Physical properties of circumnuclear ionizing clusters: NGC 7742
  We have analyzed the circumnuclear ring of the spiral galaxy NGC7742 in order
to understand its formation and evolution. We have obtained gaseous abundances,
characterized the interstellar medium of the clusters and studied the
properties of the ionizing clusters. We have also implemented a new methodology
using the red wavelength range of optical spectra, with the purpose of
understanding how star formation evolves in high metallicity environments.
