The Binary Nature of the Barium and CH Stars. III. Orbital Parameters

摘要: Results are presented from a 10-year program to monitor the velocity variations of Ba II and CH stars, showing that all stars binaries. Radial-velocity observations for binaries given. Also, results orbit calculations orbital element determinations analyzed. It is shown eccentricities star orbits significantly lower than sample normal G K giants. In addition, those suggesting dissipation due mass exchange, probably previous AGB star. The functions indicate come samples binary systems with small dispersion in ratios. If assumed have masses 1.5 0.8 solar mass, respectively, then their companions would near 0.6 similar values expected white dwarfs. 45 refs.