J/AJ/141/134ivo://CDS.VizieR/J/AJ/141/134doi:10.26093/cds/vizier.51410134CDSSahai R.Morris M.R.Villar G.G.2021-04-14T08:09:00Z2012-09-06T15:45:30ZCDS support team

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

cds-question@unistra.frplanetary-nebulaegalaxy-classification-systemsUsing Hubble Space Telescope images of 119 young planetary nebulae (PNs), most of which have not previously been published, we have devised a comprehensive morphological classification system for these objects. This system generalizes a recently devised system for pre-planetary nebulae, which are the immediate progenitors of PNs. Unlike previous classification studies, we have focused primarily on young PNs rather than all PNs, because the former best show the influences or symmetries imposed on them by the dominant physical processes operating at the first and primary stage of the shaping process. Older PNs develop instabilities, interact with the ambient interstellar medium, and are subject to the passage of photoionization fronts, all of which obscure the underlying symmetries and geometries imposed early on. Our classification system is designed to suffer minimal prejudice regarding the underlying physical causes of the different shapes and structures seen in our PN sample, however, in many cases, physical causes are readily suggested by the geometry, along with the kinematics that have been measured in some systems. Secondary characteristics in our system, such as ansae, indicate the impact of a jet upon a slower-moving, prior wind; a waist is the signature of a strong equatorial concentration of matter, whether it be outflowing or in a bound Keplerian disk, and point symmetry indicates a secular trend, presumably precession, in the orientation of the central driver of a rapid, collimated outflow.2011AJ....141..134Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/141/134CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/hst : HST Archived Exposures Catalog (STScI, 2007)V/84 : Strasbourg-ESO Catalogue of Galactic Planetary Nebulae (Acker+, 1992)J/A+AS/76/317 : Possible new PNe in IRAS PSC (Preite-Martinez, 1988)J/ApJS/112/487 : Planetary nebulae classification (Soker 1997)J/A+AS/132/13 : Planetary nebulae radial velocities (Durand+ 1998)J/A+A/458/173 : Optical spectroscopy of 253 IRAS sources (Suarez+, 2006)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/141/134https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/141/134http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/141/134https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/141/134https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/141/134http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/141/134GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/141/134/table3 (Properties of young planetary nebulae)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/141/134/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/141/134/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/141/134/table3?GETtext/xml+votable180.050000true250.9740994-18.95331920.005555555555555556Cone search capability for table J/AJ/141/134/table5 (Morphological classification for PNs from HST program GO 11657)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/141/134/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/141/134/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/141/134/table5?GETtext/xml+votable180.050000true279.2962917-19.03941670.0055555555555555566/1223 1244 2883 3152 3353 12852 12984 12992 13036 13055 13796 14005 14076 14118 14239 14279 14339 14363 14390 14428 14443 14452 14596 14642 14792 14796 14827 14922 15430 15481 15632 15681 20816 20826 20951 21215 22166 22816 24361 28675 28711 28717 28718 28722 28728 28732 28747 28754 28777 28779 28782 28825 28836 28838 28840 28841 28843 28854 28856 28865 28868 28869 28871 28885 28898 28906 28907 28908 28922 28963 28975 29064 29078 29092 29096 29146 29150 29160 29189 29198 29200 29250 29254 29255 29266 29286 29297 29350 29451 29454 29470 29566 29852 29870 30208 30214 30305 30340 30390 30472 30491 30615 30637 30684 30687 30712 30803 31847 32066 32193 32571 37151 37191 37212 37322 37337 37661 37731 37890 38000 38023 38028 39029 39198 39279 39935 41174 41336 41371 41434 41470 41576 41582 41617 41646 41679 41799 41832 41920 42044 42090 42162 42168 42283 42321 42343 42425 42426 42452 42479 42483 42493 42599 42795 42828 43268 47921 48005 48017https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/141/134?format=asciiOpticaldefaultJ/AJ/141/134/table3Properties of young planetary nebulael_V2Limit flag on V2meta.code.errorcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSamSample (<=1 or >1) defined from line ratio R_exc_=[OIII]{lambda}5007/H{alpha} ratiosrc.samplePKObject name in PK (Perek-Kohoutek) formatmeta.idcharPNGObject name in PNG formatmeta.id;meta.maincharn_PNG[12/54]? Note on object, in notes.dat filemeta.noteintnullablePPrimary classification and secondary descriptor related to whether the lobes (or the shell in the case of an E primary classification) are open or closed (1)meta.code.classcharCRSecondary descriptors for the central region (1)meta.code.classcharPSSecondary descriptors describing the symmetry (1)meta.code.classcharOSAll remaining secondary descriptors (1)meta.code.classcharl_RexcLimit flag on Rexcmeta.code.errorcharRexc[0/4.5] Line flux ratio R_exc_=[OIII]{lambda}5007/H{alpha}phot.flux;arith.ratiofloatSize[0.6/61.3] Angular size of the objectarcsecphys.angSizefloatV1[5.5/41]? Expansion velocity measured from the [NII]{lambda}6583 line ratio as listed in the Acker+ (1992, V/84)km/sphys.veloc.expansionfloatnullableV2[4/70]? Expansion velocity measured from the [OIII] line as listed in the Acker+ (1992, V/84)km/sphys.veloc.expansionfloatnullableDist[0.6/24.8]? Distance to the objectkpcpos.distance;pos.heliocentricfloatnullableAge[170/13676]? Derived expansion ageyrtime.ageintnullableXbox[2.2/69.7]? Size of the panel (along the horizontal axis) in the figure of the object (~size of nebula)arcsecphys.angSize;srcfloatnullableFigThe number of the figure showing the objectmeta.numbercharSimbadSimbad column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/AJ/141/134/table5Morphological classification for PNs from HST program GO 11657recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSamSample with R_exc_=[OIII]{lambda}5007/H{alpha} ratio <=1 or >1meta.idPNGObject name in PNG formatmeta.id;meta.maincharf_PNGFlag on PNG (1)meta.codecharPPrimary classificationmeta.code.classcharCRSecondary descriptors for the central regionmeta.code.classcharPSSecondary descriptors describing the symmetrymeta.code.classcharOSAll remaining secondary descriptorsmeta.code.classcharl_RexcLimit flag on Rexcmeta.code.errorcharRexc[0/4] Line flux ratio R_exc_=[OIII]{lambda}5007/H{alpha}phot.flux;arith.ratiofloatFig[19/20.9]? The number of the figure showing the objectmeta.numberfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/AJ/141/134/table2*Morphological classification codesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintChar[PS] Primary or Secondary characteristicsmeta.codecharTypeCharacteristics used for the class (1)meta.code.classcharClassClassification codemeta.code.classcharTextExplanation of the classification codemeta.notecharJ/AJ/141/134/notesNotesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNoteNote numbermeta.noteintTextText of the notemeta.notechar