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SPECTROSCOPY OF THE CRAB NEBULA

ROBERT A. FESEN, ROBERT P. KIRSHNER and ROGER A. CHEVALIER
Publications of the Astronomical Society of the Pacific
Vol. 90, No. 533 (February 1978), pp. 32-35
Stable URL: http://www.jstor.org/stable/40677112
Page Count: 4
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SPECTROSCOPY OF THE CRAB NEBULA
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Abstract

Detailed inspection of a spectrogram of the Crab nebula covering λ4450-6100 reveals the presence of faint forbidden lines of iron and nitrogen, most of which have not been observed before in the Crab. Only some filaments showed these emission features which are of low ionization and are emitted near the high density cores of filaments.

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