J/AJ/133/665ivo://CDS.VizieR/J/AJ/133/665doi:10.26093/cds/vizier.51330665CDSSchmidt E.G.Langan S.Rogalla D.Thacker-Lynn L.2017-06-01T08:52:02Z2009-02-22T21:22:44ZCDS support team

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

cds-question@unistra.frvariable-starsphotometryWe have obtained VR photometry of 205 Cepheid variable star candidates that were discovered in a small section of the Northern Sky Variability Survey. Given their locations and apparent magnitudes, any stars in this sample that are Cepheids are very likely to be type II Cepheids. On the basis of the regularity of variation, revised periods, light-curve morphology, slope of the color-magnitude relation, and color, we have identified 97 probable Cepheids and 17 possible Cepheids. While some of the photometric properties, particularly the colors, are consistent with the identification of these stars as Cepheids, the amplitudes are small compared to known type II Cepheids and the period distribution does not match that of known type II Cepheids.2007AJ....133..665Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/133/665CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/250 : Combined General Catalogue of Variable Stars (Samus+ 2004)J/AJ/119/1901 : ROTSE all-sky surveys for variable stars (Akerlof+, 2000)ftp://skydot.lanl.gov/pub/projects/skydot/nsvs/ : NSVS databasehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/133/665https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/133/665http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/133/665https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/133/665https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/133/665http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/133/665GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/133/665/stars (Program stars and light curve parameters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/133/665/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/133/665/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/133/665/stars?GETtext/xml+votable180.050000true287.054583338.49966670.0055555555555555566/8571 8664 8693 8938 8950 8951 8952 8988 8989 8993 9014 9076 9083 9096 9124 9186 9194 9236 9238 9266 9289 9300 9301 9365 9381 9392 9396 9431 9447 9451 9461 9466 9480 9492 9494 9495 9497 9505 9512 9541 9545 9562 9569 9571 9580 9586 9590 9605 9622 9661 9669 9672 9676 9709 9712 9715 9763 9765 9780 9794 10038 10039 10047 10055 10060 10062 10074 10081 10307 10345 10356 10379 10382 10401 10439 10464 10476 10497 10501 10528 10534 10624 10792 10803 10816 14504 14588 14767 14884 14892 14895 14905 14909 14917 14918 14921 14927 14932 14938 14941 14949 14958 14969 14979 14984 14995 14997 15000 15002 15004 15010 15027 15037 15040 15043 15046 15050 15070 15108 15115 15116 15120 15127 15130 15152 15156 15157 15170 15178 15232 15267 15272 28541 31229 31581 31585 31586 31589 31590 31591 31598 31600 31605 31607 31613 31910 31915 32191 32233 32242 32251 32269 32270 32283 32295 32300 32353 32354 32375 32387 32390 32423 32427 32441 32447 32460 32462 32471 32485 32508 32531 32548 32553 32566 32567 32584 32631 32638 32642 32643 32657 32671 32681 32683 32695 32697 32699 32703 32707 32713 32720 32722 32733 32734 32736 32752https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/133/665?format=asciiOpticaldefaultJ/AJ/133/665/starsProgram stars and light curve parametersLCDraw the light curvemeta.ref.urlcharGCVSName from GCVSmeta.idcharn_StRejection status (6)meta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqRunning Object Number, RNNNmeta.id;meta.maincharn_Seq[*] indicates a note in notes.dat filemeta.notecharPer? Period From Present Study (2)dtime.perioddoublenullablef_Per[c] no period found (3)meta.codechare_Per? Uncertainty in Period0.01dstat.errorintnullable<Vmag>Mean V magnitudemagphot.mag;em.opt.Vfloatf_<Vmag>[c] Arithmetic mean (4)meta.codechare_<Vmag>? Uncertainty in <Vmag>magstat.error;phot.mag;em.opt.Vfloatnullable<V-R>Mean V-R color indexmagphot.color;em.opt.V;em.opt.Rfloatf_<V-R>[c] Arithmetic mean (4)meta.codechare_<V-R>? Uncertainty in <V-R>magstat.error;phot.color;em.opt.VfloatnullableVampThe V Amplitudemagphot.mag;em.opt.Vfloatf_Vamp[c] Vamp is a range (5)meta.codecharSlope? Slope of V/V-R Relationarith.grad;phot.color;em.opt.Vfloatnullablee_Slope? Uncertainty in Slopestat.errorfloatnullableSt[AB ] Status of Star as Cepheid Candidate (7)meta.codecharRotse1Star Name (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharPerAPeriod from Akerlof et al. (2000, Cat. J/AJ/119/1901)dtime.perioddoublemagMean unfiltered ROTSE magnitude from Akerlof et al. (2000, Cat. J/AJ/119/1901)magphot.mag;em.optfloatAmp? Amplitude from Akerlof et al. (2000, Cat. J/AJ/119/1901)magphot.magfloatnullableNBNumber of Observations from Behlen Observatorymeta.numberintNSVNumber of Observations from the NSVSmeta.numberint_RAPosition from ROTSE1 name (right ascension part)degpos.eq.ra;meta.main_DEPosition from ROTSE1 name (declination part)degpos.eq.dec;meta.mainJ/AJ/133/665/notesIndividual notesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqRunning object number, RNNNmeta.id;meta.maincharNoteText of the notemeta.notechar