Study On Metallicity Distribution In Dwarf Spheroidal Sculptor

It takes great significance for Astronomy to study metallicity distribution(MD)in dwarf spheroidal galaxies(dsph).For it can help us understand not only star formation,supernovae but galaxies.Here we pay our attention to Sculptor which includes representatively abundant observed data for better studying MD.Commonly MD is a pretty complex evolution influenced by explosion mechanism,explosion rate,star formation rate,infall and outflow.In this paper,with modified QW model we take different solar mass progenitor into consideration.And in nucleosynthesis we get rid of unstable isotopic elements for β decay.Then with normalized star formation function,reasonable given infall and outflow we simulate MD containing elements Co,Mn,Ni and Ti,whose curves are also showed in this paper.We believe that it benefits observation for our model can explain most present observed data.This model still works even some data are out of our expected values.And this problem can solved if we update star formation rate and infall.