J/A+A/404/621ivo://CDS.VizieR/J/A+A/404/621doi:10.26093/cds/vizier.34040621CDSJin H.Kim S.-L.Kwon S.-G.Youn J.H.Lee C.-U.Lee D.-J.Kim K.-S.2017-06-27T06:38:19Z2010-02-12T12:46:54ZCDS support team

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

cds-question@unistra.frvariable-starsccd-photometryWe present multi-passband CCD photometry of 20 ROTSE-I {delta} Scuti type pulsating stars and 1 RR Lyrae star to re-classify their variable types using the comparison of amplitudes between V and I passbands. For the re-classification, we used a criterion that pulsating stars have larger amplitude differences between passbands than eclipsing binaries because brightness changes of pulsating stars are mainly due to the temperature variations. As a result, only six stars were re-confirmed as {delta} Scuti variables and thirteen stars turned out to be W UMa type eclipsing binaries. The other two stars were identified as one cataclysmic variable and one non-variable, respectively. Our results suggest that a number of ROTSE-I {delta} Scuti type stars, which do not show typical pulsating light curves of high amplitude {delta} Scuti stars, are W UMa type eclipsing binaries.2003A&A...404..621Jhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/404/621CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/119/1901 : ROTSE all-sky surveys for variable stars (Akerlof+, 2000)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/404/621https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/404/621http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/404/621https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/404/621https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/404/621http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/404/621GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/404/621/list (*ROTSE parameters of the stars studied)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/404/621/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/404/621/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/404/621/list?GETtext/xml+votable180.050000true192.9167237.262840.0055555555555555566/8937 9319 9449 9511 9714 9857 10351 10782 14994 15056 15090 15120 15141 15157 15187 31686 32511 32541 32583 32620https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/404/621?format=asciiOpticaldefaultJ/A+A/404/621/list*ROTSE parameters of the stars studiedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintROTSERSV1 ROTSE1 namemeta.id;meta.maincharRAJ2000Right ascension in decimal degrees (J2000) (4)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000) (4)degpos.eq.dec;meta.mainPerPerioddtime.perioddoublee_Perrms uncertainty on Perdstat.errordoublemagMean ROTSE magnitudemagphot.mag;em.optfloatAmpAmplitudemagphot.magfloatClRROTSE Classification: ds={delta} Sct variable, rrab=RR Lyr (class ab) starmeta.notecharVtypeOur variable classification (3)meta.code.class;src.class.colorcharQualQuality flag of the light curve (2)meta.code.qualinttable3Name of the table containing the light curvesmeta.id;meta.datasetcharVNameName of variable (3)meta.idcharSimbadSimbad column added by the CDSmeta.refchar