On the evolutionary status of WR-type planetary nebula nuclei.
Tylenda R., Gorny S.K.
1993, Acta Astr. 43, 389
Abstract:
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The planetary nebula nuclei showing WR-type spectra constitute a unique
class of the central stars: they are He-burners. This work presents
preliminary results of a study analyzing the observational characteristics
of the WR-type nuclei and their nebulae. The existing He-burning models
cannot account for the observations of the WR-type nuclei. In the discussion
we consider two scenaria: (i) WR-type nuclei are single stars; (ii) WR
phenomenon is en evolutionary phase of binary systems.
If you wish a copy of this paper please mail me:
skg@ncac.torun.pl
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