Ultraviolet spectra of supernova remnants obtained with the IUE satellite provide unique information concerning the shock conditions and elemental abundances in the optically bright filaments. High temperature species such as N V provide diagnostics for shock velocities above 100 k/s, and strong lines of carbon and silicon in the IUE spectral range make it possible to study the destruction of refractory grains in shocked interstellar gas. Observations of a nonradiative shock at the edge of the Cygnus Loop provide constraints on the physics of the shock front itself. Most of the very young remnants whose optical spectra show anomalous elemental abundances are too highly reddened for IUE observations, but extensive observations of the Crab Nebula and a spectrum of the supernova remnant in NGC 4449 yield carbon to oxygen ratios from which the mass of the progenitor may be estimated.
IUE observations of supernova remnants
1982-01-01
Sonstige
Keine Angabe
Englisch
IUE observations of supernova remnants
Elsevier | 1982
|BBXRT Observations of Supernova Remnants
British Library Conference Proceedings | 1993
|BBXRT observations of supernova remnants
NTRS | 1993
|BBXRT observations of supernova remnants
Elsevier | 1993
|Einstein observations of supernova remnants
NTRS | 1982
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