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Novae: An Important Source of Lithium in the Galaxy

文献类型：期刊论文

作者Gao, Jun3; Zhu, Chunhua3; Lu, Guoliang2; Yu, Jinlong1; Li, Lin3; Liu, Helei3; Guo, Sufen3
刊名ASTROPHYSICAL JOURNAL
出版日期2024-08-01
卷号971期号:1页码:4
ISSN号0004-637X
DOI10.3847/1538-4357/ad5a10
产权排序2
英文摘要The source of the Galactic lithium (Li) has long been a puzzle. With the discovery of Li in novae, extensive research has been conducted. However, there still exists a significant disparity between the observed abundance of Li in novae and the existing theoretical predictions. Using the Modules for Experiments in Stellar Astrophysics, we simulate the evolution of novae with element diffusion and appropriately increase the amount of 3He in the mixtures. Element diffusion enhances the transport efficiency between the nuclear reaction zone and the convective region on the surface of the white dwarf (WD) during nova eruptions, which results in more 7Be being transmitted to the WD surface and ultimately ejected. Compared to the previous predictions, the abundance of 7Be in novae simulated in our model significantly increases. The result is able to explain almost all observed novae. Using the method of population synthesis, we calculate Li yield in the Galaxy. We find that the Galactic occurrence rate of novae is about 130 yr-1, and about 110 M circle dot Li produced by nova eruption is ejected into the interstellar medium (ISM). About 73% of Li in the Galactic ISM originates from novae and approximately 15%-20% of the entire Galaxy. This means that novae are the important source of Li in the Galaxy.
WOS关键词EXPLOSIVE THERMONUCLEAR FORMATION ; GALACTIC LI-7 PRODUCERS ; PROBE WMAP OBSERVATIONS ; CLASSICAL NOVAE ; WHITE-DWARFS ; S-PROCESS ; CONVECTIVE BOUNDARIES ; CHEMICAL-COMPOSITION ; ELEMENT DIFFUSION ; NUCLEAR-REACTION
资助项目National Natural Science Foundation of China[12163005] ; National Natural Science Foundation of China[U2031204] ; National Natural Science Foundation of China[12373038] ; National Natural Science Foundation of China[12288102] ; National Natural Science Foundation of China[CMSCSST-2021-A10] ; Natural Science Foundation of Xinjiang[2022D01D85] ; Natural Science Foundation of Xinjiang[2022TSYCLJ0006] ; China Manned Space Project[CMSCSST-2021-A10]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001282097300001
出版者IOP Publishing Ltd
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Xinjiang ; China Manned Space Project
源URL[http://ir.xao.ac.cn/handle/45760611-7/6898]  
专题射电天文研究室_理论天体物理研究团组
通讯作者Zhu, Chunhua
作者单位1.Tarim Univ, Coll Mech & Elect Engn, Alar 843300, Peoples R China
2.Chinese Acad Sci, Xinjiang Observ, Urumqi 830011, Peoples R China
3.Xinjiang Univ, Sch Phys Sci & Technol, Urumqi 830046, Peoples R China
推荐引用方式
GB/T 7714		 Gao, Jun,Zhu, Chunhua,Lu, Guoliang,et al. Novae: An Important Source of Lithium in the Galaxy[J]. ASTROPHYSICAL JOURNAL,2024,971(1):4.
APA Gao, Jun.,Zhu, Chunhua.,Lu, Guoliang.,Yu, Jinlong.,Li, Lin.,...&Guo, Sufen.(2024).Novae: An Important Source of Lithium in the Galaxy.ASTROPHYSICAL JOURNAL,971(1),4.
MLA Gao, Jun,et al."Novae: An Important Source of Lithium in the Galaxy".ASTROPHYSICAL JOURNAL 971.1(2024):4.

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来源：新疆天文台

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