THE ECLIPSING DOUBLE-LINED SPECTROSCOPIC BINARY-SYSTEM V505 PERSEI

The recently-discovered eclipsing double-lined spectroscopic binary V5 05 Persei (SAG 23229) consists of two nearly identical F5 main sequenc e stars in a 4.2 day orbit. We have obtained both spectroscopic and ph otometric observations of the binary that densely sample the complete cycle of radial velocity and light variations, These observations have been used to determine the elements of the orbit, to determine indivi dual masses of the stars in the system to a precision of better than 1 %, and to estimate an age for the system. The derived properties agree well with current stellar structure models and provide fundamental da ta for tests of stellar evolution theory. (C) 1997 American Astronomic al Society.