Abstract
AbstractWe review the tracers of star formation in galaxies and show how they demonstrate the presence of bursts of star formation in various astrophysical contexts: large extragalactic HII regions in spiral and irregular galaxies and in blue compact galaxies, nuclei of some galaxies, extended star formation in other galaxies. We show that strong bursts seem to occur mainly in interacting galaxies. A few comments are made about the theory of such phenomena.
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