J/PAZh/40/221ivo://CDS.VizieR/J/PAZh/40/221CDSBerdnikov L.N.Majaess D.2017-06-01T08:52:52Z2014-06-10T09:59:25ZCDS support team

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

cds-question@unistra.frvariable-starsvisible-astronomyWide-band photometryFor the classical Cepheid U Sgr, we have constructed an O-C diagram spanning a time interval of 144 years. The O-C diagram has the shape of a parabola, which has made it possible to determine for the first time the quadratic light elements and to calculate the rate of evolutionary increase in the period, dP/dt=0.39(+/-0.10)s/yr, in agreement with the results of theoretical calculations for the third crossing of the instability strip. The available data reduced by the Eddington-Plakidis method reveal small random period fluctuations that do not distort the evolutionary trend in the O-C residuals.2014PAZh...40..221Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/PAZh/40/221CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/AZh/98/299 : FF Aql BV light curves (Berdnikov+, 2014)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/PAZh/40/221https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/PAZh/40/221http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/PAZh/40/221https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/PAZh/40/221https://vizier.iucaa.in/viz-bin/votable?-source=J/PAZh/40/221http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/PAZh/40/221GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/PAZh/40/221/table2Standard B and V light curves for U SgrrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPhasePhasetime.phasefloatBmagB magnitudemagphot.mag;em.opt.BfloatVmagV magnitudemagphot.mag;em.opt.Vfloat