| Téléchargement | - Voir la version finale : The evolution of population III and extremely metal-poor binary stars (PDF, 2.5 Mio)
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| DOI | Trouver le DOI : https://doi.org/10.3847/1538-4357/acd936 |
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| Auteur | Rechercher : Tsai, Sung-HanIdentifiant ORCID : https://orcid.org/0000-0001-5466-8274; Rechercher : Chen, Ke-JungIdentifiant ORCID : https://orcid.org/0000-0002-4848-5508; Rechercher : Whalen, DanielIdentifiant ORCID : https://orcid.org/0000-0002-1463-267X; Rechercher : Ou, Po-ShengIdentifiant ORCID : https://orcid.org/0000-0003-1295-8235; Rechercher : Woods, Tyrone E.1Identifiant ORCID : https://orcid.org/0000-0003-1428-5775 |
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| Affiliation | - Conseil national de recherches du Canada. Herzberg en astronomie et en astrophysique
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| Bailleur de fonds | Rechercher : National Science and Technology Council; Rechercher : Academia Sinica |
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| Format | Texte, Article |
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| Sujet | close binary stars; stellar evolutionary models; stellar evolution; population III stars; stellar feedback |
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| Résumé | Numerical simulations have now shown that Population III (Pop III) stars can form in binaries and small clusters and that these stars can be in close proximity to each other. If so, they could be subject to binary interactions such as mass exchange that could profoundly alter their evolution, ionizing UV and Lyman–Werner photon emission and explosion yields, with important consequences for early cosmological reionization and chemical enrichment. Here we investigate the evolution of Pop III and extremely metal-poor binary stars with the MESA code. We find that interactions ranging from stable mass transfer to common envelope evolution can occur in these binaries for a wide range of mass ratios and initial separations. Mass transfer can nearly double UV photon yields in some of these binaries with respect to their individual stars by extending the life of the companion star, which in turn can enhance early cosmological reionization but also suppress the formation of later generations of primordial stars. Binary interactions can also have large effects on the nucleosynthetic yields of the stars by promoting or removing them into or out of mass ranges for specific SN types. We provide fits to total photon yields for the binaries in our study for use in cosmological simulations. |
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| Date de publication | 2023-07-05 |
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| Maison d’édition | American Astronomical Society |
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| Licence | |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | a3062acd-9e20-4de0-8a5d-e150af2c7cb3 |
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| Enregistrement créé | 2024-08-01 |
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| Enregistrement modifié | 2024-08-01 |
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