Poster Title: Spectroscopic Age and Metallicity of Elliptical Galaxies
Abstract: We obtained extremely high quality optical spectra of 13 elliptical galaxies in Virgo cluster. With those spectra we derived ages and metallicities by using $H\gamma-\sigma$ index which can break age-metallicity degeneracy. The power of this index and high quality data allow us to derive not only age and mean metallicity but also metallicities of each element. There are considerably age dispersion in low sigma galaxies, and correlations which suggest complex star formation history such as [Mg/Fe]-sigma relation etc.
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