J/A+A/515/A16ivo://CDS.VizieR/J/A+A/515/A16doi:10.26093/cds/vizier.35150016CDSSaesen S.Carrier F.Pigulski A.Aerts C.Handler G.Narwid A.,Fu J.N.Zhang C.Jiang X.J.Vanautgaerden J.Kopacki G.Steslicki M.,Acke B.Poretti E.Uytterhoeven K.Gielen C.Ostensen R.De Meester W.,Reed M.D.Kolaczkowski Z.Michalska G.Schmidt E.Yakut K.Leitner A.,Kalomeni B.Cherix M.Spano M.Prins S.Van Helshoecht V.Zima W.,Huygen R.Vandenbussche B.Lenz P.Ladjal D.Puga Antolin E.,Verhoelst T.De Ridder J.Niarchos P.Liakos A.Lorenz D.Dehaes S.,Reyniers M.Davignon G.Kim S.-L.Kim D.H.Lee Y.-J.Lee C.-U.,Kwon J.-H.Broeders E.Van Winckel H.Vanhollebeke E.Waelkens C.,Raskin G.Blom Y.Eggen J.R.Degroote P.Beck P.Puschnig J.,Schmitzberger L.Gelven G.A.Steininger B.Blommaert J.Drummond R.,Briquet M.Debosscher J.2010-07-14T08:37:55Z2010-06-03T17:27:39ZCDS support team

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

cds-question@unistra.fropen-star-clustersvariable-starsccd-photometryvisible-astronomynarrow-band-photometryRecent progress in the seismic interpretation of field beta Cep stars has resulted in improvements of the physics in the stellar structure and evolution models of massive stars. Further asteroseismic constraints can be obtained from studying ensembles of stars in a young open cluster, which all have similar age, distance and chemical composition. To improve our comprehension of the beta Cep stars, we studied the young open cluster NGC 884 to discover new B-type pulsators, besides the two known beta Cep stars, and other variable stars. An extensive multi-site campaign was set up to gather accurate CCD photometry time series in four filters (U, B, V, I) of a field of NGC 884. The images were calibrated and reduced to transform the CCD frames into interpretable light curves. Various variability indicators and frequency analyses were applied to detect variable stars in the field.2010A&A...515A..16Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/515/A16CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/515/A16https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/515/A16http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/515/A16https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/515/A16https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/515/A16http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/515/A16GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/515/A16/sources (Overview of the variable stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/515/A16/sources?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/515/A16/sources?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/515/A16/sources?GETtext/xml+votable180.050000true35.53562557.1244440.0055555555555555566/3256-3257https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/515/A16?format=asciiOpticaldefaultJ/A+A/515/A16/sourcesOverview of the variable starsAmp? Amplitudemagphot.magfloatnullableSeqStar sequential numbermeta.recordintLCPlot of the light curvesmeta.ref.urlcharWEBDA? WEBDA numbermeta.idintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_Seq[kn] known or new for eclipsing binarymeta.notecharWEBDA2? Second WEBDA numbermeta.idintnullableRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainSpTypeMK spectral typesrc.spTypecharVmag? Geneva V magnitudemagphot.mag;em.opt.VfloatnullableB2-V1? Geneva B2-V1 colour indexmagphot.magfloatnullableB2-U? Geneva B2-U colour indexmagphot.magfloatnullableFreq? Main frequency in day^-1^d**-1em.freq;meta.mainfloatnullableFreq2? Main frequency in {mu}HzuHzem.freq;meta.mainfloatnullablePer1? Period for eclipsing binary, if existdtime.periodfloatnullablePer2Other possible periods for Seq 02217time.periodchar