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Description

The Crab Nebula is marginally observable with the IUE. Observations of the optically brightest filamentary regions, made with IUE in August 1979, show the C IV x1549, He II x1640, and C III] x1909 emission lines. The intensities of these lines have been compared with visual-wavelength data. It appears that carbon is not overabundant in the Crab; carbon/- oxygen is approximately "normal" oxygen is slightly scarcer than "normal" as a fraction of the total mass.

Publication Date

1981

Publisher

NASA

Keywords

Crab Nebula, IUE, International Ultraviolet Observer, UV, ultraviolet, carbon, oxygen

Disciplines

Instrumentation | Stars, Interstellar Medium and the Galaxy

Comments

In R.D. Chapman (Ed.), The Universe at Ultraviolet Wavelengths: The First Two Years of International Ultraviolet Explorer. Proceedings of a symposium held at NASA Goddard Space Flight Center, Greenbelt, MD, May 7-9, 1980.

Peer Reviewed

1

Copyright

Public Domain

Preliminary Report on IUE Spectra of Crab Nebula

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