J/ApJ/696/729ivo://CDS.VizieR/J/ApJ/696/729doi:10.26093/cds/vizier.16960729CDSMagrini L.Stanghellini L.Villaver E.2017-06-27T06:37:59Z2011-05-17T09:17:49ZCDS support team

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

cds-question@unistra.frplanetary-nebulaeextinctionchemical-abundancesspectroscopyThe planetary nebula (PN) population of M33 is studied via multifiber spectroscopy with Hectospec at the MMT. In this paper, we present the spectra of 102 PNe, whereas plasma diagnostic and chemical abundances were performed on the 93 PNe where the necessary diagnostic lines were measured. About 20% of the PNe are compatible with being Type I; the rest of the sample is the progeny of an old disk stellar population, with main sequence masses M<3M_{sun}_ and ages t>0.3Gyr. Our observations do not seem to imply that the metallicity gradient across the M33 disk has flattened considerably with time. We report also the discovery of a PN with Wolf-Rayet features, PN039, belonging the class of late [WC] stars.2009ApJ...696..729Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/696/729CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/675/1213 : Abundances in M33 HII regions (Rosolowsky+, 2008)J/ApJ/614/167 : Planetary nebulae in M33 (Ciardullo+, 2004)J/ApJ/577/31 : PNe in six galaxies (Ciardullo+, 2002)J/A+A/367/498 : Candidate Planetary Nebulae in M 33 (Magrini+, 2001)J/A+AS/126/297 : PN abundances (Ratag+ 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/696/729https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/696/729http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/696/729https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/696/729https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/696/729http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/696/729GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/696/729/pne (PNe observed: plasma diagnostics and abundances)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/696/729/pne?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/696/729/pne?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/696/729/pne?GETtext/xml+votable180.050000true23.037666730.368250.0055555555555555566/2154 2155 2241https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/696/729?format=asciiOpticaldefaultJ/ApJ/696/729/pnePNe observed: plasma diagnostics and abundancesAr/H? Ar/H abundancephys.abund.XdoublenullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintflSimbad column added by the CDSmeta.ref.urlcharSeqIdentification number (G1)meta.idintprimaryRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainOIIImag? The [OIII] magnitude from Ciardullo, 2004, Cat. J/ApJ/614/167 (1)magphot.mag;em.line.OIIIfloatnullableC04details from Ciardullo et al. 2004, Cat. J/ApJ/614/167meta.ref.urlcharArIII/H? ArIII/H abundancephys.abund.XdoublenullableHe/H? He/H abundancephys.abund.XfloatnullableHeI/H? HeI/H abundancephys.abund.XfloatnullableHeII/H? HeII/H abundancephys.abund.XfloatnullableICF(Ar)? Ar ionization correction factorarith.factorfloatnullableICF(N)? N ionization correction factorarith.factorfloatnullableICF(Ne)? Ne ionization correction factorarith.factorfloatnullableICF(O)? O ionization correction factorarith.factorfloatnullableICF(S)? S ionization correction factorarith.factorfloatnullableN/H? N/H abundancephys.abund.XdoublenullableNII/H? NII/H abundancephys.abund.XdoublenullableNe/H? Ne/H abundancephys.abund.XdoublenullableNeIII/H? NeIII/H abundancephys.abund.XdoublenullableO/H? O/H abundancephys.abund.XdoublenullableOI/H? OI/H abundancephys.abund.XdoublenullableOII/H? OII/H abundancephys.abund.XdoublenullableOIII/H? OIII/H abundancephys.abund.XdoublenullableS/H? S/H abundancephys.abund.XdoublenullableSII/H? SII/H abundancephys.abund.XdoublenullableSIII/H? SIII/H abundancephys.abund.XdoublenullableTe(NII)(a)? [NII] electron temperature computed from diagnostic lineKphys.temperature;phys.electronintnullableTe(NII)(b)? Electron temperature for [NII] (1)Kphys.temperature;phys.electronintnullableTe(OIII)(a)? [OIII] electron temperature computed from diagnostic lineKphys.temperature;phys.electronfloatnullableTe(OIII)(b)? Electron temperature for [OIII] (1)Kphys.temperature;phys.electronfloatnullableNe(SII)? Electron density from [SII]cm**-3phys.density;phys.electronfloatnullableSimbadNameSimbad column added by the CDSmeta.idcharJ/ApJ/696/729/table2Observed and de-reddened fluxesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqIdentificaiton number (G1)meta.idintcHb? Nebular extinction coefficientphys.absorptionfloatnullablee_cHb? Error in cHbstat.errorfloatnullableIonIon identificationmeta.id;phys.atmol.ionStagecharlambdaWavelength in Angstroms0.1nmem.wlintFlambda? Measured line flux (1)phot.fluxfloatnullablee_Flambda? Absolute error in Flambdastat.errorfloatnullableIlambda? Extinction corrected line flux (1)spect.line.intensity;arith.ratiofloatnullable