Asbolute magnitudes of barium stars based on the width of Hα in absorption

Absolute magnitudes of Ba II stars determined from the width of Hα indicate that these stars have, on the average, the luminosity of normal G and K giants. There may, however, be some Ba stars of luminosity class IV. The distribution of stars in absolute magnitude does not seem to depend on Ba line strength. (3 figs, 10 refs) (auth)