ON THE NORMAL ENERGY-DISTRIBUTION IN STEL LAR SPECTRA - MAIN-SEQUENCEB-STAR

The normal energy distribution in the spectra of main-sequence B stars of five subclasses is presented. The spectral classification and UBV photometry from the fourth edition of the Bright Star Catalogue and sp ectrophotometry from three extensive spectrophotometric catalogs are u sed. The method of selecting unreddened stars is outlined. The good ag reement between the mean color indices in the UBV system calculated fo r a sample of stars with spectrophotometry and for considerably larger samples of unreddened stars of the corresponding subclasses from the Bright Star Catalogue confirms the reliability of the results obtained .