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Abundances in the Herbig Ae star HD 101412. Abundance anomalies; λ Boo-Vega characteristics?
(Edp Sciences, 2010-11)
Context. Recent attention has been directed to abundance variations among very young stars.
Aims. We perform a detailed abundance study of the Herbig Ae star HD 101412, taking advantage of its unusually sharp spectral ...
Mass effect on the lithium abundance evolution of open clusters: Hyades, NGC 752, and M67
(EDP Sciences, 2016-03-12)
Lithium abundances in open clusters provide an e ective way of probing mixing processes in the interior of solar-type stars and convection is not the only mixing mechanism at work. To understand which mixing mechanisms are ...
Mn, Cu, and Zn abundances in barium stars and their correlations with neutron capture elements
(EDP SCIENCES S A, 2011)
Barium stars are optimal sites for studying the correlations between the neutron-capture elements and other species that may be depleted or enhanced, because they act as neutron seeds or poisons during the operation of the ...
Chemical composition of a sample of bright solar-metallicity stars
(WILEY-V C H VERLAG GMBH, 2015)
We present a detailed analysis of seven young stars observed with the spectrograph SOPHIE at the Observatoire de Haute-Provence for which the chemical composition was incomplete or absent in the literature. For five stars, ...
Solar twins in M 67: evolutionary status and lithium abundance
(EDP SCIENCES S A, 2011)
Aims. We determine the age and mass of the three best solar twin candidates in open cluster M 67 through lithium evolutionary models. Methods. We computed a grid of evolutionary models with non-standard mixing at metallicity ...
Lithium abundances and extra mixing processes in evolved stars of M 67
(Astronomy & Astrophysics, 2011)
S1242: a lithium-rich subgiant star in the open cluster M 67
(Astronomy & Astrophysics, 2006-05-04)