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Binary interaction along the RGB: The Barium Star perspective
Published online by Cambridge University Press: 30 December 2019
Abstract
Barium (Ba) stars form via mass-transfer in binary systems, and can subsequently interact with their white dwarf companion in a second stage of binary interaction. We used observations of main-sequence Ba systems as input for our evolutionary models, and try to reproduce the orbits of the Ba giants. We show that to explain short and sometimes eccentric orbits, additional interaction mechanisms are needed along the RGB.
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- © International Astronomical Union 2019