Taxonomy of Barium Stars
Abstract
Spectral classification, barium intensity, radial velocity, luminosity, and kinematical properties are determined for 389 barium stars by analyzing image-tube spectra and photometric observation data. Disk kinematics for the stars are based on whether they are Ba weak or Ba strong. Weak barium stars in general have smaller velocity dispersions, brighter apparent magnitude, and lower luminosity than strong barium stars. These characteristics are confirmed by solving for mean spectroscopic distances, z-scale height distances, and reduced proper motions.
- Publication:
-
The Astronomical Journal
- Pub Date:
- June 1991
- DOI:
- 10.1086/115845
- Bibcode:
- 1991AJ....101.2229L
- Keywords:
-
- Barium;
- Late Stars;
- Metallic Stars;
- Stellar Spectrophotometry;
- Taxonomy;
- Dwarf Stars;
- Radial Velocity;
- Stellar Luminosity;
- Stellar Magnitude;
- Astrophysics;
- STARS: BA II