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Lithium in LMC carbon stars | D. Hatzidimitriou
; D. H. Morgan
; R. D. Cannon
; B. F. W. Croke
; | Date: |
16 Apr 2003 | Journal: | Mon.Not.Roy.Astron.Soc. 341 (2003) 1290 | Subject: | astro-ph | Abstract: | Nineteen carbon stars that show lithium enrichment in their atmospheres have been discovered among a sample of 674 carbon stars in the Large Magellanic Cloud. Six of the Li-rich carbon stars are of J-type, i.e. with strong 13C isotopic features. No super-Li-rich carbon stars were found. The incidence of lithium enrichment among carbon stars in the LMC is much rarer than in the Galaxy, and about five times more frequent among J-type than among N-type carbon stars. The bolometric magnitudes of the Li-rich carbon stars range between -3.3 and -5.7. Existing models of Li-enrichment via the hot bottom burning process fail to account for all of the observed properties of the Li-enriched stars studied here. | Source: | arXiv, astro-ph/0304297 | Services: | Forum | Review | PDF | Favorites |
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