J/ApJ/1004/220ivo://CDS.VizieR/J/ApJ/1004/220CDSCavichia O.Monteiro H.Cervino M.da Cunha-Silva A.R.Maciel W.J.,Cardoso A.F.S.2026-06-17T14:04:30Z2026-06-17T15:02:54ZCDS support team

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

cds-question@unistra.frmilky-way-galaxyplanetary-nebulaechemical-abundancesvisible-astronomyThe spatial distribution of chemical elements in the Galactic disk provides key constraints on models of galaxy evolution. However, studies using planetary nebulae (PNe) as tracers have been historically limited by large uncertainties in their distances. To overcome the long-standing distance uncertainties, we recalibrated the H{alpha} surface brightness-radius relation from Frew et al. (2013MNRAS.431....2F, Cat. J/MNRAS/431/2) with Gaia DR3 parallaxes, deriving distances for 1130 PNe of which 415 have Bayesian distances based on Gaia DR3 parallaxes. The O/H radial gradient for 231 disk PNe is fitted considering three models: a single linear gradient and segmented linear fits with one or two breaks. The segmented fits indicate a change in slope near the solar radius (R~8kpc), with a flatter or slightly positive gradient inward and a steeper negative gradient outward. This feature may reflect changes in star formation efficiency driven by the Galactic bar or the corotation resonance of the spiral arms. The breaks in the metallicity radial gradients observed in this work may result from the superposition of distinct stellar populations associated with the thin and thick disks. The two-dimensional O/H distribution in the Galactic plane supports the adopted distances and reveals modest azimuthal asymmetry, with enhanced abundances near the bar at positive longitudes, and a bimodal abundance structure between the inner and outer solar regions. Our results provide new constraints on the chemical evolution of the Milky Way, the impact of non-axisymmetric structures, and the possible existence of distinct radial abundance regimes across the Galactic disk.2026ApJ..1004..220Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/1004/220CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/1004/220https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/1004/220http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/1004/220https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/1004/220https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/1004/220http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/1004/220GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/1004/220/table1 (Gaia DR3 sources identified as CSPNe)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/1004/220/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/1004/220/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/1004/220/table1?GETtext/xml+votable180.050000true273.325-32.3290.005555555555555556Cone search capability for table J/ApJ/1004/220/table3 (Catalogue of distances)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/1004/220/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/1004/220/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/1004/220/table3?GETtext/xml+votable180.050000true273.3248333-32.32858330.0055555555555555565/7179-7180 7182 7194 7198 7205 7209 7211 7216-7217 7226 6/361 1051 1111 1200 1223 1302 1338 1399 1455-1456 1552 1562 1718 1778 1805 1920 1930 2395 2522 2883 2887 2911 2979 2993 2997 3008 3020 3059 3089 3128 3152 3199 3291 3308 3316 3324-3325 3332 3353 3365 3586 3618 3621 3637 3643 3659 3672 3681 3683 3686 3732 3739 3756 3768 3771 3819 4244 4370 4690 5037 5591 5996 6015 6146 6292 6654 6857 7090 7134 7392 8719 9233 9276 9461 9806 10049 10378 11176 11339 11605 12222 12405 12515 12577 12812 12852 12857 12860 12893 12907 12938 12944 12950 12953 12963 12971-12972 12977 12983-12985 12992 12994 13021 13040 13055 13076 13149 13182 13225 13265 13277 13301 13676 13796 13814 13964 13968 13992 