Ultraviolet spectrum and probable chemical composition of the high-excitation planetary nebula M1-1

One of the highest excitation planetary nebulae known, M1-1, was studied with the image-tube scanner on the Shane 3-m telescope at Lick Observatory and with the International Ultraviolet Explorer. Large fractions of abundant elements such as C, N, O, S, and Ar exist in unobservable stages of ionizat...

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Veröffentlicht in:	Proc Natl Acad Sci U S A
Hauptverfasser:	Aller, Lawrence H., Keyes, Charles D., Feibelman, Walter A.
Format:	Artigo
Sprache:	Inglês
Veröffentlicht:	National Academy of Sciences 1986
Schlagworte:	Physical Sciences: Astronomy
Online-Zugang:	https://ncbi.nlm.nih.govhttps://pmc.ncbi.nlm.nih.gov/articles/PMC323389/ https://ncbi.nlm.nih.govhttps://pubmed.ncbi.nlm.nih.gov/16593688/ https://ncbi.nlm.nih.govhttps://doi.org/10.1073/pnas.83.9.2777
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