Chemical composition of photospheres in RS CVn stars
Abstract
In order to investigate how magnetic activity influences a stellar evolution, we undertake a detailed study of photospheric abundances in a sample of RS CVn stars. Using the Nordic Optical Telescope we investigate abundances of more than 20 chemical elements, including carbon isotopes, nitrogen and other mixing-sensitive species. In this presentation we report on current results of the analysis, among which there are first evidences that extra-mixing processes may start acting in low-mass chromospherically active stars below a bump of the luminosity function of red giants.
- Publication:
-
Solar and Astrophysical Dynamos and Magnetic Activity
- Pub Date:
- July 2013
- DOI:
- 10.1017/S1743921313002548
- Bibcode:
- 2013IAUS..294..207T
- Keywords:
-
- Stars: abundances;
- stars: evolution;
- stars: magnetic fields