13995 13997 14005 14011 14048 14060 14063 14076 14115 14118 14172 14198 14214 14226 14231 14239 14245 14251 14258 14279 14282 14286 14338-14339 14344 14356 14360-14362 14375 14382 14404 14415 14428-14429 14438 14443 14449 14452 14460 14462 14473 14482 14491 14569 14586 14592 14596 14602 14606 14642-14644 14646 14654-14655 14709 14719 14736 14743 14796 14827 14853 15105 15113 15118 15145 15172 15351 15377 15379 15384 15393 15407 15425 15429-15430 15437 15451 15463 15472 15481 15485-15486 15488 15552 15561 15621 15632 15639 15648 15739 15750 15752 15764-15765 15839 16243 16260 16871 16886 20400 20728 20753 20755 20764 20776 20809 20816 20826 20829 20855 20887 20951 20980 21215 21218 21315 21512 21523 21526-21527 21529 21551 21600 21609 21650-21651 21666 21695 21706 21729 21732 21739 21756 21792 21818 21948 22047 22053 22093 22103 22123 22137 22160 22166 22180 22182 22226 22228 22279-22280 22362 22478 22660 22816 23389 23576 23594 23616 23626 23658 23663 23688 23704 23734 23746 23794 23830 23905 23949 24008 24036 24140 24361 24368 24379 24394-24395 24484 24497 24555 25008 27192 28126 28675 28678 28680 28685 28699-28700 28703 28705 28711 28713 28726 28732-28734 28738 28746 28751 28754 28756 28766 28769-28774 28780 28782-28784 28791 28796 28805 28816-28817 28819 28825 28829 28834-28835 28840-28841 28843 28848 28850 28852 28854-28856 28858 28860 28872-28873 28876 28879-28882 28885-28887 28892 28898 28908 28910 28917 28920 28922-28923 28938 28941 28943 28958 28963 28969 28972 28975-28977 28980 28984 28986 28991 29003 29022 29024 29036-29037 29052-29053 29056-29057 29062-29063 29070 29078-29079 29081 29086-29087 29089 29092 29094 29096 29100 29104-29105 29109 29118 29121 29130 29134 29142 29145-29147 29160-29161 29164 29166 29168 29171 29174 29177 29182 29189 29193 29200-29202 29205-29207 29209 29213 29233 29236 29250 29253-29255 29257 29259 29266-29267 29274 29280 29286 29297 29309 29317 29326 29350 29393 29405 29415 29427 29445-29446 29448-29449 29451 29454 29457 29460 29465-29466 29470 29472 29477 29496 29502 29506 29509 29516-29517 29520 29523 29531 29537 29554 29563 29566 29595 29613 29654 29693 29718 29743 29799 29840 29852 29857 29859 29866 29868 29879 29886 29899 29915 29937 30110 30135 30186 30208 30217 30226-30227 30246-30247 30258 30263-30264 30276 30278 30288 30303-30305 30308 30310 30312-30313 30327-30328 30331 30337 30340 30349 30357-30358 30379 30385 30390 30430-30431 30435 30438 30472 30480 30491 30504-30505 30511 30518 30522 30527 30595 30598 30615 30631 30637 30656-30658 30665 30675 30684 30686-30687 30699 30806 31026 31095 31318 31670 31775 31847 31895 32020-32021 32035 32044 32066 32068 32071 32078 32083 32092 32101 32109 32124 32193 32372 32571 32581 33029 33790 34207 36130 36938 37110 37151 37191 37204 37212 37234 37277 37316-37317 37322-37324 37332 37337 37348 37354 37361 37364 37661 37686 37693 37697 37701 37708 37710 37727 37731 37733 37735 37739 37745 37783 37835-37836 37851 37890 37895 37913-37915 37918 37929 37934 37948 37959 37962-37963 37982 38000-38002 38022-38023 38028 38031 38034 38041 38043 38057 38063 38075 38105 38151 38187 38230 38364 38433 38436 38475 38512 38538 38563 38569 38763 39029 39143 39194 39198-39199 39232 39261 39278-39280 39283 39291 39320 39405 39407 39419 39497 39709 39717 39741 39745 39754 39775 39801 39822 39852 39860 39871 39874 39877 39935 39956 40040 40064 40070 40075 40114 40117 40130 40168 40279 40433 40452 40480 40510 40525 40571 40577 40587 40599 40610 40613-40614 40621 40629 41145 41174 41177 41186 41213 41268 41336 41371 41404 41406 41434 41437 41439 41442 41448 41461 41464 41466-41467 41470-41471 41495 41558 41572 41574 41576 41580-41581 41596 41608 41617 41622 41640-41641 41646 41653 41656 41664 41674 41679 41683 41705 41713 41728-41729 41732 41752 41754-41755 41763 41768-41769 41774 41789 41792-41793 41800 41802 41808-41809 41826 41831-41832 41842 41874 41886 41892 