Odessa Astronomical Publications (Dec 2008)

THE MODELLING OF THE MASS-METALLICITY RELATION FOR THE LOCAL GROUP DWARF GALAXIES

  • M. V. Ryabova,
  • Yu. A. Shchekinov

DOI
https://doi.org/10.18524/1810-4215.2008.21.86871
Journal volume & issue
Vol. 21, no. 0
pp. 100 – 101

Abstract

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We present results of modelling of the mass-metallicity relation for the Local Group dwarf spheroidal (dSph) galaxies. In this work, we use a single-zone chemo-dynamical model. Our model is based on the scheme suggested by C. Firmani and A. Tutukov (1992). The behaviour of the dark-to-visible mass ratio has been taken from M.-M. Mac Low & A. Ferrara (1998). We have considered two classes of models: open and closed. The obtained mass- metallicity relation for the open model shows that the galaxies can be divided into two distinct classes: low-mass (Mtot 108Msun) groups which agrees with observation data.