Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/2093
Title: Fluorine in R Coronae Borealis Stars
Authors: Pandey, G
Lambert, D. L
Kameswara Rao, N
Keywords: stars;abundances—stars;chemically peculiar—stars;evolution
Issue Date: Feb-2008
Publisher: University of Chicago Press
Citation: The Astrophysical Journal, Vol. 674, pp. 1068 – 1077
Abstract: Neutral fluorine (F i) 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 800–8000 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 F i lines.
URI: http://hdl.handle.net/2248/2093
???metadata.dc.relation.uri???: http://www.journals.uchicago.edu/doi/abs/10.1086/526492
http://arxiv.org/abs/0711.2363
Appears in Collections:IIAP Publications

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