J/AJ/146/139ivo://CDS.VizieR/J/AJ/146/139doi:10.26093/cds/vizier.51460139CDSWang L.Macri L.M.Wang L.Ashley M.C.B.Cui X.Feng L.-L.Gong X.,Lawrence J.S.Liu Q.Luong-Van D.Pennypacker C.R.Shang Z.,Storey J.W.V.Yang H.Yang J.Yuan X.York D.G.Zhou X.Zhu Z.Zhu Z.2017-10-11T05:13:09Z2015-05-18T06:44:20ZCDS support team

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

cds-question@unistra.frvariable-starsvisible-astronomysloan-photometryWe present results from a season of observations with the Chinese Small Telescope ARray, obtained over 183 days of the 2010 Antarctic winter. We carried out high-cadence time-series aperture photometry of 9125 stars with i{<~}15.3mag located in a 23deg^2^ region centered on the south celestial pole. We identified 188 variable stars, including 67 new objects relative to our 2008 observations, thanks to broader synoptic coverage, a deeper magnitude limit, and a larger field of view. We used the photometric data set to derive site statistics from Dome A. Based on two years of observations, we find that extinction due to clouds at this site is less than 0.1 and 0.4mag during 45% and 75% of the dark time, respectively.2013AJ....146..139Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/146/139CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/gcvs : General Catalogue of Variable Stars (Samus+ 2007-2013)I/305 : The Guide Star Catalog, Version 2.3.2 (GSC2.3) (STScI, 2006)J/AJ/142/155 : Variable stars photometry from Dome A (Wang+, 2011)J/PASP/122/347 : Chinese Small Telescope ARray (CSTAR) (Zhou+, 2010)J/AcA/50/177 : All Sky Automated Survey Catalog (Pojmanski+, 2000)http://casdc.china-vo.org/data/cstar : Chinese Virtual Observatoryhttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/146/139https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/146/139http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/146/139https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/146/139https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/146/139http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/146/139GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/146/139/table3 (Variable stars observed with CSTAR in 2010)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/146/139/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/146/139/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/146/139/table3?GETtext/xml+votable180.050000true181.203125-87.3850.0055555555555555565/8192 9216 10240 11264 6/32772 32776 32778 36868 36869 36870 36872 40964 40966 40968 40970 45060 45061 45062 45064https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/146/139?format=asciiOpticaldefaultJ/AJ/146/139/table3Variable stars observed with CSTAR in 2010dimagThe 90% magnitude range of i band light curvemagphot.mag;arith.difffloatJWelch-Stetson variability index J (4)src.var.indexfloatPer? Main period if applicabledtime.period;meta.maindoublenullabler_PerMethod of period determination (LS or BLS) (5)meta.ref;pos.framecharT0? Epoch of primary eclipse or minimum light (JD-2454500), when applicabledtime.epochdoublenullableTypeTentative classification of variable type (6)meta.code;src.varcharRefAdditional reference (7)meta.ref;pos.framecharSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCSTAR identification from 2010 observations (1)meta.id;meta.maincharName2? CSTAR identification (2008 observations) (2)meta.idintnullableGSC2.3Identification from Guide Star Catalog (3)meta.idcharRAJ2000Hour of Right Ascension from GSC2.3 (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination from GSC2.3 (J2000)pos.eq.dec;meta.main<imag>Mean i band magnitudemagphot.mag;em.opt.Ifloat