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New and misclassified Planetary Nebulae
Published online by Cambridge University Press: 25 May 2016
Extract
This fifth supplement to the ‘Catalogue of Galactic Planetary Nebulae’ (CGPN - Perek, Kohoutek, 1967) covers the period 1991-1994 and contains four lists. In Table 1 we present 86 new PN, their PK designations, names and equatorial coordinates together with the references of their discovery as PN (!). The summary of the main properties of a PN and of a central star (Paper III) was used. We believe that the mean values given there are still valid, although some ‘limits’ (in parentheses) of the data have to be changed. It concerns mainly PN with very young central stars (stellar temperature down to ≈ 20000 K, gravity down to log g ≈ 3-4, variable spectrum) as well as old PN (diameter of the main nebular body up to ≈ 2.5 pc). Besides, large exp. velocity up to ≈ 300 km/s was measured for the nebular outer structure.
- Type
- I. Introduction
- Information
- Copyright
- Copyright © Kluwer 1997