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Chemical compositions and plasma parameters of planetary nebulae with Wolf-Rayet and wels type central stars

hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierObservatoire astronomique de Strasbourg [OAS]
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorGIRARD, Pascal
hal.structure.identifierObservatoire astronomique de Strasbourg [OAS]
hal.structure.identifierInstitut fur Theoretische Physik und Astrophysik [Kiel]
hal.structure.identifierInternational Space University
dc.contributor.authorKOPPEN, J.
hal.structure.identifierObservatoire astronomique de Strasbourg [OAS]
dc.contributor.authorACKER, A.
dc.date.created2007
dc.date.issued2007
dc.identifier.issn0004-6361
dc.description.abstractEnAims: Chemical compositions and other properties of planetary nebulae around central stars of spectral types [WC], [WO], and wels are compared with those of `normal' central stars, in order to clarify the evolutionary status of each type and their interrelation. Methods: We use plasma diagnostics to derive from optical spectra the plasma parameters and chemical compositions of 48 planetary nebulae. We also reanalyze the published spectra of a sample of 167 non-WR PN. The results as well as the observational data are compared in detail with those from other studies of the objects in common. Results: The central star's spectral type is clearly correlated with electron density, temperature and excitation class of the nebula, [WC] nebulae tend to be smaller than the other types. All this corroborates the view of an evolutionary sequence from cool [WC 11] central stars inside dense, low excitation nebulae towards hot [WO 1] stars with low density, high excitation nebulae. The wels PN, however, appear to be a separate class of objects, not linked to WRPN by evolution, --abridged--
dc.language.isoen
dc.publisherEDP Sciences
dc.title.enChemical compositions and plasma parameters of planetary nebulae with Wolf-Rayet and wels type central stars
dc.typeArticle de revue
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Cosmologie et astrophysique extra-galactique [astro-ph.CO]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]
dc.identifier.arxivastro-ph/0611149
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.page265-274
bordeaux.volume463
bordeaux.peerReviewedoui
hal.identifierhal-00119849
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00119849v1
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