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White Dwarfs pp 115–118Cite as

The effects of time dependant convection on white dwarf radial pulsations

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Part of the book series: Lecture Notes in Physics ((LNP,volume 328))

Abstract

We have investigated the effects of relaxing the normal assumption of frozen in convection on studies of radial instabilities in 0.6M⊙ carbon-oxygen white dwarfs with either pure hydrogen layers overlying pure helium layers or 0.6M⊙ carbon-oxygen white dwarfs with pure helium surface layers. In this paper we assume that convection can adjust to the pulsation at a rate determined by the time scale of a convective eddy. Using this assumption in our analysis stabilizes most of the modes in both the DA and DB radial instability strips. We also find that the blue edge of the DA radial instability strip, assuming frozen in convection, is between 12,000K and 13,000K. The blue edge for the DB radial instability strip (frozen in convection) is between 32,000K and 33,000K.

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Author information

Authors and Affiliations

  1. Theoretical Division, T-6, MSB288, Los Alamos National Laboratory, 87545, Los Alamos, NM

    S. Starrfield

  2. Department of Physics Arizona State University, 85287, Tempe, AZ

    S. Starrfield

  3. Theoretical Division, T-6, MS B288, 87545, Los Alamos, N.M.

    A. N. Cox

Authors
  1. S. Starrfield
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  2. A. N. Cox
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Gary Wegner

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© 1989 Springer-Verlag

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Starrfield, S., Cox, A.N. (1989). The effects of time dependant convection on white dwarf radial pulsations. In: Wegner, G. (eds) White Dwarfs. Lecture Notes in Physics, vol 328. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-51031-1_299

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  • DOI: https://doi.org/10.1007/3-540-51031-1_299

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-51031-4

  • Online ISBN: 978-3-540-46136-4

  • eBook Packages: Springer Book Archive

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