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An imaging and spectroscopic survey of the Abell Planetary Nebulae

Published online by Cambridge University Press:  25 May 2016

N. A. Walton ,
J. R. Walsh  and
G. Dudziak
N. A. Walton
Affiliation:
1Isaac Newton Group, Royal Greenwich Observatory, La Palma
J. R. Walsh
Affiliation:
2European Southern Observatory, Munich
G. Dudziak
Affiliation:
2European Southern Observatory, Munich

Extract

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The Abell catalogue of planetary nebulae (PN) are distinguished by their large size, low surface brightness and generally faint central stars. They are thought to be old PN approaching the White Dwarf cooling track. A number have evidence for late thermal pulses (H-poor ejecta near the central star, e.g. A78) and binary central stars.

Type
IV. Envelopes
Information
Symposium - International Astronomical Union , Volume 180: Planetary Nebulae , 1997 , pp. 287
Copyright
Copyright © Kluwer 1997 

References

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