J/AJ/120/2101ivo://CDS.VizieR/J/AJ/120/2101doi:10.26093/cds/vizier.51202101CDSMarchenko S.V.Arias J.Barba R.Balona L.Moffat A.F.J.Niemela V.S.,Shara M.M.Sterken C.2023-04-06T16:50:39Z2007-11-25T14:08:04ZCDS support team

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

cds-question@unistra.frwolf-rayet-starsphotometryspectroscopyradial-velocityIntense coordinated spectroscopic and photometric monitoring of the suspected Wolf-Rayet binary WR 46 in 1999 reveals clear periodic variations, P=0.329+/-0.013 days, in the radial velocities of the emission lines of highest ionization potential, O VI and N V, found deepest in the Wolf-Rayet wind and thus least likely to be perturbed by a companion. These are accompanied by coherent variability in the profiles of lines with lower ionization/excitation potential and in the continuum flux. Most probably originating from orbital motion of the Wolf-Rayet component of the binary, this periodic radial velocity signal disappears from time to time, thus creating a puzzle yet to be solved. We show that the entangled patterns of the line profile variability are mainly governed by transitions between high and low states of the system's continuum flux. Based in part on observations obtained at the European Southern Observatory, La Silla, Chile (ESO program 62.H-0110).2000AJ....120.2101Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/120/2101CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/120/2101https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/120/2101http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/120/2101https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/120/2101https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/120/2101http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/120/2101GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/AJ/120/2101/table1Radial velocity measurementsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJDJulian date of observationdtime.epochdoubleRV1Radial velocity of the He II + N V 4603-4686 {AA} complexkm/spos.cartesian.yinte_RV1Uncertainty in RV1km/sstat.errorintRV2Radial velocity of the deblended O VI 3811,3834 {AA} doubletkm/sspect.dopplerVelocintRV3Radial velocity of the N V 4943,4945 {AA} blendkm/spos.cartesian.yintJ/AJ/120/2101/table2UBVRI Photometry of WR 46recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJDJulian date of observationdtime.epochdoubleVmagThe V band magnitudemagphot.mag;em.opt.VfloatB-VThe B-V colormagphot.color;em.opt.B;em.opt.VfloatU-BThe U-B colormagphot.color;em.opt.U;em.opt.BfloatV-RThe V-R colormagphot.color;em.opt.V;em.opt.RfloatV-IThe V-I colormagphot.color;em.opt.V;em.opt.IfloatJ/AJ/120/2101/table3by Photometry of WR 46recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJD(b)? Julian date of the b band observationdtime.epochdoublenullableb(WR-c1)? Differential Stromgren b photometry: WR 46 - GSC 8978-443magphot.mag;em.opt.Bfloatnullableb(c1-c2)? Differential Stromgren b photometry: GSC 8978-443 - c2 (1)magphot.mag;em.opt.BfloatnullableJD(y)? Julian date of the y band observationdtime.epochdoublenullabley(WR-c1)? Differential Stromgren y photometry: WR 46 - GSC 8978-443magphot.mag;em.opt.Vfloatnullabley(c1-c2)? Differential Stromgren b photometry: GSC 8978-443 - c2 (1)magphot.mag;em.opt.Bfloatnullable