Pulsations in the white dwarf primary of a cataclysmic variable star

 

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dc.contributor.advisor Warner, Brian en_ZA
dc.contributor.author Van Zyl, Liza Marie en_ZA
dc.date.accessioned 2016-03-17T07:17:47Z
dc.date.available 2016-03-17T07:17:47Z
dc.date.issued 1999 en_ZA
dc.identifier.citation Van Zyl, L. 1999. Pulsations in the white dwarf primary of a cataclysmic variable star. University of Cape Town. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/17896
dc.description Includes bibliographical references. en_ZA
dc.description.abstract The field of Asteroseismology provides powerful techniques for the study of pulsating white dwarf stars. If these techniques could be applied to the white dwarf primaries of Cataclysmic Variable stars, the study of accretion in interacting binary systems would benefit enormously. Our understanding of normal modes in white dwarf pulsators would benefit likewise from the study of how they respond to accretion. This dissertation presents the analysis of preliminary observations of the Dwarf Nova GW Librae , the first Cataclysmic Variable star found to have a DAY primary. A brief introduction to Cataclysmic Variables and the pulsating white dwarfs is given, and the significance of GW Librae to these fields of study is discussed. In this dissertation I present the analysis of 7 weeks of high speed CCD observations obtained on GW Librae during 1997 and 1998. The power in the pulsation spectrum concentrates principally in regions near 376s and 650s. GW Librae has a pulsation spectrum that shows dramatic changes on a monthly basis, typical of the pulsating DA white dwarfs. en_ZA
dc.language.iso eng en_ZA
dc.subject.other Astronomy en_ZA
dc.title Pulsations in the white dwarf primary of a cataclysmic variable star en_ZA
dc.type Master Thesis
uct.type.publication Research en_ZA
uct.type.resource Thesis en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Science en_ZA
dc.publisher.department Department of Astronomy en_ZA
dc.type.qualificationlevel Masters
dc.type.qualificationname MSc en_ZA
uct.type.filetype Text
uct.type.filetype Image
dc.identifier.apacitation Van Zyl, L. M. (1999). <i>Pulsations in the white dwarf primary of a cataclysmic variable star</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Astronomy. Retrieved from http://hdl.handle.net/11427/17896 en_ZA
dc.identifier.chicagocitation Van Zyl, Liza Marie. <i>"Pulsations in the white dwarf primary of a cataclysmic variable star."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Astronomy, 1999. http://hdl.handle.net/11427/17896 en_ZA
dc.identifier.vancouvercitation Van Zyl LM. Pulsations in the white dwarf primary of a cataclysmic variable star. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Astronomy, 1999 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/17896 en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Van Zyl, Liza Marie AB - The field of Asteroseismology provides powerful techniques for the study of pulsating white dwarf stars. If these techniques could be applied to the white dwarf primaries of Cataclysmic Variable stars, the study of accretion in interacting binary systems would benefit enormously. Our understanding of normal modes in white dwarf pulsators would benefit likewise from the study of how they respond to accretion. This dissertation presents the analysis of preliminary observations of the Dwarf Nova GW Librae , the first Cataclysmic Variable star found to have a DAY primary. A brief introduction to Cataclysmic Variables and the pulsating white dwarfs is given, and the significance of GW Librae to these fields of study is discussed. In this dissertation I present the analysis of 7 weeks of high speed CCD observations obtained on GW Librae during 1997 and 1998. The power in the pulsation spectrum concentrates principally in regions near 376s and 650s. GW Librae has a pulsation spectrum that shows dramatic changes on a monthly basis, typical of the pulsating DA white dwarfs. DA - 1999 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1999 T1 - Pulsations in the white dwarf primary of a cataclysmic variable star TI - Pulsations in the white dwarf primary of a cataclysmic variable star UR - http://hdl.handle.net/11427/17896 ER - en_ZA


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