Fluorine in R Coronae Borealis Stars

dc.contributor.author	Pandey, G
dc.contributor.author	Lambert, D. L
dc.contributor.author	Kameswara Rao, N
dc.date.accessioned	2008-02-29T05:58:58Z
dc.date.available	2008-02-29T05:58:58Z
dc.date.issued	2008
dc.identifier.citation	Astronomical Society of the Pacific Conference Series, Vol. 391, pp. 35 - 38	en
dc.identifier.uri	http://hdl.handle.net/2248/2094
dc.description	Open Access
dc.description.abstract	Neutral fluorine lines are identified in the optical spectra of several R Coronae Borealis stars (RCBs) at maximum light. These lines provide the first measurement of the fluorine abundance in these stars. Fluorine is enriched in some RCBs by factors of 800 to 8000 relative to its likely initial abundance. The overabundances of fluorine are evidence for the synthesis of fluorine. These results are discussed in the light of the scenario that RCBs are formed by accretion of an He white dwarf by a C-O white dwarf. Sakurai's object (V4334 Sgr), a final He-shell flash product, shows no detectable neutral fluorine lines.	en
dc.format.extent	79546 bytes
dc.format.mimetype	application/pdf
dc.language.iso	en	en
dc.publisher	Astronomical Society of the Pacific	en
dc.relation.uri	http://arxiv.org/abs/0712.3971	en
dc.relation.uri	http://www.aspbooks.org/a/volumes/article_details/?paper_id=28736	en
dc.rights	© Astronomical Society of the Pacific	en
dc.subject	Stars: abundances—stars	en
dc.subject	Chemically Peculiar—stars: evolution	en
dc.title	Fluorine in R Coronae Borealis Stars	en
dc.type	Article	en