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Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/3248
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dc.contributor.authorAsplund, M-
dc.contributor.authorGustafsson, B-
dc.contributor.authorLambert, D. L-
dc.contributor.authorKameswara Rao, N-
dc.date.accessioned2008-08-22T10:21:37Z-
dc.date.available2008-08-22T10:21:37Z-
dc.date.issued1997-05-
dc.identifier.citationAstronomy and Astrophysics , Vol. 321, No. 2, pp. L17 - L20en
dc.identifier.issn0004-6361-
dc.identifier.urihttp://hdl.handle.net/2248/3248-
dc.description.abstractThe surface chemical composition of this remarkable star shows that it is hydrogen-deficient, carbon-rich and enriched in the light s-process elements. Spectra taken in May and October 1996 indicate a decrease in the surface hydrogen abundance by 0.7dex in five months along with an increase in the abundances of Li, Sr, Y and Zr. The abundance changes are in agreement with the hypothesis of the star being a rapidly evolving "born-again" AGB star experiencing a final He-shell flash, similar to FGSge. The Sup/12C/sup/13C ratio in October is very low, also suggesting hydrogen ingestion. By chemical composition, Sakurai's object resembles the R Coronae Borealis (RCrB) stars.en
dc.format.extent205916 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.publisherEuropean Southern Observatoryen
dc.relation.urihttp://aa.springer.de/bibs/7321002/2300l17/small.htmen
dc.subjectStars: Individual: Sakurai's Objecten
dc.subjectStars: Evolutionen
dc.subjectStars: AGB And Post-AGBen
dc.subjectStars: Abundancesen
dc.subjectStars: Variables: Otheren
dc.subjectStars: Individual: FG SGEen
dc.titleA stellar endgame - the born-again Sakurai's objecten
dc.typeArticleen
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