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Cosmic abundances: The impact of stellar duplicity

A. Jorissen·S. Van Eck
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Abstract

The mass-transfer scenario links chemical peculiarities with stellar duplicity for an increasing number of stellar classes (classical and dwarf barium stars, subgiant and giant CH stars, S stars without technetium, yellow symbiotic stars, WIRRING stars, Abell-35-like nuclei of planetary nebulae...). Despite these successes, the mass-transfer scenario still faces several problems: What is the mass-transfer mode? Why orbital elements of dwarf barium stars do not fully match those of the classical barium stars? What is the origin of the few non-binary stars among dwarf barium stars? The paper reviews these open questions.

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A. Jorissen, S. Van Eck. 2004-10-27. Cosmic abundances: The impact of stellar duplicity. https://arxiv.org/abs/astro-ph/0410666

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