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G.A. Vazquez, J.J. Gonzalez (Instituto de Astronomia U.N.A.M. Mexico, D.F.)
We present spectral indices produced by using a new spectral evolution model of populations. They are calculated based on calibrations from Gorgas et al (1993), whose depends on gravity, temperature and metalicity. The populations in isochrons are generated by using tracks from different metalicities. The results are compared whit observations of populations from different objects.
The author(s) of this abstract have provided an email address for comments about the abstract: gerar@astroscu.unam.mx