NOAO > Observing Info > Approved Programs > 2010A-0202
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NOAO > Observing Info > Approved Programs > 2010A-0202 |
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PI: Stephen J. Williams, Georgia State University, swilliams@chara.gsu.edu
Address: Physics Department, P.O. Box 4106, Atlanta, GA 30302-4106, USA
CoI: Douglas R. Gies, Georgia State University
CoI: Rachel A. Matson, Georgia State University
Title: Spectroscopic Orbits for Eclipsing Binaries Among the NASA Kepler Observatory Targets
Abstract:
We are starting a program of precise photometry with the NASA Kepler
Observatory to search for variations in minimum light timing for
intermediate mass eclipsing binaries. Such periodic variations will
reveal the reflex motion caused by any distant, low mass object that
orbits the close binary. Kepler's unprecedented accuracy and continuous
observations provide a unique opportunity to detect low mass companions
to these targets, down to a few Jupiter masses. To further constrain
the properties of the unseen third companion, we need to determine the
properties of the central binary as well. The goal of this proposal is
to obtain spectra of these targets in order to derive radial velocities
and produce a double-lined spectroscopic orbit. This orbit, when
combined with the eclipsing light curve from Kepler data, will give
highly accurate masses and radii for the components of the central
binary, and will constrain the mass ratio for the unseen companion,
allowing a rough classification of the object.
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-0202 |
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