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| dc.contributor.author | Asplund, M | |
| dc.contributor.author | Gustafsson, B | |
| dc.contributor.author | Lambert, D. L | |
| dc.contributor.author | Kameswara Rao, N | |
| dc.date.accessioned | 2008-08-22T10:21:37Z | |
| dc.date.available | 2008-08-22T10:21:37Z | |
| dc.date.issued | 1997-05 | |
| dc.identifier.citation | Astronomy and Astrophysics , Vol. 321, No. 2, pp. L17 - L20 | en |
| dc.identifier.issn | 0004-6361 | |
| dc.identifier.uri | http://hdl.handle.net/2248/3248 | |
| dc.description.abstract | The 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.extent | 205916 bytes | |
| dc.format.mimetype | application/pdf | |
| dc.language.iso | en | en |
| dc.publisher | European Southern Observatory | en |
| dc.relation.uri | http://aa.springer.de/bibs/7321002/2300l17/small.htm | en |
| dc.subject | Stars: Individual: Sakurai's Object | en |
| dc.subject | Stars: Evolution | en |
| dc.subject | Stars: AGB And Post-AGB | en |
| dc.subject | Stars: Abundances | en |
| dc.subject | Stars: Variables: Other | en |
| dc.subject | Stars: Individual: FG SGE | en |
| dc.title | A stellar endgame - the born-again Sakurai's object | en |
| dc.type | Article | en |
