  The orbit and physical parameters of the double-lined eclipsing binary V570
Per, discovered by the Hipparcos satellite, are derived with formal errors
better than 1% using high resolution Echelle spectroscopy and B, V
photoelectric photometry. Atmospheric analysis is performed on spectra at
quadrature using synthetic spectroscopy that indicates a [Fe/H]=+0.02+/-0.05
metallicity. V570 Per turns out to be a detached system, with shallow eclipses
of Delta B = Delta V =0.13 mag amplitude at a distance of 123+/-3 pc, in fine
agreement with Hipparcos 117 (lower lim. 104, upper lim. 132) pc distance. V570
Per is composed by unperturbed components of F2 and F5 spectral types and
masses of 1.457+/-0.004 and 1.351+/-0.004 Msun respectively, which do not show
surface activity. Both components are still within the Main Sequence band and
are dynamically relaxed to co-rotation with the orbital motion. The system is
particularly interesting because both components have their masses in the range
where transition occurs between convective and radiative cores, and where
differences between families of stellar evolutionary tracks show appreciable
differences. The position of the components of V570 Per on the
temperature-luminosity plane is compared with Padova, Geneva, Granada and
Teramo-04 theoretical stellar models. The comparison provides different best
fit metallicities and ages, with [Fe/H] ranging from +0.07 to +0.18, and ages
from 0.6 to 1.0 Gyr.
