J/A+A/383/197ivo://CDS.VizieR/J/A+A/383/197doi:10.26093/cds/vizier.33830197CDSLyytinen J.Johansson P.,L.JetsuEsko E.Hackman T.Hall D.S.,Henry G.W.Kontinen S.Koenoenen P.Maisala S.Palviainen A.,Ryynaenen K.2002-03-07T21:03:34Z2002-03-07T22:03:26ZCDS support team

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

cds-question@unistra.frvariable-starsmultiple-starsvisible-astronomybroad-band-photometryOur time series analysis of sixteen BV light curves of the chromospherically active binary V511 Lyr confirmed the 2.7days rotation period uniquely. The seasonal periodicity changes of 3.8% indicated the presence of detectable surface differential rotation. The significant 2.67455days periodicity in the light curve minimum epochs suggested that the strongest starspot formation in V511 Lyr was concentrated on one stable active longitude. The differential BV photometry of V511 Lyr was made between May 1994 and June 1996 with the Vanderbilt-Tennessee State 0.4m Automated Photoelectric Telescope (APT). The comparison and check stars were HDE 337663 (C1) and HD 179422 (C2).2002A&A...383..197Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/383/197CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/383/197https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/383/197http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/383/197https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/383/197https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/383/197http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/383/197GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/383/197/table2Individual Johnson B and V differential magnitudesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSetSubset number from Table 1 (1)meta.idintHJDHeliocentric Julian Date for each observation.dtime.epochdoubleBmag? Johnson B differential magnitude, in the sense variable minus comparison star (2)magphot.mag;em.opt.BfloatnullableVmag? Johnson V differential magnitude, in the sense variable minus comparison star (2)magphot.mag;em.opt.Vfloatnullable