J/AJ/101/1352ivo://CDS.VizieR/J/AJ/101/1352doi:10.26093/cds/vizier.51011352CDSClement C.M.Walker I.R.2023-04-06T16:49:23Z2013-10-16T09:19:13ZCDS support team

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

cds-question@unistra.frglobular-star-clustersvariable-starsphotometryObservations of RR Lyrae variables near the transition between fundamental and first-overtone mode in the Oosterhoff type II (Oo II) globular clusters M80, M9, and NGC 2298 have been analyzed in a search for double-mode pulsators (RRd stars). These three clusters were selected because they have metal abundances that are intermediate between those of the Oo II clusters and the Oo I clusters that are known to have RRd stars. Any RRd stars identified in these three clusters would be useful for verification of a mass-metallicity relation. The analysis was based on published observations for all three clusters, and in addition, 44 CCD frames of M9 and 32 photographs of NGC 2298, all obtained with the University of Toronto telescope at Las Campanas. No new RRd stars were discovered. It is noted that the only globular clusters known to have RRd stars are the most metal poor Oo I clusters and metal poor Oo II clusters. Published observations of the RRd stars in M15 have been analyzed in order to determine accurate periods and period ratios for stars whose periods were previously considered to be uncertain.1991AJ....101.1352Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/101/1352CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/89/1707 : M9 variable stars photographic observations (Clement+, 1984)J/AJ/112/618 : CCD photometry of variable stars in M9 (Clement+, 1996)J/AJ/118/453 : M9 RR Lyrae CCD observations (Clement+, 1999)J/MNRAS/434/1220 : Vi light curves of NGC6333 variables (Arellano Ferro+, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/101/1352https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/101/1352http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/101/1352https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/101/1352https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/101/1352http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/101/1352GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/101/1352/stars (List of variables)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/101/1352/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/101/1352/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/101/1352/stars?GETtext/xml+votable180.050000true259.8262917-18.53936110.0055555555555555566/29291 29377https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/101/1352?format=asciiOpticaldefaultJ/AJ/101/1352/starsList of variablesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintVNameVariable name (VNN), Cl* NGC 6333 SAW VNN in Simbadmeta.id;meta.maincharRAJ2000Simbad Hour of Right Ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Simbad Degree of Declination (J2000.0)pos.eq.dec;meta.mainBmagSimbad B band magnitudemagphot.mag;em.opt.BfloatVmag? Simbad V band magnitudemagphot.mag;em.opt.VfloatnullablePer? Period (from the paper)dtime.perioddoublenullableLCShow the light curvemeta.ref.urlcharSimbadSimbad column added by the CDSmeta.refcharJ/AJ/101/1352/table2CCD time-series B photometry for 7 variable stars in Messier 9 (NGC 6333)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian daydtime.epoch;pos.heliocentricdoubleV1mag? B magnitude of V1magphot.mag;em.opt.VfloatnullableV4magB magnitude of V4magphot.mag;em.opt.VfloatV5magB magnitude of V5magphot.mag;em.opt.VfloatV6magB magnitude of V6magphot.mag;em.opt.VfloatV7mag? B magnitude of V7magphot.mag;em.opt.VfloatnullableV8mag? B magnitude of V8magphot.mag;em.opt.VfloatnullableV10magB magnitude of V10magphot.mag;em.opt.Vfloat