ACCURATE PARAMETERS of the DOUBLE-Lined ECLIPSING BINARY KIC 9474969 AND COMPARISON WITH ASTEROSEISMOLOGY

Includes bibliographical references (pages 85-86).In the determination of the dimensions of celestial objects, it is important to confirm results through multiple independent methods. Asteroseismology can be employed to determine the stellar density based on the observed pulsation spectrum of a star for which a high quality light curve is available. This stellar density can be used in conjunction with evolutionary models to determine the mass and radius of the star. Alternatively, masses and radii can be determined for eclipsing binary stars based on well-known techniques if radial velocity data are available. We present masses and radii for the double-lined eclipsing binary KIC 9474969, which is a target that has great potential for seeking mass and radius confirmation through asteroseismic means. Stellar parameters for this system were found using short cadence photometric observations collected over the course of 25 months by the Kepler spacecraft as well as ground-based radial velocity data. Analyzing the eclipses and radial velocity data, we find mass and radius measurements accurate at the ~ 1 % level. We compare our results with mass-radius relations from stellar evolutionary models and find an approximate age of ~ 2 Gyr. Finally, we compare our results with preliminary mass and radius measurements from asteroseismology and find favorable agreement