The chemical evolution of gas-rich dwarf galaxies

  title={The chemical evolution of gas-rich dwarf galaxies},
  author={Theo Ib Larsen and J. Sommer-Larsen and Bernard E. J. Pagel},
A numerical double burst model of the chemical evolution of gas-rich dwarf galaxies has been developed. The model is fitted to a sample of N/O, O/H, Y and gas fraction observations, where N/O and O/H are the relative abundances by number of nitrogen to oxygen and oxygen to hydrogen, respectively. Y is the abundance by mass of helium. Closed models as well as models including enriched outflow, ordinary outflow and ordinary outflow combined with inflow are considered.The bursts are assumed to be… CONTINUE READING


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