  Circumnuclear star forming regions, also called hotspots, are often found in
the inner regions of some spiral galaxies where intense processes of star
formation are taking place. In the UV, massive stars dominate the observed
circumnuclear emission even in the presence of an active nucleus, contributing
between 30 and 50% to the H$\beta$ total emission of the nuclear zone.
  Spectrophotometric data of moderate resolution (3000 < R < 11000) are
presented from which the physical properties of the ionized gas: electron
density, oxygen abundances, ionization structure etc. have been derived.
