Interferometric obs. of B-type stars with CHARA

The observations provide the angular sizes of these stars with an average error of 6%. The stars range in size from 1.09mas for {beta} Tau down to 0.20mas for 32 Ori.

We collected ultraviolet to infrared spectrophotometry and derived temperatures, angular diameters, and reddening estimates that best fit the spectra, as well as solutions with the angular size fixed by the interferometric measurements. There is generally good agreement between the observed and spectral fit angular diameters, indicating that the fluxes predicted from model atmospheres are reliable. On the other hand, the temperatures derived from angular diameters and fluxes tend to be larger (by ~4%) than those from published results based on analysis of the line spectrum.