NOAO >   Observing Info >   Approved Programs >   2003A-0269

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Proposal Information for 2003A-0269


PI: Leslie Hebb, Johns Hopkins University, leslieh@pha.jhu.edu
Address: Physics Department, 3400 N. Charles St, Baltimore, MD 21218, USA

CoI: Rosemary Wyse, Johns Hopkins University
CoI: Gerard Gilmore, IoA, University of Cambridge

Title: Eclipsing Binary M dwarfs and the Low Mass Stellar M/L Ratio

Abstract: We propose to complete our on-going survey with the KPNO-4m of a well selected sample of open clusters to identify candidate eclipsing M- dwarfs through their relative light variations. These clusters are of known distance, age, and metallicity from their higher luminosity turn- off members. The candidate eclipsing M-dwarfs will, with follow-up spectroscopy, be used to calibrate the Mass-Luminosity-Radius relation at low masses, as a function of age and metallicity. This is a fundamental, but poorly constrained quantity for low mass stars. Side benefits of our survey will include an improved knowledge of the binary fraction at low masses. Further, we will obtain a high-quality set of CMDs, as a function of location within a given cluster, to allow investigation of mass segregation and dynamical evolution within open clusters.


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NOAO >   Observing Info >   Approved Programs >   2003A-0269

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