ON THE NORMAL SPECTRAL ENERGY-DISTRIBUTION OF STARS - SPECTRAL TYPES O9-B5

The normal energy distributions for fifteen spectral subtypes from O9 to B5 for luminosity classes V, IV, and III are derived. Three photome trically uniform catalogs served as the source of the spectrophotometr ic data used. Synthetic color indices for all spectral types are calcu lated using the energy distribution curves obtained. Comparison of the se indices with the expected normal color indices suggests that the en ergy distributions derived are reliable.