J/AJ/130/1640ivo://CDS.VizieR/J/AJ/130/1640doi:10.26093/cds/vizier.51301640CDSWu C.Qiu Y.L.Deng J.S.Hu J.Y.Zhao Y.H.2006-10-13T22:39:52Z2006-10-13T22:35:34ZCDS support team

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

cds-question@unistra.frvariable-starsccd-photometryWe present unfiltered CCD photometry of a sample of 71 candidate RR Lyrae stars during 2003 and 2004, out of 148 candidate stars that were selected from Sloan Digital Sky Survey (SDSS) commissioning data by Ivezic and coworkers (2000AJ....120..963I). We obtain light curves of 69 candidate stars and present a catalog of their positions, amplitudes, periods, types, and mean magnitudes. We confirm that the 69 stars are true RR Lyrae variables based on periods and light curves, for the first time for 41 of them. We identify 57 type ab, 11 type c, and 1 type d (double-mode) in our sample. The double-mode RR Lyrae star shows properties similar to globular cluster stars and are unlike field stars of the Galactic halo in the Petersen diagram.2005AJ....130.1640Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/130/1640CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/PASP/109/524 : Light Curves for 40 RR Lyraes (Layden 1997)J/ApJ/542/257 : MACHO LMC first-overtone RR Lyrae (Alcock+, 2000)J/AJ/127/1158 : QUEST RR Lyrae Survey first catalog (Vivas+, 2004)http://www.sdss.org : SDSS Home Pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/130/1640https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/130/1640http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/130/1640https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/130/1640https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/130/1640http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/130/1640GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/130/1640/table1 (RR Lyrae stars (one with two different modes))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/130/1640/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/130/1640/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/130/1640/table1?GETtext/xml+votable180.050000true162.2608751.08350.0055555555555555565/7849 6/25598 25854 25918 25939 25945 25955 25958 25962 25968 25970 25999 26003 26005 26022 26023 26024 26026 26032 26195 26196 26197 26200 26201 26216 26255 26261 26263 26273 26276 26277 26281 26285 26289 26306 26369 26943 26964 26969 26973 26982 26985 26993 27026 27030 27057 27058 27074 27648 27650 31375 31379 31382 31386 31400 31401 31426 450542.85864675833786e-19 3.5010283109654867e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/130/1640?format=asciiOpticaldefaultJ/AJ/130/1640/table1RR Lyrae stars (one with two different modes)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[IGF2000]Running RR Lyrae identification number (1)meta.id;meta.mainintn_[IGF2000][q] Indicates ID identified by Vivas et al. (2004, Cat. <J/AJ/127/1158>)meta.notecharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.maino_r'ampNumber of light curve observations of IDmeta.numberintr'ampr' amplitudemagsrc.var.amplitudefloatPerPerioddtime.perioddoubleHJDHeliocentric Julian date at maximum lightdtime.epochdoubleTypeRR Lyrae typemeta.code;src.varcharr'magMean SDSS r' band magnitudemagphot.mag;em.opt.Rfloate_r'magError in r'magmagstat.error;phot.mag;em.opt.RfloatSDSSShow SDSS Datameta.ref.urlchar