Abstract
We present a revised classification scheme for late WC-type stars based on new high quality optical observations of seven stars. For consistency with the usual WC scheme (Smith, ApJ 358 229 1990), our principal diagnostic is CIV λ5801/C III λ5696, while C III λ5696/CII λ4267, and He II λ4686/He I λ5876 serve as secondary criteria. Our quantitative scheme forms an natural extension to the existing WC scheme and provides an unambiguous definition of subtypes, with natural breaks found between subclasses.
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© 1997 Springer Science+Business Media Dordrecht
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De Marco, O., Crowther, P.A., Barlow, M.J. (1997). Quantitative Spectral Classification of Late WC Stars. In: Habing, H.J., Lamers, H.J.G.L.M. (eds) Planetary Nebulae. International Astronimical Union / Union Astronomique Internationale, vol 180. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5244-0_4
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DOI: https://doi.org/10.1007/978-94-011-5244-0_4
Publisher Name: Springer, Dordrecht
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