Progress on nuclear reaction rates affecting the stellar production of 26 Al
Progress on nuclear reaction rates affecting the stellar production of 26 Al
复制标题
影响26 Al恒星产生的核反应速率研究进展
DOI：
10.1088/1361-6471/ac9cf8
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Laird A
中科院分区：
文献类型：
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作者：
Laird A
放射性同位素26al是银河系和早期太阳系环境中核合成的关键观测物。为了正确地解释各种各样的天文和陨石数据，了解在相关恒星位置产生26 Al的核反应和这些位置的物理特性是至关重要的。它们的范围从低质量和中等质量渐近巨大分支星的风；到大质量和超大质量恒星，包括它们的沃尔夫-拉叶风和最终的核心坍缩超新星（CCSN）；新星的喷射物，发生在白矮星表面的爆炸，从伴星中吸积物质。几个反应影响这些天体中26 Al的产生，包括（但不限于）25 Mg (p, γ) 26 Al, 26 Al (p, γ) 27 Si和26 Al （n, p/α）。近年来，为了提高我们对这些关键反应的理解，进行了大量的实验工作。在这里，我们总结了26al研究的天体物理动机，回顾了它在不同恒星位置的产生，并及时评估了目前可用的核数据。我们还为恒星模型的核输入提供了建议，并提出了相关的、未来的实验工作。
The radioisotope 26 Al is a key observable for nucleosynthesis in the Galaxy and the environment of the early Solar System. To properly interpret the large variety of astronomical and meteoritic data, it is crucial to understand both the nuclear reactions involved in the production of 26 Al in the relevant stellar sites and the physics of such sites. These range from the winds of low-and intermediate-mass asymptotic giant branch stars; to massive and very massive stars, both their Wolf–Rayet winds and their final core-collapse supernovae (CCSN); and the ejecta from novae, the explosions that occur on the surface of a white dwarf accreting material from a stellar companion. Several reactions affect the production of 26 Al in these astrophysical objects, including (but not limited to) 25 Mg (p, γ) 26 Al, 26 Al (p, γ) 27 Si, and 26 Al (n, p/α). Extensive experimental effort has been spent during recent years to improve our understanding of such key reactions. Here we present a summary of the astrophysical motivation for the study of 26 Al, a review of its production in the different stellar sites, and a timely evaluation of the currently available nuclear data. We also provide recommendations for the nuclear input into stellar models and suggest relevant, future experimental work.