J/A+A/472/101ivo://CDS.VizieR/J/A+A/472/101doi:10.26093/cds/vizier.34720101CDSIdiart T.P.Maciel W.J.Costa R.D.D.2017-12-07T07:27:20Z2007-11-15T08:24:12ZCDS support team

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

cds-question@unistra.frmagellanic-cloudsplanetary-nebulaespectroscopyWe investigate the chemical evolution of the Small Magellanic Cloud (SMC) based on abundance data of planetary nebulae (PNe). The main goal is to investigate the time evolution of the oxygen abundance in this galaxy by deriving an age-metallicity relation. Such a relation is of fundamental importance as an observational constraint for chemical evolution models of the SMC. We have used high quality PNe data to derive the properties of the progenitor stars, so that the stellar ages could be estimated. We collected a large number of measured spectral fluxes for each nebula and derived accurate physical parameters and nebular abundances. New spectral data for a sample of SMC PNe obtained between 1999 and 2002 are also presented. These data are used with data available in the literature to improve the accuracy of the fluxes for each spectral line.2007A&A...472..101Ihttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/472/101CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/472/101https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/472/101http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/472/101https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/472/101https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/472/101http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/472/101GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/472/101/table7 (Ionic abundances and uncertainties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/472/101/table7?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/472/101/table7?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/472/101/table7?GETtext/xml+votable180.050000true5.8866667-74.87527780.0055555555555555565/8323 6/33286 33289 33291 33297 33299-33300 33304 33306 33313 33315-33317 33319 33321 33324 33328-33329 33336https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/472/101?format=asciiOpticaldefaultJ/A+A/472/101/table7Ionic abundances and uncertaintiesu_A7135Uncertainty flag on A7135 (2)meta.code.errorcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameNebula namemeta.id;meta.maincharprimaryA3727? Ionic abundances OII 3727phys.abunddoublenullableu_A3727Uncertainty flag on A3727 (2)meta.code.errorchare_A3727? Uncertainty in the ionic abundances OII 3727stat.errordoublenullablen_A3727[*] Origin of dispersion (1)meta.notecharA3869? Ionic abundances NeIII 3869/3968phys.abunddoublenullableu_A3869Uncertainty flag on A3869 (2)meta.code.errorchare_A3869? Uncertainty in the ionic abundances NeIII 3869/3968stat.errordoublenullablen_A3869[*] Origin of dispersion (1)meta.notecharA4959? Ionic abundances OIII 4959/5007phys.abunddoublenullableu_A4959Uncertainty flag on A4959 (2)meta.code.errorchare_A4959? Uncertainty in the ionic abundances OIII 4959/5007stat.errordoublenullableA6312? Ionic abundances SIII 6312phys.abunddoublenullableu_A6312Uncertainty flag on A6312 (2)meta.code.errorchare_A6312? Uncertainty in the ionic abundances SIII 6312stat.errordoublenullablen_A6312[*] Origin of dispersion (1)meta.notecharA6584? Ionic abundances NII 6584phys.abunddoublenullableu_A6584Uncertainty flag on A6584 (2)meta.code.errorchare_A6584? Uncertainty in the ionic abundances NII 6584stat.errordoublenullablen_A6584[*] Origin of dispersion (1)meta.notecharA6717? Ionic abundances SII 6717/6731phys.abunddoublenullableu_A6717Uncertainty flag on A6717 (2)meta.code.errorchare_A6717? Uncertainty in the ionic abundances SII 6717/6731stat.errordoublenullablen_A6717[*] Origin of dispersion (1)meta.notecharA7135? Ionic abundances ArIII 7135phys.abunddoublenullablee_A7135? Uncertainty in the ionic abundances ArIII 7135stat.errordoublenullablen_A7135[*] Origin of dispersion (1)meta.notecharA7320? Ionic abundances OII 7320/7330phys.abunddoublenullableu_A7320Uncertainty flag on A7320 (2)meta.code.errorchare_A7320? Uncertainty in the ionic abundances OII 7320/7330stat.errordoublenullablen_A7320[*] Origin of dispersion (1)meta.notecharSimbadNameSimbad column added by the CDSmeta.idcharFluxesDisplay the fluxes (from tables 2 and 3)meta.ref.urlchar_RAComputed Right Ascension for Equinox: J2000degpos.eq.ra;meta.main_DEComputed Declination for Equinox: J2000degpos.eq.dec;meta.mainJ/A+A/472/101/table2New measured fluxes with errors (relative to Hbeta)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameNebula namemeta.id;meta.maincharIon/lineIon/Line wavelength (Angstroms)phys.atmol.ionStagecharFlux? Measured flux (relative to Hbeta)spect.line.intensity;arith.ratiofloatnullablee_Flux? Uncertainty of the fluxstat.error;phot.fluxfloatnullableo_Flux? Number of measurementsmeta.numberintnullableJ/A+A/472/101/table3Average fluxes with errors (relative to Hbeta)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameNebula namemeta.id;meta.maincharIon/lineIon/Line wavelength (Angstroms)phys.atmol.ionStagecharFlux? Average flux (relative to Hbeta)spect.line.intensity;arith.ratiofloatnullablee_Flux? Uncertainty of the fluxstat.error;phot.fluxfloatnullableo_Flux? Number of measurementsmeta.numberintnullable