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The Gaia-ESO Survey: properties of newly discovered Li-rich giants

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Carmela Lardo, Joao André Gomes de Sá e Sousa, Fadi Atef Bayoud
2018

Abstract

Aims. We report 20 new lithium-rich giants discovered within the Gaia-ESO Survey, including the first Li-rich giant with an evolutionary stage confirmed by CoRoT (Convection, Rotation and planetary Transits) data. We present a detailed overview of the properties of these 20 stars.

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https://infoscience.epfl.ch/entities/publication/adef774e-1f4c-4e10-a782-9eb57aadb4bb

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The red-giant branch (RGB), sometimes called the first giant branch, is the portion of the giant branch before helium ignition occurs in the course of stellar evolution. It is a stage that follows the main sequence for low- to intermediate-mass stars. Red-giant-branch stars have an inert helium core surrounded by a shell of hydrogen fusing via the CNO cycle. They are K- and M-class stars much larger and more luminous than main-sequence stars of the same temperature.

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