J/A+A/531/A49ivo://CDS.VizieR/J/A+A/531/A49doi:10.26093/cds/vizier.35310049CDSHarmanec P.Bozic H.Mayer P.Eenens P.Broz M.Wolf M.Yang S.,Slechta M.Ruzdjak D.Sudar D.Ak H.2017-07-11T13:08:19Z2011-06-09T12:40:25ZCDS support team

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

cds-question@unistra.frspectroscopic-binary-starsvisible-astronomybroad-band-photometryradial-velocityspectroscopyThe A-type star HR 6412 = V2368 Oph was used by several investigators as a photometric comparison star for the known eclipsing binary U Oph but was found to be variable by three independent groups, including us. By analysing series of new spectral and photometric observations and a critical compilation of available radial velocities, we were able to find the correct period of light and radial-velocity variations and demonstrate that the object is an eclipsing and double-lined spectroscopic binary moving in a highly eccentric orbit. We derived a linear ephemeris Tmin.I=HJD(2454294.67+/-0.01)+(38.32712+/-0.00004)d*E and estimated preliminary basic physical properties of the binary.2011A&A...531A..49Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/531/A49CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/531/A49https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/531/A49http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/531/A49https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/531/A49https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/531/A49http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/531/A49GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap3.322582951404819e-19 6.118840631666147e-19OpticaldefaultJ/A+A/531/A49/table2UBV photometry of V2368 OphrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian datedtime.epochdoubleVmagJohnson V magnitudemagphot.mag;em.opt.VfloatBmag? Johnson B magnitudemagphot.mag;em.opt.BfloatnullableUmag? Johnson U magnitudemagphot.mag;em.opt.UfloatnullablewWeight of the data pointstat.weight;phys.atmol.weightfloatObsCode of the observatory (1)meta.code;instr.obstyintJ/A+A/531/A49/table3Radial velocities of V2368 OphrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian datedtime.epochdoubleRV1Radial velocity of the primarykm/sspect.dopplerVelocfloatRV2? Radial velocity of the secondary (2)km/sspect.dopplerVelocfloatnullablewWeight of the data point (not given for the velocities of H{alpha} measured with the SPEFO program)stat.weightfloatnullableLine[MgII Ha SiII] Line (G1) (2)meta.id;spect.linecharJ/A+A/531/A49/rjdList of H{alpha}, SiII and MgII spectrarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlam.minLower limit of wavelength range0.1nmem.wl;stat.minintlam.maxUpper limit of wavelength range0.1nmem.wl;stat.maxintLine[MgII Ha SiII] Line (G1)meta.id;spect.linecharFileNameFilename of individual spectrameta.id;meta.filecharHJDHeliocentric Julian datedtime.epochdoublewweights of individual spectra from S/Nstat.weightfloatspPlot the spectrummeta.ref.urlchar