J/ApJ/724/748ivo://CDS.VizieR/J/ApJ/724/748doi:10.26093/cds/vizier.17240748CDSHenry R.B.C.Kwitter K.B.Jaskot A.E.Balick B.Morrison M.A.,Milingo J.B.2017-10-18T08:25:00Z2012-08-20T07:36:53ZCDS support team

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

cds-question@unistra.frchemical-abundancesplanetary-nebulaespectrophotometrymilky-way-galaxyWe have obtained spectrophotometric observations of 41 anticenter planetary nebulae (PNe) located in the disk of the Milky Way. Electron temperatures and densities, as well as chemical abundances for He, N, O, Ne, S, Cl, and Ar were determined. Incorporating these results into our existing database of PN abundances (Henry et al., 2004AJ....127.2284H, Milingo et al., 2010, Cat. J/ApJ/711/619) yielded a sample of 124 well-observed objects with homogeneously determined abundances extending from 0.9 to 21kpc in galactocentric distance. We performed a detailed regression analysis which accounted for uncertainties in both oxygen abundances and radial distances in order to establish the metallicity gradient across the disk to be 12+log(O/H)=(9.09+/-0.05)-(0.058+/-0.006)xR_g_, with R_g_ in kpc. While we see some evidence that the gradient steepens at large galactocentric distances, more objects toward the anticenter need to be observed in order to confidently establish the true form of the metallicity gradient.2010ApJ...724..748Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/724/748CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/711/619 : {alpha}-element abundances in galactic PNe (Milingo+, 2010)J/ApJ/714/1096 : Galactic planetary nebulae (Stanghellini+, 2010)J/A+A/494/591 : Abundances in planetary nebulae (Chiappini+, 2009)J/A+A/500/1089 : Abundances in planetary nebulae (Gorny+, 2009)J/PAZh/35/574 : He, C, N and O abundances in PNe (Milanova+, 2009)J/ApJ/689/194 : Distances of galactic planetary nebulae (Stanghellini+, 2008)J/AZh/82/437 : Calculated chemical composition of galactic PN (Holovatyy+,J/A+A/423/199 : Chemical abundances of planetary nebulae (Costa+, 2004)J/MNRAS/349/793 : Galactic PNe abundances (Perinotto+, 2004)J/A+A/427/231 : Abundances in planetary nebulae (Gorny+, 2004)J/A+A/380/300 : Abundances of PN towards Galactic bulge (Escudero+, 2001)J/A+A/345/629 : Abundance gradients in planetary nebulae (Maciel+, 1999)J/AJ/115/1989 : Distances of galactic planetary nebulae (Tajitsu+, 1998)J/A+AS/126/297 : PN abundances (Ratag+ 1997)J/ApJS/98/659 : Galactic PNe statistical distance scale (Zhang 1995)J/A+A/282/436 : Abundance gradients from disk PNs (Maciel+ 1994)J/A+A/280/581 : Chemical abundances of PNe (Pasquali+, 1993)J/A+AS/94/399 : Absolute fluxes and distances of PN (Cahn+, 1992)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/724/748https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/724/748http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/724/748https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/724/748https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/724/748http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/724/748GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/724/748/pn (H{beta} fluxes of each PN (new results))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/724/748/pn?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/724/748/pn?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/724/748/pn?GETtext/xml+votable180.050000true11.394491757.95968890.005555555555555556Cone search capability for table J/ApJ/724/748/table6 (Data used in analysis (including previous data))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/724/748/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/724/748/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/724/748/table6?GETtext/xml+votable180.050000true90.58352089.65391390.0055555555555555566/1223 1244 1338 1399 1930 1967 2887 3020 3039 3152 3199 3291 3332 3353 3365 3586 3637 3672 3681 3686 3732 5996 6146 6292 9233 12222 12812 12983 12992 13968 13995 14118 14214 14282 14642 14796 14853 15172 15384 15472 15552 15621 15639 15739 20816 