| Issue |
EAS Publications Series
Volume 64, 2013
Setting a New Standard in the Analysis of Binary Stars
|
|
|---|---|---|
| Page(s) | 245 - 248 | |
| Section | Advances in Spectroscopic Methods | |
| DOI | https://doi.org/10.1051/eas/1364033 | |
| Published online | 25 February 2014 | |
K. Pavlovski, A. Tkachenko and G. Torres (eds)
EAS Publications Series, 64 (2013) 245–248
Studies of red giants in eclipsing binaries
1 Nicolaus Copernicus Astronomical Center, ul. Rabianska 8, 87-100 Torun, Poland
2 Astronomical Observatory, A. Mickiewicz University, ul. Sloneczna 36, 60-286 Poznan, Poland
3 Pontificia Universidad Catolica de Chile, Av. Vicuna Mackenna 4860, 7820436 Macul, Santiago, Chile
We present absolute physical and orbital parameters for double-lined detached eclipsing binary systems from the All Sky Automated Survey (ASAS) catalogue with subgiant and giant components. The radial velocities were calculated from high quality optical spectra we obtained with the 8.2 m Subaru/hds, ESO 3.6 m/harps, 1.9 m Radcliffe/giraffe, CTIO 1.5 m/chiron, and 1.2 m Euler/coralie using the two-dimensional cross-correlation technique (todcor) and synthetic template spectra chosen for every system separately as references. We checked the evolutionary status of the systems with several sets of evolutionary tracks and determined distances for each system. The derived uncertainties for individual masses and radii of components are better than 3% for several systems. Additionally, we performed atmospheric parameters determination and chemical abundances analysis for the system which spectra we disentangled.
© EAS, EDP Sciences, 2014