NOAO >   Observing Info >   Approved Programs >   2014B-0056

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Proposal Information for 2014B-0056


PI: Todd Hillwig, Valparaiso University, Todd.Hillwig@valpo.edu
Address: Neils Science Center, Valparaiso, IN, 46383, USA

CoI: Dave Jones, Universidad de Atacama
CoI: Steve Margheim, Gemini Observatory

Title: Determining Stellar Parameters of Eclipsing Binary Central Stars of Planetary Nebulae

Abstract: Binary central stars of planetary nebulae are valuable tools with which to study the evolution of close binary systems. We propose to obtain orbit-resolved spectra of three eclipsing binary central stars of planetary nebulae in order to determine the physical parameters of those systems and add to a small number of already well-analyzed systems. The study of these binary systems has direct impacts on a number of astrophysical studies including common envelope evolution, the ejection and shaping of planetary nebulae, formation of cataclysmic variables, and the formation of Type IA supernova progenitors.


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