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Discovery of a Planetary Nebula Associated by the White Dwarf GD 561
Published online by Cambridge University Press: 07 August 2017
Extract
The search for old planetary nebulae around hot white dwarfs, PG 1159 stars, and sdO stars is subject of intensive studies (e.g. Kwitter et al. 1989). We report here on the discovery of such a nebula around the white dwarf GD 561.
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- V. Planetary Nebulae Connection: Evolution to White Dwarfs
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- Copyright © Kluwer 1993
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