1999•arXiv (Cornell University)Open access
The age-mass relation for chromospherically active binaries: III.\n Lithium depletion in giant components
D. Barrado, Estefania Castro, M. J. Fernández-Figueroa, M. Cornide, R. J. Garcı́a López
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Abstract
We present a study of the lithium abundances of a sample of evolved\ncomponents of Chromospherically Active Binary Systems. We show that a\nsignificant part of them have lithium excesses, independently of their mass and\nevolutionary stage. Therefore, it can be concluded that Li abundance does not\ndepend on age for giant components of CABS. These overabundances appear to be\nclosely related to the stellar rotation, and we interpret them as a consequence\nof the transfer of angular momentum from the orbit to the rotation as the stars\nevolve in and off the Main Sequence, in a similar way as it happens in the\ndwarf components of the same systems and in the Tidally Locked Binaries\nbelonging to the Hyades and M67.\n
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