EAS Publications Series
Volume 64, 2013Setting a New Standard in the Analysis of Binary Stars
|Page(s)||37 - 45|
|Section||Setting a New Standard in the Analysis of High-Mass Binary Stars|
|Published online||25 February 2014|
K. Pavlovski, A. Tkachenko and G. Torres (eds)
EAS Publications Series, 64 (2013) 37-45
Quantitative spectroscopy of OB stars: from dwarfs to supergiants
1 Institute for Astro- and Particle Physics, University of Innsbruck, Technikerstr. 25/8, 6020 Innsbruck, Austria
2 Dr. Karl Remeis-Observatory & ECAP, University of Erlangen-Nuremberg, Sternwartstr. 7, 96049 Bamberg, Germany
3 University Observatory, University of Munich, Scheinerstr. 1, 81679 Munich, Germany
We discuss recent progress made in the spectral modelling of OB stars from the main sequence to evolved phases as BA-type supergiants. Non-LTE line-formation computations can now reproduce observed spectra over the entire optical and near-IR wavelength range with high confidence, facilitating stellar atmospheric parameters and elemental abundances to be determined at high accuracy and precision. An overview is given how the fundamental stellar parameters of single stars determined in our new approach compare to high-precision data derived from detached eclipsing massive binary stars. Finally, the observational constraints for a sample of Galactic objects are put in context with state-of-the-art evolution models for rotating massive stars.
© EAS, EDP Sciences, 2014
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