Talk abstract details

Constraints of a pulsation frequency on stellar parameters in an eclipsing binary system.

O.L. Creevey (IAC), F. Pinheiro (Porto, Portugal), S. Sousa (Porto, Portugal), J.A. Belmonte (IAC), J. Telting (NOT, La Palma, Spain), G. Handler (Vienna, Austria), T. M. Brown (LCOGT, USA), D. Terrell (SWRI, USA), A. Zhou (Beijing, China).

Abstract

We present an analysis of the binary system V577Oph, observed during the summer of 2007 on the 2.5m NOT telescope on La Palma. We have obtained time series spectroscopic observations, which show clear binary motion as well as radial velocity variations due to pulsation in the primary star. The binary orbital solution coupled with a photometric measurement of inclination enables a mass determination of both components. Knowing the mass of the primary star allows us to use the pulsation period to constrain other physical parameters of the star. We discuss our initial inference on these parameters, such as metallicity, effective temperature and mode identification --- these emphasize the power that a single pulsation frequency can have for constraining stellar parameters.