COMPARATIVE STUDY OF A [WC 6] NUCLEUS WITH OTHER EMISSION-LINES NUCLEI OF PLANETARY NEBULAE

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dc.creatorAcker, A.
dc.creatorGorny, S. K.
dc.creatorCuisinier, F.
dc.date1995-05-30
dc.date.accessioned2026-07-07T02:19:49Z
dc.date.available2026-07-07T02:19:49Z
dc.descriptionThe central star (CSPN) of the planetary nebula M 1-25 (PN G 4.9+4.9) is classified as a [WC 6] star, the only CSPN of this subclass known at this time. A comparison with the other emission-lines CSPN (the [WC]-class and the 'weak emission-lines stars' or {\em wels}-class) shows that (1) the characteristics of this [WC 6] star fit well inside the main properties of the other [WC] CSPN ; (2) the [WC] CSPN seem to evolve from the [WC 8-11] (latter) to [WC 2-4] (earlier) subclasses, say from dense nebulae with cool stars to more extended nebulae with hot nuclei, as for other CSPN ; (3) on the two-colour IRAS diagram,the [WC] and the {\em wels} CSPN form two different groups : the progenitors of the [WC]-type CSPN seem to be Carbon stars evolving along post-AGB tracks, whereas the {\em wels} CSPN seem to be related to OH/IR stars, some of them having possibly experienced a late helium-flash.
dc.description12 pages, uuencoded compressed postscript file including 8 figures ; accepted for publication in 'Astronomy and Astrophysics'
dc.identifierhttps://arxiv.org/abs/astro-ph/9505138
dc.identifierhttp://arxiv.org/abs/astro-ph/9505138
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/10017
dc.subjectAstrophysics
dc.titleCOMPARATIVE STUDY OF A [WC 6] NUCLEUS WITH OTHER EMISSION-LINES NUCLEI OF PLANETARY NEBULAE
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