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Period Stability on Pulsating White Dwarfs

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White Dwarfs

Part of the book series: NATO Science Series ((NAII,volume 105))

Abstract

We have been studying the pulsation periods for the DAV variable white dwarf star G117-B15A for the last 27 years, showing it is an extremely stable pulsator and measuring the rate of pulsation period, directly related to the cooling of the white dwarf. On the other hand, the pulsating DBV GD358 shows changes in amplitudes and frequencies on every timescale we studied it since 1990. The phases also change at least as fast as a monthly timescale.

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Author information

Authors and Affiliations

  1. Instituto de Física, Universidade Federal do Rio Grande do Sul, 91501-970, Porto Alegre, RS, Brasil

    S. O. Kepler & J. E. S. Costa

  2. Department of Astronomy and McDonald Observatory, University of Texas, Austin, TX, 78712-1083, USA

    D. E. Winget, R. E. Nather & Anjum Mukadam

  3. Apache Point Observatory, P.O. Box 59, Sunspot, NM, 88349, USA

    A. Nitta-Kleinman

  4. Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD, 21218, USA

    M. S. O’Brien

Authors
  1. S. O. Kepler
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  2. J. E. S. Costa
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  3. D. E. Winget
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  4. R. E. Nather
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  5. Anjum Mukadam
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  6. A. Nitta-Kleinman
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  7. M. S. O’Brien
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Editor information

Editors and Affiliations

  1. INAF — Osservatorio Astronomico di Capodimonte, Napels, Italy

    Domitilla de Martino  & Roberto Silvotti  & 

  2. Universitetet i Tromsø, Norway

    Jan-Erik Solheim

  3. Vilnius University, Vilnius, Lithuania

    Romualdas Kalytis

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© 2003 Springer Science+Business Media Dordrecht

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Kepler, S.O. et al. (2003). Period Stability on Pulsating White Dwarfs. In: de Martino, D., Silvotti, R., Solheim, JE., Kalytis, R. (eds) White Dwarfs. NATO Science Series, vol 105. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0215-8_72

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  • DOI: https://doi.org/10.1007/978-94-010-0215-8_72

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-1-4020-1364-5

  • Online ISBN: 978-94-010-0215-8

  • eBook Packages: Springer Book Archive

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