J/A+AS/140/79ivo://CDS.VizieR/J/A+AS/140/79CDSImbert M.2017-09-29T09:03:53Z2015-07-28T12:48:11ZCDS support team

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

cds-question@unistra.frvariable-starsradial-velocityWe present radial velocity data for 22 galactic Cepheid stars obtained with Coravel spectrometer. Continuous observation over several years has enabled us to obtain 852 individual velocities covering all the phases of the pulsation. The mean number of measurements per star is 39, ranging from 20 to 113. For each star radial velocity versus phase diagrams have been fitted by analytical relation, and the stellar radius variation has been derived by integration of this relation over the whole period. Using recent ubv photometry of the literature and velocity curves, we have calculated the radii of the stars using a method based on the Baade-Wesselink concept. For these 22 Cepheids we give a linear logarithmic period-radius relation with a range of 2,4 to 45 days.1999A&AS..140...79Ihttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/140/79CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/140/79https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/140/79http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/140/79https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/140/79https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/140/79http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/140/79GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+AS/140/79/object (Sample of the Cepheids observed)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+AS/140/79/object?https://vizier.iucaa.in/viz-bin/conesearch/J/A+AS/140/79/object?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+AS/140/79/object?GETtext/xml+votable180.050000true287.0572951.29865560.0055555555555555566/1426 1920 3005 3600 13933 14047 14260 14409 14625 14637 14718 14770 22438 23619 23660 23778 23852 23936 24372 30321 32012 32170https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+AS/140/79?format=asciiOpticaldefaultJ/A+AS/140/79/objectSample of the Cepheids observedVPVelocity Plotmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of the Cepheid starmeta.id;meta.maincharNobsNumber of observationsmeta.numberintnullablePer[1.3/45.1] Period (1)dtime.perioddoublee_Per? Uncertainty in Per (1)dstat.errordoublenullableSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from SIMBAD database (right ascension part)degpos.eq.ra;meta.main_DEPositions from SIMBAD database (declination part)degpos.eq.dec;meta.mainJ/A+AS/140/79/table1Observed radial velocities, O-C and phasesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharObsUT date of observationstime.epoch;obsnullableHJDHeliocentric Julian datedtime.epochdoubleRV[-65/108] Observed radial velocitykm/sphys.veloc;pos.heliocentricfloate_RV[0.11/1.86]? Standard error of RVkm/sstat.errorfloatnullableO-C[-11/36] Observed-calculated radial velocitykm/sstat.fit.residual;phys.velocfloatPhase[-1.72/2.231] Phasetime.phasefloat