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Preliminary report on IUE spectra of the Crab Nebula (1981)

Kafatos, M. ; Trimble, V. L. ; Stecher, T. P. ; [et al.]

In: CASI

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Publication Date: 2016-06-07

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 lambda 1549, He II lambda 1640, and C III lambda 1909 emission lines. The intensities of these lines were compared with the visual wavelength data. It appears that carbon is not overabundant in the Crab; carbon/oxygen is approximately normal and oxygen is slightly scarcer than normal as a fraction of the total mass.

Keywords: ASTROPHYSICS

Type: The Universe at Ultraviolet Wavelengths: The First Two Yrs. of Intern. Ultraviolet Explorer; p 696-700

Format: application/pdf

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