J/A+AS/136/515ivo://CDS.VizieR/J/A+AS/136/515CDSLi Z.P.Fang M.J.1999-05-14T13:21:13Z1999-05-14T13:21:07ZCDS support team

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

cds-question@unistra.frvariable-starsapparent-magnitudeA period analysis of the data obtained in six nights of differential photoelectric photometry of the {delta} Scuti star DQ Cephei (about 42 hours) confirms the pulsation modes of f_1_=8.0480 cycle per day and f_2_=12.6826 cycle per day. The result adjusts well to the observations that cover a time span of 46 years. Comparing with the results obtained for different years, we discovered obvious amplitude variations of the two modes. These amplitude variations show phase differences of almost 180 degrees. The variation period probably is longer than 46 years.1999A&AS..136..515Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/136/515CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/136/515https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/136/515http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/136/515https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/136/515https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/136/515http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/136/515GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+AS/136/515/table4Photoelectric measurements of DQ Cephei relative to SAO 33038 (1997)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJHDHeliocentric Julian datedtime.epochdoubleVmagV magnitude relative to SAO 33038magphot.mag;em.opt.Vdouble