Morphology & Kinematics of the ‘Born—Again’ Planetary Abell 78

  • R. E. S. Clegg
  • M. N. Devaney
  • A. P. Doel
  • C. N. Dunlop
  • J. V. Major
  • R. M. Myers
  • R. M. Sharples
Conference paper
Part of the International Astronomical Union / Union Astronomique Internationale book series (IAUS, volume 155)

Abstract

Abell 78 is one of a group of planetaries having an old, H-rich nebula surrounding a hot star which has more recently ejected highly-processed, H-deficient material. The A78 central star has O VI emission lines and a 3700 km s-1 hot wind, and is surrounded by knots of very dusty, H-deficient material. These objects are thought to have suffered a late helium shell flash which resulted in the central star (then a white dwarf) returning to the AGB and ejecting highly-processed material.

Keywords

Accretion Disk White Dwarf Free Spectral Range Central Star Planetary Nebula 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Springer Science+Business Media Dordrecht 1993

Authors and Affiliations

  • R. E. S. Clegg
    • 1
  • M. N. Devaney
    • 1
  • A. P. Doel
    • 2
  • C. N. Dunlop
    • 2
  • J. V. Major
    • 2
  • R. M. Myers
    • 2
  • R. M. Sharples
    • 2
  1. 1.Royal Greenwich ObservatoryCambridgeUK
  2. 2.Physics Dept.University of DurhamDurhamUK

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