J/AJ/128/1748ivo://CDS.VizieR/J/AJ/128/1748doi:10.26093/cds/vizier.51281748CDSSchmidt E.G.Johnston D.Langan S.Lee K.M.2018-01-04T08:21:53Z2005-06-19T15:34:34ZCDS support team

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

cds-question@unistra.frpopulation-ii-starsvariable-starsphotometryWe present 1256 new photometric observations of 36 Cepheids with periods longer than 8 days. The majority are likely type II Cepheids, but we have included about a dozen classical Cepheids for comparison purposes, a few stars of uncertain type, and one putative RV Tauri star. We discuss the appearance of the light curves, the Fourier parameters, and the light-curve stability in terms of differentiation between type I and type II Cepheids. Although we encounter the same difficulties as previous investigators in using these parameters for this purpose, we are able to identify some stars of particular interest, including several likely type I Cepheids at large distances from the Galactic plane. Six stars with especially large period changes are identified and discussed.2004AJ....128.1748Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/128/1748CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/217 : Photoelectric observations of Cepheids in UBV(RI)cJ/AJ/112/2769 : Behlen Observatory Survey. IV. (Schmidt+ 1996)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/128/1748https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/128/1748http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/128/1748https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/128/1748https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/128/1748http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/128/1748GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/128/1748/table1 (The program stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/128/1748/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/128/1748/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/128/1748/table1?GETtext/xml+votable180.050000true283.983333-2.8816670.0055555555555555566/1432 1829 2799 3131 3285 9812 13814 13955 14328 14384 14388 14411 14427 14457 14462 14480 14690 15461 15585 15618 15698 22114 29145 30225 30239 30588 30646 31744 31799 31866 31883 32052 32064 32607 44786 48880https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/128/1748?format=asciiOpticaldefaultJ/AJ/128/1748/table1The program starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameNamecharprimaryf_NameFlag on Name (1)charPer? PerioddfloatnullableClassGCVS class (Cat. <II/250>)charClass2[II] Cepheid Harris class (1985AJ.....90..756H)charNcompNumber of comparison stars used for each fieldintsigVmag? Standard errors of the adopted V magnitude of the comparison starsmagfloatnullablesigRmag? Standard errors of the adopted R magnitude of the comparison starsmagfloatnullableNnights? Number of photometric nights included in calculating the comparison star magnitudesintnullableNoteNote (2)charDate1Julian date of start of observationdintDate2Julian date of end of observationdintNtot? Total number of light-curve points usedintnullableNnewNew points in the light-curveintRef? References to the sources of the photometry (3)charPlotPlot of the light-curve (with data of table2)charSimbadSimbad column added by the CDSchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/AJ/128/1748/table2Photometric dataNameObject namecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian DateddoubleVmagThe V-band magnitudemagfloatRmagThe R-band magnitudemagfloatV-RThe (V-R) colormagfloat