20826 20829 20855 20951 21215 21315 21523 21600 21609 21732 22083 22093 22137 22166 22226 23389 23576 23658 23663 23734 23816 23949 24036 24361 24368 28703 28711 28723 28780 28783 28796 28906 28917 28923 29057 29086 29092 29094 29096 29130 29213 29255 29266 29267 29427 29472 29520 29886 30221 30308 30472 30656 30684 30686 31670 31775 31847 32193 36938 37234 37324 37354 37661 37731 37959 38001 38034 38064 38075 38436 38563 39261 39775 39801 39860 39935 40070 40279 40510 40577 40621 41439 41464 41574 41674 41768 41832 42094 42147 42168 42446 42632 43296 47100 47711 47859 48951https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/724/748?format=asciiOpticaldefaultJ/ApJ/724/748/pnH{beta} fluxes of each PN (new results)SimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDSimbad column added by the CDSmeta.ref.urlcharPNPlanetary nebula identificationmeta.id;meta.maincharprimaryc[0/3.1] Extinction measure cphys.absorptionfloatHa/HbFinal converged H{alpha}/H{beta} line ratiophys.atmol.final;arith.ratio;spect.linefloatlog(FHb)[-14.82/-10.94] Log of the observed H{beta} flux in units of erg/s/cm^2^log(mW.m**-2)phot.flux;em.line.Hbeta;arith.ratiofloat_RAPositions from SIMBAD database (right ascension part)degpos.eq.ra;meta.main_DEPositions from SIMBAD database (declination part)degpos.eq.dec;meta.mainJ/ApJ/724/748/table6Data used in analysis (including previous data)SimbadNameSimbad column added by the CDSmeta.idcharRGalactocentric distance (2)kpcpos.distance;pos.galactocentricfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNSimbad column added by the CDSmeta.ref.urlcharPNPlanetary nebula identificationmeta.id;meta.maincharDHeliocentric distance (1)kpcpos.distance;pos.heliocentricfloatDSSV? Stanghellini et al. 2008, Cat. J/ApJ/689/194, heliocentric distancekpcpos.distancefloatnullableRSSV? Stanghellini et al. 2008, Cat. J/ApJ/689/194, galactocentric distancekpcpos.distance;pos.galactocentricfloatnullablelogO/HOxygen/Hydrogen abundance; 12+log(O/H)phys.abundfloatOCatCross-match(es) with other Galactic PNe catalogs within 5"meta.ref.urlintnullable_RAPositions from SIMBAD database (right ascension part)degpos.eq.ra;meta.main_DEPositions from SIMBAD database (declination part)degpos.eq.dec;meta.mainJ/ApJ/724/748/table3Ionic abundancesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPNPlanetary nebula identificationmeta.id;meta.maincharIonIon/line({AA}) identification, or "icf" = ionization correction factorphys.atmol.ionStageMetMethod used to determine temperature (1)meta.notecharf_Abd[*] Indicates Abd included in weighted meanmeta.codecharAbd? Derived ionic abundance or icfphys.abunddoublenullablee_Abd? Uncertainty in Abdstat.errordoublenullableJ/ApJ/724/748/table4Temperatures and densitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPNPlanetary nebula identificationmeta.id;meta.maincharParamParametermeta.noteValue? Parameter value (1)stat.paramdoublenullablee_Value? Uncertainty in Valuestat.error;stat.valuedoublenullablen_ValueNote on Value (2)meta.notecharJ/ApJ/724/748/table5Total elemental abundancesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPNPlanetary nebula identificationmeta.id;meta.maincharRatioThe 2 elements of the ratiometa.notecharAbd? Abundance of Ratio (1)phys.abunddoublenullablee_Abd? Uncertainty in Abd (1)stat.errordoublenullableSolarAsplund et al. (2009ARA&A..47..481A) solar abundance ratio (1)phys.abund;arith.ratiodoubleOrionEsteban et al. (2004MNRAS.355..229E) Orion abundance ratio (1)phys.abunddoubleJ/ApJ/724/748/table2Fluxes and intensitiesRFlux? Raw, uncorrected line flux (H{beta}=100) (2)spect.line.intensity;arith.ratiodoublenullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPNPlanetary nebula identificationmeta.id;meta.maincharLineIDLine identification (1)meta.id;spect.linef(lam)Reddening functionphot.color.excessfloatf_RFluxUncertainty flag on RFlux (3)meta.codecharDFlux? Dereddened line flux (2)spect.line.intensity;arith.ratiodoublenullablee_DFlux? Uncertainty in DFlux (2)stat.errordoublenullableu_DFluxUncertainty flag on DFlux (3)meta.code.errorchar