| 书目名称 | Explaining Lithium Enriched Red Giant Branch Stars | | 编辑 | Claudia Aguilera-Gómez | | 视频video | | | 概述 | Nominated as an outstanding thesis by Pontificia Universidad Católica de Chile.Presents a groundbreaking insight into the phenomena of lithium-rich red giant stars by proposing a new, mass-dependent c | | 丛书名称 | Springer Theses | | 图书封面 |  | | 描述 | .This thesis provides new insights into the seemingly anomalous ubiquity of lithium-rich red giant stars. The theory of stellar evolution, one of the most successful models of modern astrophysics, predicts that red giant stars should display negligible levels of lithium (Li) on their surfaces. However, Li-rich giants, defined as those showing more than three times the Li content of the Sun, are found everywhere astronomers look in apparent defiance of established theory..The author addresses this problem, analyzing the different possible explanations for such an anomaly, which include interaction with a binary companion, the production of Li in the interior of the star with its subsequent transport to stellar exteriors, and the stellar interaction with planets. The author focuses on this last possibility, where the Li enrichment may be due to the ingestion of planets or brown dwarfs as the stars in question grew in size while becoming giants. She shows that this process is indeed able to explain an important fraction of giants with Li levels above the three times solar threshold, but that some other mechanism is needed to explain the remaining fraction. While this is an important d | | 出版日期 | Book 2018 | | 关键词 | lithium red giant star; theory of stellar evolution; big bang nucleosynthesis lithium; lithium desert; m | | 版次 | 1 | | doi | https://doi.org/10.1007/978-3-030-02583-0 | | isbn_ebook | 978-3-030-02583-0Series ISSN 2190-5053 Series E-ISSN 2190-5061 | | issn_series | 2190-5053 | | copyright | Springer Nature Switzerland AG 2018 |
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发表于 2025-3-21 18:07:43
