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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

References

Berger, J., & Greenstein, J.L. 1963, PASP, 75, 336 Google Scholar
Fadeyev, Yu.A., & Lynas-Gray, A.E. 1996, MNRAS, 280, 427 Google Scholar
Hill, P.W., Kilkenny, D., Schönberner, D., & Walker, H.J. 1981, MNRAS, 197, 81 Google Scholar
Iben, I. 1990, ApJ, 353, 215 Google Scholar
Iben, I., & Tutukov, A.V. 1984, ApJS, 55, 335 Google Scholar
Jeffery, C.S. 1984, MNRAS, 210, 731 Google Scholar
Jeffery, C.S., & Hill, P.W. 1996, The Observatory, 116, 156 Google Scholar
Jeffery, C.S., Hill, P.W., & Heber, U. 1999, A&A, 346, 491 Google Scholar
Jeffery, C.S., Woolf, V.M., & Pollacco, D. 2001, A&A 376, 497 Google Scholar
Kilkenny, D., & Lynas-Gray, A.E. 1982, MNRAS, 198, 873 Google Scholar
Kilkenny, D., Lynas-Gray, A.E., & Roberts, G. 1996, MNRAS, 283, 1349 Google Scholar
Landolt, A.U. 1975, ApJ, 196, 787 Google Scholar
Lynas-Gray, A.E., Schönberner, D., Hill, P.W., & Heber, U. 1984, MNRAS, 209, 387 Google Scholar
Montañès Rodríguez, P., & Jeffery, C.S. 2001, A&A, 375, 411 Google Scholar
Montañès Rodríguez, P., & Jeffery, C.S. 2002, A&A, 384, 433 Google Scholar
Saio, H. 1986, MNRAS, 221, 1P Google Scholar
Saio, H. 1993, MNRAS, 260, 465 Google Scholar
Saio, H., & Jeffery, C.S. 2000, MNRAS, 313, 671 CrossRefGoogle Scholar
Sweigart, A.V. 1997, in The Third Conference on Faint Blue Stars, ed. Philip, A.G.Davis, Liebert, J.W., & Saffer, R.A. (Schenectady: L. Davis Press), 3 Google Scholar