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V652 Her: Evidence that White Dwarf Mergers Really do Happen

Published online by Cambridge University Press:  12 April 2016

C. Simon Jeffery
C. Simon Jeffery*
Affiliation:
Armagh Observatory, College Hill, Armagh BT61 9DG, Northern Ireland

Abstract

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V652 Herculis is a pulsating B star with a mass of about 0.6 M⊙ and a luminosity of some 1000 L⊙. Its uniqueness is defined by a surface which is predominantly (99%) CNO-processed helium. Precise measurements of its pulsation properties have provided direct tests for stellar pulsation and evolution models. Simulations of the merger of two helium white dwarfs are very successful in explaining its origin.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 187: Exotic Stars as Challenges to Evolution , 2002 , pp. 53 - 58
Copyright
Copyright © Astronomical Society of the Pacific 2002

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