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A Search for Pulsations in O VI Planetary Nuclei

Published online by Cambridge University Press:  07 August 2017

Howard E. Bond  and
Robin Ciardullo
Howard E. Bond
Affiliation:
Space Telescope Science Institute Baltimore, Maryland USA
Robin Ciardullo
Affiliation:
Pennsylvania State University University Park, Pennsylvania USA

Extract

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The first two pulsating central stars of planetary nebulae to be discovered were those of K 1–16 (Grauer & Bond 1984) and Lo 4 (Bond & Meakes 1990). They are nonradial, multiperiodic g-mode pulsators, with typical periods near 25–31 min. They are O VI nuclei or related objects, with extremely high temperatures (T eff ≳ 100,000 K), hydrogen deficiency, and high abundances of C and O.

Type
V. Planetary Nebulae Connection: Evolution to White Dwarfs
Information
Symposium - International Astronomical Union , Volume 155: Planetary Nebulae , 1993 , pp. 489
Copyright
Copyright © Kluwer 1993 

References

Bond, H.E., and Meakes, M.G. 1990, AJ, 100, 788 Google Scholar
Grauer, A.D., and Bond, H.E. 1984, ApJ, 277, 211 Google Scholar