New grids of stellar models. IV.

To explore the applicability of high metallic models, we have computed three grids: (X, Z)=(0.64, 0.04), (0.58, 0.06), and (0.46, 0.10). For all these grids, we adopted an enrichment law {Delta}Y/{Delta}Z=2.0, as in our previous papers on this subject.

The input physics is almost the same as adopted in our earlier work except for some numerical details, recent measurement of the rate for the reaction ^14^N(p,gamma)^15^O, and the recent mass-loss rate for the Wolf-Rayet stages. Two high-metallicity clusters, NGC 6253 and NGC 6791, were used to test the present calculations with very satisfactory results. On the other hand, as this series of grids was mainly designed to investigate the tidal evolution of close binaries, we analyse the present status of circularization times in both clusters and isolated binaries.