The TGAS HR diagram of barium stars
Abstract
Barium stars are formed via binary interaction with a former AGB companion. Observations are needed to constrain theoretical models and better understand their evolution and surface composition. We present the HR diagram of Ba and related stars, using the recently released TGAS parallaxes, and the mass distribution of the Ba giants that we derived from it.
- Publication:
-
Astrometry and Astrophysics in the Gaia Sky
- Pub Date:
- April 2018
- DOI:
- Bibcode:
- 2018IAUS..330..323E
- Keywords:
-
- stars: binaries;
- stars: evolution;
- Hertzsprung-Russell diagram