J/ApJ/704/964ivo://CDS.VizieR/J/ApJ/704/964doi:10.26093/cds/vizier.17040964CDSDe Becker M.Rauw G.Linder N.2017-12-22T05:32:35Z2011-12-08T15:15:57ZCDS support team

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

cds-question@unistra.frsupergiant-starso-starsearly-type-starsstellar-spectral-typesThe transition from early Of stars to WN-type objects is poorly understood. O-type supergiants with emission lines (OIf^+^) are considered to be intermediate between these two classes. The scope of this paper is to investigate the spectral variability of three Of^+^ supergiants. We constituted spectral time series of unprecedented quality for our targets (~200 spectra in total), essentially in the blue domain, covering timescales from a few hours up to a few years. Temporal Variance Spectrum and Fourier analyses were performed in order to characterize their spectral variability.2009ApJ...704..964Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/704/964CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/704/964https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/704/964http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/704/964https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/704/964https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/704/964http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/704/964GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/704/964/table3 (Stellar parameters of HD 14947, HD 15570, and HD 16691, and estimated minimum and maximum rotation periods)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/704/964/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/704/964/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/704/964/table3?GETtext/xml+votable180.050000true36.695792858.87586640.0055555555555555566/3231 3261 3307https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/704/964?format=asciiOpticaldefaultJ/ApJ/704/964/table2Journal of the observations for HD 14947, HD 15570 and HD 16691recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHDHD star number (14947, 15570, or 16691)meta.id;meta.mainintSeqRunning index number from original table of the papermeta.idintHJD? Heliocentric Julian date (-240000)dtime.epochdoublenullableDate? Date of observationtime.epochnullableDom[blue/red ] Spectral domain of observationinstr.bandpasscharJ/ApJ/704/964/table3Stellar parameters of HD 14947, HD 15570, and HD 16691, and estimated minimum and maximum rotation periodsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHDHD star number (14947, 15570, or 16691)meta.id;meta.mainintprimarySpTypeMK spectral typesrc.spTypecharMassStellar mass (1)solMassphys.massintRadStellar radius (1)solRadphys.size.radiusfloatLumStellar luminosity (1)100000solLumphys.luminosityfloatvsiniRotational velocitykm/sphys.veloc.rotatintr_vsini[bc] Vrot reference (2)meta.refcharVinfTerminal velocity V_{infty}_km/sphys.velocintr_Vinf[ed] Velocity reference (2)meta.ref;pos.framecharMdotMass-loss rate1e-05solMass.yr**-1arith.ratefloatr_Mdot[fd] M reference (2)meta.ref;pos.framecharPminMinimum rotation perioddtime.period;stat.minfloatPmaxMaximum rotation perioddtime.period;stat.maxfloatSimbadSimbad column added by the CDSchar_RAPositions from Simbad (right ascension part)degpos.eq.ra;meta.main_DEPositions from Simbad (declination part)degpos.eq.dec;meta.main