1?GETtext/xml+votable180.050000true167.729745881.73166610.0055555555555555566/8060 13802 487683.322582951404819e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/154/120?format=asciiOpticaldefaultJ/AJ/154/120/table1Basic Properties of the Program StarsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharHR[7578]? HR star numbermeta.idintnullableHD[96511/218738] HD star numbermeta.idintSpTypeMK spectral typesrc.spTypecharVmag[6.18/7.91] Johnson V band magnitudemagphot.mag;em.opt.VfloatB-V[0.7/1.02] Johnson B-V color indexmagphot.color;em.opt.B;em.opt.Vfloate_B-V[0.007/2.31] Uncertainty in B-Vmagstat.error;phot.color;em.opt.BfloatPlx[21.88/71.18] Parallaxmaspos.parallaxfloate_Plx[0.0000005/0.40] Uncertainty in Plxmasstat.error;pos.parallaxdoublePer[3.03291/46.8161] Perioddtime.perioddoublee_Per[0.00002]? Uncertainty in Perdstat.errordoublenullableRVDisplay radial velocities for this starmeta.ref.urlcharVCVelocity curvesmeta.ref.urlcharSimbadNameSimbad column added by the CDSmeta.idchar_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.mainJ/AJ/154/120/VelocitiesRadial velocities of HD 96511 (table 2) , HR 7578 (table 4) and KZ And (table 6)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar namemeta.id;meta.maincharHJD[52965.582/57886.917] Heliocentric Julian Date (HJD-2400000)dtime.epochdoublePhase[0/0.999] Fractional phasetime.phasefloatRV1[-85.5/64.8] Radial velocity of primarykm/sspect.dopplerVelocfloat(O-C)1[-0.9/0.7] Velocity residual of primarykm/sstat.fit.residual;phys.velocfloatw_RV1[0.3/1] Weight of primary velocitystat.weight;phys.velocfloatRV2[-122.8/65.1] Radial velocity of secondarykm/sspect.dopplerVelocfloat(O-C)2[-1/1.2] Velocity residual of secondarykm/sstat.fit.residual;phys.velocfloatw_RV2[0.15/1] Weight of secondary velocitystat.weight;phys.velocfloatObsObservatory source (Fair, McD, KPNO) (1)meta.id;instr.obstycharJ/AJ/154/120/table8Photometric Observations of HR 7578recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD[47276.9765/50642.8007] Heliocentric Julian Date (HJD-2400000)time.epochdoubleVarB[-2.045/-1.927]? Variable - Comparison differential magnitude in B (1)magphot.mag;arith.difffloatnullableVarV[-1.777/-1.678]? Variable - Comparison differential magnitude in V (1)magphot.mag;arith.difffloatnullableChkB[-3.812/-3.747]? Check - Comparison differential magnitude in B (1)magphot.mag;arith.difffloatnullableChkV[-3.297/-3.218]? Check - Comparison differential magnitude in V (1)magphot.mag;arith.difffloatnullable