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- W2139587462 abstract "Context. Cool stars, companions to compact objects, are known to show Li abundances which are high compared to field stars of the same spectral type, which are heavily Li depleted. This may be due either to Li production or Li preservation in these systems. Aims. Our aim is to measure the lithium isotopic ratio in the companion star of the neutron star X-ray binary Cen X-4. Methods. We use UVES spectra obtained in years 2000 and 2004 around the orbital quadratures. The spectra are analysed with spectrum synthesis techniques and the errors estimated with Monte Carlo simulations. Results. We measure A(Li) = 2.87± 0.20 and 6 Li/ 7 Li = 0.12 +0.08 −0.05 at 68% confidence level. We also present updated system parameters „ „ „ „ „ „ „ „ „ „" @default.
- W2139587462 created "2016-06-24" @default.
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- W2139587462 date "2007-05-16" @default.
- W2139587462 modified "2023-10-09" @default.
- W2139587462 title "The isotopic 6Li/7Li ratio in Centaurus X-4 and the origin of Li in X-ray binaries" @default.
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- W2139587462 doi "https://doi.org/10.1051/0004-6361:20066875" @default.
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