W. J. Maciel -
Abstract #65
THE METALLICITY DISTRIBUTION OF G DWARFS AND THE HISTORY OF THE SFR IN THE SOLAR NEIGHBOURHOOD
H. J. Rocha-Pinto, W. J. Maciel
Stellar Abundances, ed. B. Barbuy, W. J. Maciel, J. C. Gregório-Hetem, IAG/USP, São Paulo, 67-70 (1996) We present a method to obtain the history of the local star formation rate (SFR) by using the G dwarf metallicity distribution. The method is tested by simulations and applied to the solar neighbourhood. We find strong evidences for two events of star formation: a big burst 8 Gyr ago, and a "lull" 2-3 Gyr ago. We also find evidences of a less intense burst 5-6 Gyr ago and a present star formation burst. These events agree with some previous determinations of the history of the local SFR.
