A spectroscopic analysis of the eclipsing Nova-like EC21178-54

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dc.contributor.advisorWoudt, Patrick Alanen_ZA
dc.contributor.authorKhangale, Zwidofhelangani Ndamuleloen_ZA
dc.date.accessioned2014-11-05T03:55:23Z
dc.date.available2014-11-05T03:55:23Z
dc.date.issued2013en_ZA
dc.descriptionIncludes bibliographical references.en_ZA
dc.description.abstractEC21178-54 is a 13.7 magnitude eclipsing nova-like (NL) cataclysmic variable (CV) discovered in the Edinburgh-Cape survey of blue objects. It has an orbital period of 3.708 hours. High-speed photometric analysis of its light curve reveal that this system is a rich source of quasi-periodic oscillations (QPOs), dwarf nova oscillations (DNOs) and the other type of periodic oscillations called longer period dwarf nova oscillations (lpDNOs). Its light curve shows a deep symmetrical V-shaped primary eclipse, and its spectra show strong broad double-peaked emission. In this project we present phase-resolved spectroscopy of the eclipsing nova-like CV EC21178-54. The average spectrum of EC21178-54 shows broad double-peaked emission lines from HeII 4686Å, and the Balmer series. HeII 4686Å dominates the Balmer lines; and in the Balmer lines the blueshifted component is the stronger of the two. The high-excitation feature, CIII/NIII at 4640-4650 Å, is also present and appear broad in emission. A number of other lines, mostly HeI, are clearly present in absorption and/or emission.en_ZA
dc.identifier.apacitationKhangale, Z. N. (2013). <i>A spectroscopic analysis of the eclipsing Nova-like EC21178-54</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Astronomy. Retrieved from http://hdl.handle.net/11427/9185en_ZA
dc.identifier.chicagocitationKhangale, Zwidofhelangani Ndamulelo. <i>"A spectroscopic analysis of the eclipsing Nova-like EC21178-54."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Astronomy, 2013. http://hdl.handle.net/11427/9185en_ZA
dc.identifier.citationKhangale, Z. 2013. A spectroscopic analysis of the eclipsing Nova-like EC21178-54. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Khangale, Zwidofhelangani Ndamulelo AB - EC21178-54 is a 13.7 magnitude eclipsing nova-like (NL) cataclysmic variable (CV) discovered in the Edinburgh-Cape survey of blue objects. It has an orbital period of 3.708 hours. High-speed photometric analysis of its light curve reveal that this system is a rich source of quasi-periodic oscillations (QPOs), dwarf nova oscillations (DNOs) and the other type of periodic oscillations called longer period dwarf nova oscillations (lpDNOs). Its light curve shows a deep symmetrical V-shaped primary eclipse, and its spectra show strong broad double-peaked emission. In this project we present phase-resolved spectroscopy of the eclipsing nova-like CV EC21178-54. The average spectrum of EC21178-54 shows broad double-peaked emission lines from HeII 4686Å, and the Balmer series. HeII 4686Å dominates the Balmer lines; and in the Balmer lines the blueshifted component is the stronger of the two. The high-excitation feature, CIII/NIII at 4640-4650 Å, is also present and appear broad in emission. A number of other lines, mostly HeI, are clearly present in absorption and/or emission. DA - 2013 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2013 T1 - A spectroscopic analysis of the eclipsing Nova-like EC21178-54 TI - A spectroscopic analysis of the eclipsing Nova-like EC21178-54 UR - http://hdl.handle.net/11427/9185 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/9185
dc.identifier.vancouvercitationKhangale ZN. A spectroscopic analysis of the eclipsing Nova-like EC21178-54. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Astronomy, 2013 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/9185en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Astronomyen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.titleA spectroscopic analysis of the eclipsing Nova-like EC21178-54en_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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