The Average Physical Properties of A-G Stars Derived from uvby-H$\beta$ Strömgren-Crawford Photometry as the Basis for a Spectral-Classification Synthetical Approach

G. Dalle Mese, O. López-Cruz, W. J. Schuster +2

We have revisited and updated the $uvby$ Strömgren colour and colour-index distributions of A, F and early G-type main sequence stars. For this aim, we selected 7054 dwarf stars al…