O2+ Recombination abundances in planetary nebulae
We present O2+/H+ abundances derived from echelle spectroscopy of fourplanetary nebulae, NGC 6210, NGC 6826, Hu2{1, NGC 6543, from the forbidden,collisionally excited lines, and from the permitted recombination lines. We ndthat the ratio of the recombination line to collisional line abundances range...
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| Udgivet i: | Revista Mexicana de Astronomía y Astrofísica |
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| Principais autores: | , |
| Format: | Artigo |
| Sprog: | Inglês |
| Udgivet: |
Universidad Nacional Autónoma de México
2001
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| Online adgang: | https://www.redalyc.org/articulo.oa?id=57101013 |
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