J/A+A/282/436ivo://CDS.VizieR/J/A+A/282/436doi:10.26093/cds/vizier.32820436CDSMaciel W.J.Koeppen J.2018-01-10T11:48:29Z2001-07-30T13:04:20ZCDS support team

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

cds-question@unistra.frplanetary-nebulaechemical-abundancesA new determination of the radial abundance gradients of O/H, Ne/H, S/H, and Ar/H is made for disk planetary nebulae, (PN), that is, those objects of Peimbert types I, II, and III. On the basis of a sample containing 200 nebulae, it can be concluded that these gradients are generally similar, and of the same order of magnitude as the O/H gradient displayed by galactic HII regions. Some distance-independent correlations confirm the accuracy of the abundances and support the interpretation of the gradients in terms of chemical evolution models. The time evolution of the abundance gradients in the Milky Way is investigated, and their variation with the types of PN are compared with predictions of chemical evolution models.1994A&A...282..436Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/282/436CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/423/199 : Chemical abundances of planetary nebulae (Costa+, 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/282/436https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/282/436http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/282/436https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/282/436https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/282/436http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/282/436GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/282/436/table1 (Basic data for planetary nebulae)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/282/436/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/282/436/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/282/436/table1?GETtext/xml+votable180.050000true3.25422972.5219680.0055555555555555566/1200 1244 1399 1552 1562 2883 2887 2979 2993 3152 3332 3637 3819 5996 6146 6292 6857 9233 11605 12222 12812 12852 12857 12907 12983 12992 13676 13968 13995 14005 14076 14118 14214 14279 14282 14429 14443 14592 14642 14796 14827 14853 15145 15172 15384 15435 15472 15552 15639 15739 16886 20829 21215 21315 21523 21600 21732 22093 22226 22478 22660 23389 23704 23949 24361 25008 28703 28711 28718 28723 28756 28772 28779-28780 28782-28783 28796 28825 28837-28838 28865 28870-28871 28892 28906 28917 28923 28963 28975 29057 29086 29092 29094 29096 29130 29182 29193 29213 29254-29255 29266-29267 29317 29427 29472 29520 29718 29852 29866 29886 30221 30288 30308 30472 30491 30511 30527 30615 30656 30684 30686 30803 31318 31670 31775 31847 32193 32571 36130 36938 37110 37234 37316 37324 37354 37661 37710 37731 37959 38001 38034 38064 38075 38436 38512 38563 39029 39194 39261 39279 39775 39801 39822 39860 39956 40070 40279 40571 40577 40621 41174 41371 41439 41448 41464 41470 41574 41580 41646 41664 41674 41732 41768 41789 41831-41832 41886 41903 42094 42147 42151 42157 42160 42168 42312 42446 42494 42632 42753 42835 43296 43360 44048 44416 47100 47711 47859 48951https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/282/436?format=asciiOpticaldefaultJ/A+A/282/436/table1Basic data for planetary nebulaeTypePeimbert typesrc.classchar_RAPosition (from SIMBAD) (right ascension part)degpos.eq.ra;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of the planetary nebulameta.id;meta.maincharprimaryPKPerek-Kohoutek designationmeta.idcharSimbadSimbad column added by the CDSmeta.refchardHeliocentric distancekpcpos.distancefloatr_dreferences to distance (see file refs.dat)meta.refcharRProjected distance to the Galactic Centerkpcpos.distancefloat_DEPosition (from SIMBAD) (declination part)degpos.eq.dec;meta.mainJ/A+A/282/436/table2Abundance of disk planetary nebulaeO/H? Oxygen abundances with respect to Hphot.flux;arith.ratiofloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of the planetary nebulameta.id;meta.maincharr_O/H? references to O/H (see refs.dat)meta.refcharNe/H? Neon abundances with respect to Hphot.flux;arith.ratiofloatnullabler_Ne/H? references to Ne/H (see refs.dat)meta.refcharS/H? Sulfur abundances with respect to Hphot.flux;arith.ratiofloatnullabler_S/H? references to S/H (see refs.dat)meta.refcharAr/H? Argon abundances with respect to Hphot.flux;arith.ratiofloatnullabler_Ar/H? references to Ar/H (see refs.dat)meta.refcharJ/A+A/282/436/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference code used in the tablesmeta.refcharBibcodeThe 19-digit bibcodemeta.bib.bibcodecharTextAuthorsmeta.bibchar