J/A+A/496/813ivo://CDS.VizieR/J/A+A/496/813doi:10.26093/cds/vizier.34960813CDSMiszalski B.Acker A.Moffat A.F.JParker Q.A.Udalski A.2017-09-19T14:23:43Z2009-05-30T17:12:34ZCDS support team

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

cds-question@unistra.frplanetary-nebulaeeclipsing-binary-starsBinarity has been hypothesised to play an important, if not ubiquitous, role in the formation of planetary nebulae (PNe). Yet there remains a severe paucity of known binary central stars required to test the binary hypothesis and to place strong constraints on the physics of the common-envelope (CE) phase of binary stellar evolution. Large photometric surveys offer an unrivalled opportunity to efficiently discover many binary central stars. We have combined photometry from the OGLE microlensing survey with the largest sample of PNe towards the Galactic bulge to systematically search for new binaries. A total of 21 periodic binaries were found thereby more than doubling the known sample. The orbital period distribution was found to be best described by CE population synthesis models when no correlation between primary and secondary masses is assumed for the initial mass ratio distribution. A comparison with post-CE white dwarf binaries indicates both distributions are representative of the true post-CE period distribution with most binaries exhibiting periods less than one day. An estimated close binary fraction of 12-21% is derived and is the first robust and independent validation of the prevailing 10-15% fraction estimated by Bond (2000, in Asymmetrical Planetary Nebulae II: From Origins to Microstructures, 199, 115). This suggests that binarity is not a precondition for the formation of PNe and that close binaries do not play a dominant role in the shaping of nebular morphologies. Systematic effects and biases of the survey are discussed with implications for future photometric surveys.2009A&A...496..813Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/496/813CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/84 : Strasbourg-ESO Catalogue of Galactic Planetary Nebulae (Acker+, 1992)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/496/813https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/496/813http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/496/813https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/496/813https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/496/813http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/496/813GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/496/813/tablea1 (Coordinates and central star ID remarks)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/496/813/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/496/813/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/496/813/tablea1?GETtext/xml+votable180.050000true256.377917-32.5355560.0055555555555555565/7179-7180 7182-7183 7194 7205 7216-7217 6/28699 28702 28705-28707 28710-28711 28713 28725-28727 28769-28771 28782-28783 28792 28817 28819 28828 28843 28857 28873 28876 28880-28882 28886 28905-28907 28910-28911 28922 29184-29185 29202-29203 29252 29254 29257 29261 29272 42351 42490https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/496/813?format=asciiOpticaldefaultJ/A+A/496/813/tablea1Coordinates and central star ID remarksrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldOGLE-III field (BLGNNN)meta.id;obs.fieldcharField2? Second OGLE-III field number (NNN)meta.id;obs.fieldintnullablePNGPN G designation (lll.l+bb.b)meta.id;meta.maincharNameCommon name of the planetary nebulameta.idcharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainRemCentral star (CSPN) ID remarks (1)meta.notecharSimbadSimbad column added by the CDSchar