NOAO > Observing Info > Approved Programs > 2010A-0416
|
NOAO > Observing Info > Approved Programs > 2010A-0416 |
|
PI: Todd R. Vaccaro, Francis Marion University, tvaccaro@fmarion.edu
Address: Physics Department, PO Box 100547, Florence, SC 29502, USA
CoI: Stephane Vennes, Astronomical Institute, AVCR
CoI: Adela Kawka, Astronomical Institute, AVCR
Title: Low Mass Eclipsing Binaries
Abstract: We request KPNO 4m time to obtain red spectra of several low-mass eclipsing binaries. Good signal to noise spectra (20-30) at high dispersion (0.5Aper pixel) are needed to get velocities at the 5- 8km/s precision. Velocities will be coupled with contemporaneous photometry so that light and velocity curves can be used to determine the masses, radii, and luminosities using a binary star program (Wilson- Devinney) as well as modeling dark spots due to magnetic activity. The binaries’ refined masses and radii will enable comparisons to current models (M-R relations) of these poorly sampled 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 > 2010A-0416 |
|