41896 41903 41912 41920 41940 41946 42004-42005 42034 42037 42044 42074 42088 42090 42094-42095 42099 42139-42140 42147-42148 42151 42153 42155 42157 42160 42162 42169 42174 42180 42185 42188 42192 42209 42222 42227 42291 42295-42296 42306 42312-42313 42315 42354-42355 42358 42361 42363 42375 42383 42389 42392 42396 42413 42419 42422 42425 42435 42437 42446 42454 42460 42464 42470 42474 42478-42480 42485 42490 42494-42495 42502 42505 42511 42521 42536 42547 42572 42579 42599 42601 42621 42632 42659 42664-42665 42691 42709 42711 42753 42773 42792 42795 42811 42842 42853 42872 42893 43012 43016 43021 43024 43035 43039 43044 43046 43048-43049 43063 43083 43087 43092 43138-43139 43169 43273 43296 43360 43579 43648 43787 44048 44416 44703 44707 45243 46712 47100 47202 47627 47663 47711 47785 47793 47799 47859 47871 47921 48005 48009 48017 48032 48107 48146 48775-48776 48803 48951 490831.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/1004/220?format=asciiOpticaldefaultJ/ApJ/1004/220/table1Gaia DR3 sources identified as CSPNerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPNGName given in PNG nomenclature (LLL.l+BB.b)meta.id;meta.maincharNameCommon namemeta.idcharGaiaDR3Gaia DR3 ID numbermeta.idRA_ICRSRight Ascension (ICRS) at Ep=2016.0degpos.eq.ra;meta.mainDE_ICRSDeclination (ICRS) at Ep=2016.0degpos.eq.dec;meta.mainGmag? Apparent magnitude in Gaia G bandmagphot.mag;em.optfloatnullableBP-RP? Gaia BP-RP colourmagphot.color;em.opt.B;em.opt.RfloatnullableRUWERenormalised unit weight error (ruwe)stat.errorfloatPlxGaia DR3 parallax (1)maspos.parallaxfloate_PlxGaia DR3 parallax uncertainty (2)masstat.error;pos.parallaxfloatAng-SepAngular distance to the nebular centre (3)arcsecpos.angDistancefloatGroup[ABC] Identification reliability group (4)pos.lgcharAVInterstellar extinction in V magnitude (5)magphys.absorptionfloat(BP-RP)0? De-reddened Gaia BP-RP colourmagphot.color;em.opt.B;em.opt.RfloatnullableSimbadNameSimbad column added by the CDSmeta.idcharnullableJ/ApJ/1004/220/table3Catalogue of distancesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPNGName given in PNG nomenclaturemeta.id;meta.maincharNameCommon namemeta.idcharRadiusNebular geometric mean angular radius (1)arcsecphys.angSize;stat.meanfloatlogSH-alpha surface brightness (2)0.1mW.m**-2.sr**-1phot.flux;spect.linefloate_logSH-alpha surface brightness uncertainty (2)0.1mW.m**-2.sr**-1stat.errorfloatE(B-V)Reddening (2)magphot.color.excessfloate_E(B-V)Reddening uncertaintymagstat.errorfloatVpec? Peculiar velocitykm/sphys.velocfloatnullablee_Vpec? Peculiar velocity uncertaintykm/sstat.errorfloatnullableDHeliocentric distance (3)kpcpos.distance;pos.heliocentricfloatE_DHeliocentric distance upper error (3)kpcstat.error;stat.maxfloate_DHeliocentric distance lower error (3)kpcstat.errorfloatRGalactocentric distance (4)kpcpos.distance;pos.galactocentricfloatSimbadNameSimbad column added by the CDSmeta.idcharnullableE_RGalactocentric distance upper error (4)kpcstat.error;stat.maxfloate_RGalactocentric distance lower error (4)kpcstat.errorfloatRxGalactocentric distance x-component (5)kpcpos.distance;pos.galactocentricfloatE_RxRx upper error (5)kpcstat.error;stat.maxfloate_RxRx lower error (5)kpcstat.errorfloatRyGalactocentric distance y-component (5)kpcpos.distance;pos.galactocentricfloatE_RyRy upper error (5)kpcstat.error;stat.maxfloate_RyRy lower error (5)kpcstat.errorfloatRzGalactocentric distance z-component (5)kpcpos.distance;pos.galactocentricfloatE_RzRz upper error (5)kpcstat.error;stat.maxfloate_RzRz lower error (5)kpcstat.errorfloatFlag[*] CSPN identification flag (6)meta.code.errorcharOH? Oxygen abundance in log(O/H)+12 (7)phys.abundfloatnullablee_OH? Oxygen abundance uncertainty (7)stat.errorfloatnullable_RAPositions from Simbad ans HASH (right ascension part)degpos.eq.ra;meta.main_DEPositions from Simbad ans HASH (declination part)degpos.eq.dec;meta.main