Graeme H. Smith1
Abstract.
A sample of field dwarfs with spectroscopic metallicities derived on a uni-
form abundance scale by Valenti & Fischer is compared with Hyades main sequence
stars in various photometric diagrams. Field dwarfs with metallicities 0.14 ≤ [Fe/H] ≤
0.29 are found to match the Hyades (m1 , b − y) locus very well. In both the (MV , B− V)
colour-magnitude diagram and the (c1 , b − y) diagram the Hyades main sequence is
found to form a lower envelope to the field dwarfs of this metallicity range. There is
no evidence in the comparisons made for the so-called Hyades anomaly.
1
University of California Observatories/Lick Observatory, University of California, Santa Cruz,
CA 95064, USA