NOAO >   Observing Info >   Approved Programs >   2004B-0455

Small NOAO Logo

Proposal Information for 2004B-0455


PI: Leslie Hebb, Johns Hopkins Univ., leslieh@pha.jhu.edu
Address: Dept Physics & Astronomy, 3400 N. Charles St., Baltimore, MD 21218, USA

CoI: Dr. Rosemary F. G. Wyse, Johns Hopkins Univ
CoI: Dr. Gerard Gilmore, Institute of Astronomy, Cambridge University

Title: The Masses of Low Mass Stars: Radial Velocity Curve of a Candidate M2V/M4V Eclipsing Binary System in NGC 1647

Abstract: We propose to obtain a radial velocity curve of a candidate M-dwarf eclipsing binary system in the Galactic open cluster NGC 1647. We have discovered the system through our analysis of light curves derived from our large photometric dataset of selected open clusters, obtained with the Mosaic detector on the KPNO-4m telescope. Radial velocity measurements are necessary first to assess the binary nature and cluster membership of the candidate system. If this is confirmed, the observations will lead to a derivation of the orbital solution for the system and ultimately the masses and radii of the component stars in the binary. These observations will be used to better calibrate the mass- luminosity relation as a function of age and metallicity, a fundamental, but poorly constrained quantity for low-mass stars.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2004B-0455

noaoprop-help@noao.edu

Small NOAO Logo