Ultraviolet Observations of Supernovae

Abstract

The motivations to make ultraviolet (UV) studies of supernovae (SNe) are reviewed and discussed in the light of the results obtained so far by means of IUE and HST observations. It appears that UV studies of SNe can, and do lead to fundamental results not only for our understanding of the SN phenomenon, such as the kinematics and the metallicity of the ejecta, but also for exciting new findings in Cosmology, such as the tantalizing evidence for "dark energy" that seems to pervade the Universe and to dominate its energetics. The need for additional and more detailed UV observations is also considered and discussed.

10 pages, 5 figures - Invited talk at the "Supernova 1987A: 20 Years after: Supernovae and Gamma-Ray Bursters" Conference, February 19-23, 2007, Aspen, CO, (AIP Conf. Proc.), eds. S. Immler, R. McCray and K.W. Weiler, in press. Slightly revised version that clarifies some confusing statements

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