J/A+A/561/A8ivo://CDS.VizieR/J/A+A/561/A8doi:10.26093/cds/vizier.35610008CDSHajduk M.Gladkowski M.Soszynski I.2017-11-06T12:24:17Z2013-12-17T11:33:08ZCDS support team

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

cds-question@unistra.frmagellanic-cloudsplanetary-nebulaebe-starsemission-line-starsx-ray-sourcesyoung-stellar-objectsspectroscopyThe Optical Gravitational Lensing Experiment (OGLE), originally designed to search for microlensing events, provides a rich and uniform data set suitable for studying the variability of certain types of objects. We used the OGLE data to study the photometry of central stars of planetary nebulae (PNe) in the Small Magellanic Cloud (SMC). In particular, we searched for close binary central stars with the aim to constrain the binary fraction and period distribution in the SMC. We also searched for PNe mimics and removed them from the PNe sample. We identified 52 counterparts of PNe in the SMC in the I-band images from the OGLE-II and OGLE-III surveys. We analysed the time-series photometry of the PNe. Spectra of the photometric variables were obtained to constrain the nature of the objects or search for additional evidence for binarity. Eight variables were found. Of these, seven objects are PNe mimics, including one symbiotic star candidate. One close binary central star of PN with a period of 1.15 or 2.31 day was discovered. The obtained binary fraction for the SMC PNe and the observational biases are discussed in terms of the OGLE observations.2014A&A...561A...8Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/561/A8CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+AS/102/451 : Emission-line stars and PNe in the SMC (Meyssonnier+ 1993)J/ApJS/75/407 : LMC + SMC PNe optical spectroscopy. I (Meatheringham+ 1991)J/ApJS/76/1085 : LMC + SMC PNe optical spectroscopy. II (Meatheringham+ 1991)J/ApJS/83/87 : LMC + SMC PNe optical spectroscopy. III (Vassiliadis+ 1992)J/AcA/51/317 : OGLE DIA. Catalog of LMC and SMC images (Zebrun+, 2001)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/561/A8https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/561/A8http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/561/A8https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/561/A8https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/561/A8http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/561/A8GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/561/A8/table1 (List of PNe identified in the OGLE-II and OGLE-III fields in the SMC)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/561/A8/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/561/A8/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/561/A8/table1?GETtext/xml+votable180.050000true8.591625-73.22261110.005555555555555556Cone search capability for table J/A+A/561/A8/objects (Information on each object (table 2))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/561/A8/objects?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/561/A8/objects?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/561/A8/objects?GETtext/xml+votable180.050000true10.2880417-73.11308330.0055555555555555565/8323 6/33297 33299 33304 33316-33317 33328-333292.367228618189496e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/561/A8?format=asciiX-rayOpticaldefaultJ/A+A/561/A8/table4Spectra of 8 objects showing photometric variability: flux datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of the objectmeta.id;meta.maincharlambda[349/750] Spectral wavelengthnmem.wlfloatF(lambda)Flux values (erg/cm^2^/{AA})cW.m**-2.nm**-1phot.fluxdoubleJ/A+A/561/A8/table1List of PNe identified in the OGLE-II and OGLE-III fields in the SMCrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameNamemeta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainVmag? V magnitudemagphot.mag;em.opt.VfloatnullableImag? I magnitudemagphot.mag;em.opt.IfloatnullableNINumber of the OGLE-II (when available) and OGLE-III observationsmeta.idcharr_NIReference for NI (1)meta.ref;pos.frameintDim1? Diameter or major axisarcsecphys.angSizefloatnullableDim2? Minor axisarcsecphys.angSizefloatnullabler_Dim1? Reference for dimensions (1)meta.ref;pos.frameintnullableONameOther namesmeta.idcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/A+A/561/A8/objectsInformation on each object (table 2)spShow the spectrummeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of the object (1)meta.id;meta.maincharprimaryRAJ2000Right Ascension J2000pos.eq.ra;meta.mainDEJ2000Declination J2000pos.eq.dec;meta.mainImagI band OGLE-III mean magnitudemagphot.mag;em.opt.IfloatVmagV band OGLE-III mean magnitudemagphot.mag;em.opt.VfloatONamesOther names (1)meta.idcharSimbadSimbad column added by the CDSmeta.ref.urlchar