J/A+A/525/A16ivo://CDS.VizieR/J/A+A/525/A16doi:10.26093/cds/vizier.35250016CDSPaunzen E.Hensberge H.Maitzen H.M.Netopil M.Trigilio C.Fossati L.,Heiter U.Pranka M.2017-09-22T16:15:48Z2010-12-02T09:09:02ZCDS support team

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

cds-question@unistra.fropen-star-clustersvariable-starsvisible-astronomymedium-band-photometryPhotometric variability of chemically peculiar (CP) stars of the upper main sequence is closely connected to their local stellar magnetic field and their rotational period. Long term investigations, as presented here, help us to identify possible stellar cycles (as in the Sun). Photoelectric Stroemgren uvby time series for 27 CP stars within the boundaries of open clusters are presented. Our observations cover a time period of about six years (1986 to 1992) with typically fifteen measurements for each objects. These observations help us to determine the rotational periods of these objects. We established, for the first time, variability for fourteen CP stars. For additional two stars, a merging of already published data sets, resulted in more precise periods, whereas for six objects, the published periods could be confirmed. Last, but not least, no significant variations were found for five stars. Apart from six stars, all targets seem to be members of their host open clusters.2011A&A...525A..16Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/525/A16CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-tohttp://www.univie.ac.at/webda : WEBDA Home Pagehttp://astro.physics.muni.cz/mcpod : mCPod Home Pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/525/A16https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/525/A16http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/525/A16https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/525/A16https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/525/A16http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/525/A16GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/525/A16/stars (Star positions (from Simbad))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/525/A16/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/525/A16/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/525/A16/stars?GETtext/xml+votable180.050000true108.827917-31.9097220.0055555555555555566/28711 28717 28806-28807 29081 29084 37349 37351 37592-37593 37933 37944 38067 38073 39826 41863 42464 43279 433013.322582951404819e-19 4.920466254354166e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/525/A16?format=asciiOpticaldefaultJ/A+A/525/A16/starsStar positions (from Simbad)NameStar namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClusterCluster namemeta.id.parentcharWWEBDA star number in clustermeta.idintRAJ2000Simbad Hour of Right Ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Simbad Degree of Declination (J2000.0)pos.eq.dec;meta.mainBmag? Simbad B band magnitudemagphot.mag;em.opt.BfloatnullableVmag? Simbad V band magnitudemagphot.mag;em.opt.VfloatnullableSpTypeSimbad MK spectral typesrc.spTypecharPer? Period (from table1 of the paper)dtime.perioddoublenullableu_Per[?] Uncertainty flag on Permeta.code.errorcharLCPlot the light curvemeta.ref.urlcharFileNameName of the file with light curves in subdirectory lcmeta.id;phys.composition.massLightRatio;meta.filecharSimbadSimbad column added by the CDSchar