event
Wednesday 23 Mar 2011: Quantitative spectroscopy of close binary stars
Dr. Kresimir Pavlovski - University of Zagreb, Croatia
Physics, 4th Floor interaction area 11:00-12:00
The complexity of composite spectra of close binaries makes the study of the individual component spectra extremely difficult. For this reason there exists very little information on the chemical composition of stars in close binaries, despite the importance of this for understanding the evolution of stars and of close binary systems. A way round this problem exists: spectral disentangling allows a time-series of composite spectra to be separated into their individual components. The results of an ongoing project to obtain the atmospheric parameters and the elemental abundances of stars in binary systems using spectral disentangling would be presented. Emphasis would be given to observational properties of high-mass stars, and comparison to theoretical predictions of rotational evolutionary models.
