Abstract
The first observation of the far UV, emission line spectrum of a supernova remnant (SNR), namely a filament in the Cygnus Loop, suggests that carbon, initially depleted in the gaseous phase by a factor of 10, is progressively returned to this phase, presumably by destruction of graphite grains in the high temperature, post-shock region.
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Benvenuti, P., D'Odorico, S. & Dopita, M. UV spectrum of supernova remnant reveals carbon depletion in the interstellar medium. Nature 277, 99–102 (1979). https://doi.org/10.1038/277099a0
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DOI: https://doi.org/10.1038/277099a0
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