We thank Ger van Rossum for participation in the early stages of this project and organizing the observations of the 1st dataset. JMW thanks the ESO staff for their help in obtaining the 2nd dataset.
JMB, JMW and DJB acknowledge support from the Deutsche Forschungsgemeinschaft (DFG), in the frame of the Graduiertenkolleg "The Magellanic System and Other Dwarf Galaxies" (GRK 118/2-96). DJB is grateful for a Feodor-Lynen-Fellowship of the Alexander von Humboldt-Foundation.
We thank Antonella Vallenari for discussions, Martin Altmann for critically reading the manuscript and Rob Kennicutt for the scan used in Fig. 1.
© European Southern Observatory (ESO) 1997
Online publication: March 24, 1998