Observational Database and Statistical Properties of Proto-planetary
Nebulae.
Szczerba R., Gorny S.K, Zlfresso-Jundzillo M.
2001, in Proceedings of the conference "Post-AGB objects as a phase
of stellar evolution", eds. R. Szczerba & S.K. Gorny, ASSL 265,
Kluwer Academic Publishers, Boston/Dordrecht/London, p.13
Abstract:
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We analyze statistical properties of proto-palnetary nebulae in sample
of about 220 objects selected from the literature. First we discuss problem
of the candidates selection and then present distribution over the spectral
type and on the IRAS color-color diagram. We analyze also galactic distribution
of proto-planetary nebual candidates from the created database.
Gzipped PostScript version of this paper is available:
stat_PPNe.ps.gz
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