The effects of differential reddening on the UBV colors of Pleiades members have been removed for stars earlier than (B-V)0 = 1.00m, and the dereddened colors have been found to exhibit an ultraviolet excess of delta(U-B) = +0.03m with respect to Hyades stars. A correction of +0.15m in mV at constant (B-V) has been derived for the Hyades main sequence to adjust it to Pleiades metallicity, and this has been fit to Pleiades late-type dwarfs in order to define a new photometric ZAMS for typical solar neighborhood stars of spectral types A, F, and G. A zero-point of 3.15 was adopted for the Hyades distance modulus based upon a review of available astrometric data, and the corresponding Pleiades distance modulus is 5.56.
No takes yet. Share an insight, caveat, or question.
D. G. Turner (1979) studied this question.