Two lithium-rich supergiants

Astronomy and Astrophysics – Astronomy

Scientific paper

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Abundance, Late Stars, Lithium, Metallic Stars, Supergiant Stars, Resonance Lines, Spectral Line Width, Stellar Spectra

Scientific paper

Two extraordinary stars of type F and G are identified. These stars, HR
7008 and HD 174104, have strong lithium doublets. A detailed analysis
shows each to have the cosmic abundance of lithium. It is argued that
they are unmixed stars on the redward approach to the first giant
branch.

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