Formation of WNL Stars in the MW and LMC Based on the k - ω Model
文献类型:期刊论文
作者 | Si JJ(思霁娟)2,3,4,5![]() ![]() ![]() |
刊名 | ASTROPHYSICAL JOURNAL
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出版日期 | 2024-10-01 |
卷号 | 974期号:2 |
ISSN号 | 0004-637X |
DOI | 10.3847/1538-4357/ad6b13 |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | We adopt a set of second-order differential equations (k - omega model) to handle core convective overshooting in massive stars, simulate the evolution of nitrogen sequence Wolf-Rayet (WNL) stars with different metallicities and initial masses, both rotating and nonrotating models, and compare the results with the classical overshooting model. The results indicate that, under the same initial conditions, the k - omega model generally produces larger convective cores and wider overshooting regions, thereby increasing the mass ranges and extending the lifetimes of WNL stars, as well as the likelihood of forming WNL stars. The masses and lifetimes of WNL stars both increase with higher metallicities and initial masses. Under higher-metallicity conditions, the two overshooting schemes significantly differ in their impacts on the lifetimes of WNL stars, but are insignificant in the mass ranges of the WNL stars. Rotation may drive the formation of WNL stars in low-mass, metal-poor counterparts, with this effect being more pronounced in the overshooting model. The surface nitrogen of metal-rich WNL stars formed during the main-sequence phase is likely primarily from the CN cycle, while it may come from both the CN and NO cycles for relatively metal-poor counterparts. Our model can effectively explain the distribution of WNL stars in the Milky Way, but appears to have inadequacies in explaining the WNL stars in the LMC. |
学科主题 | 天文学 ; 恒星与银河系 |
URL标识 | 查看原文 |
出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
WOS关键词 | WOLF-RAYET STARS ; M-CIRCLE-DOT ; MASS-LOSS RATES ; LARGE-MAGELLANIC-CLOUD ; STELLAR EVOLUTION ; PRESUPERNOVA EVOLUTION ; CONVECTIVE BOUNDARIES ; O-STARS ; ROTATION ; MESA |
资助项目 | National Key R&D Program of China[2021YFA1600400/2021YFA1600402]; National Natural Science Foundation of China[12133011]; National Natural Science Foundation of China[12288102]; National Natural Science Foundation of China[12273104]; Natural Science Foundation of Yunnan Province[202401CF070041]; Yunnan Fundamental Research Projects[202401AS070045]; International Centre of Supernovae, Yunnan Key Laboratory[202302AN360001]; China Manned Space Project[CMS-CSST-2021-B06]; Yunnan Revitalization Talent Support Program Young Talent Project |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
WOS记录号 | WOS:001335980900001 |
出版者 | IOP Publishing Ltd |
资助机构 | National Key R&D Program of China[2021YFA1600400/2021YFA1600402] ; National Natural Science Foundation of China[12133011, 12288102, 12273104] ; Natural Science Foundation of Yunnan Province[202401CF070041] ; Yunnan Fundamental Research Projects[202401AS070045] ; International Centre of Supernovae, Yunnan Key Laboratory[202302AN360001] ; China Manned Space Project[CMS-CSST-2021-B06] ; Yunnan Revitalization Talent Support Program Young Talent Project |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/27647] ![]() |
专题 | 云南天文台_恒星物理研究组 云南天文台_中国科学院天体结构与演化重点实验室 |
作者单位 | 1.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, People's Republic of China 2.International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, People's Republic of China; 3.Key Laboratory for Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, People's Republic of China; 4.University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China; 5.Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, Kunming 650216, People's Republic of China; |
推荐引用方式 GB/T 7714 | Si JJ,Li Z,Li Y. Formation of WNL Stars in the MW and LMC Based on the k - ω Model[J]. ASTROPHYSICAL JOURNAL,2024,974(2). |
APA | 思霁娟,李志,&李焱.(2024).Formation of WNL Stars in the MW and LMC Based on the k - ω Model.ASTROPHYSICAL JOURNAL,974(2). |
MLA | 思霁娟,et al."Formation of WNL Stars in the MW and LMC Based on the k - ω Model".ASTROPHYSICAL JOURNAL 974.2(2024). |
入库方式: OAI收割
来源:云南天文台
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