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Title:
Five New Low-Mass Eclipsing Binary Systems
Authors:
Coughlin, Jeffrey L.; López-Morales, M.; Shaw, J. S.
Affiliation:
AA(Emory University), AB(Carnegie Institution of Washington), AC(University of Georgia)
Publication:
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #151.13; Bulletin of the American Astronomical Society, Vol. 38, p.1104
Publication Date:
12/2006
Origin:
AAS
Bibliographic Code:
2006AAS...20915113C

Abstract

We present the discovery of five new low-mass eclipsing binaries with masses between 0.54 and 0.95 Msun, their photometric light curves, and preliminary models. This is part of a continuing campaign to increase the available data on these interesting systems. Once radial-velocity curves are completed, physical parameters will be determined with an error of less than 2-3%, thus allowing for a rigorous examination of stellar models in the lower-main sequence. Our initial analysis seems to support the current findings that low-mass stars have greater radii than models predict, most likely due to the presence of strong magnetic fields. This work is funded by a partnership between the National Science Foundation (NSF AST-0552798) Research Experiences for Undergraduates (REU) and the Department of Defense (DoD) ASSURE (Awards to Stimulate and Support Undergraduate Research Experiences) programs.
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