Abstract:
Having any knowledge about the velocity dispersion of dwarf galaxies enables us to know more about their matter content. The main goal is to find any relation between the matter content and the luminosity of dwarf galaxies. The mass of these galaxies could be read from the velocity dispersion of their stars. The luminosity of these galaxies come from the photometric data and the velocity dispersion is well estimated using spectroscopic data. We are using Deimos red arm spectra including very deep Calcium triplet absorption lines. In this talk, the methods of measuring the velocity dispersion from the broadening of these lines will be discussed