Spectrophotometry of B, A, and F stars

Energy distributions of 33 normal B, A, and F stars for wavelengths 3300-7100 are given that are consistent with the Hayes-Latham calibration of Vega. The derived upper limit on the photometric accuracy using a comparison of observed and synthetic u-b and b-y indices is 0.010 mag and 0.008 mag, respectively. Effective temperatures found using empirical calibrations agree with those derived using fully line-blanketed model atmospheres. Effective temperatures are found for selected spectral types.