NOAO > Observing Info > Approved Programs > 2010A-0254
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NOAO > Observing Info > Approved Programs > 2010A-0254 |
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PI: Todd Hillwig, Valparaiso University, todd.hillwig@valpo.edu
Address: Dept. of Physics & Astronomy, Neils Science Center, Valparaiso University, Valparaiso, IN 46383, USA
CoI: Orsola De Marco, Macquarie University
CoI: David Frew, Macquarie University
Title: Determining the System Parameters for Poorly Studied Binary Central Stars of Planetary Nebulae: Spectroscopy
Abstract:
Current estimates of the impact of close binary stars on the shaping and
ejection of planetary nebulae include a number of systems for which little
published data exists. Only ten of the currently catalogued 42 binary systems
have been studied both photometrically and spectroscopically. With the
current emphasis in planetary nebula research on determining the role of
binarity in the planetary nebula process, it is imperative that we understand
as well as possible the discovered binary systems. We have obtained
orbit-resolved photometry of six of the poorly studied systems. We propose
here to obtain spectroscopy of these that will allow us to classify each as a
single or double-lined binary system, estimate the radial velocity amplitude,
and pair with the existing photometry to produce more detailed system
descriptions. This information will lead to a better understanding of the
role of binarity in the ejection and shaping of planetary nebulae. The
results will also be used to determine appropriate telescope/instrument
combinations for future orbit-resolved spectroscopy proposals.
National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360
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NOAO > Observing Info > Approved Programs > 2010A-0254 |
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