The Structure and Evolution of Massive Rotating Single and Binary Population III Stars | |
Song HF(宋汉峰)1,2,3; Meynet, Georges2; Li Z(栗志)1,3; Peng, Weiguo1; Zhang, Ruiyu4; Zhan, Qiong1 | |
刊名 | ASTROPHYSICAL JOURNAL |
2020-03-20 | |
卷号 | 892期号:1页码:27 |
关键词 | Close binary stars |
ISSN号 | 0004-637X |
DOI | 10.3847/1538-4357/ab7993 |
产权排序 | 第3完成单位 |
文献子类 | Article |
英文摘要 | The aim of this paper is to investigate the effect of rotation on the single and binary evolution for Population III stars. A small grid for a massive Population III star of 130 M is constructed, and various initial conditions are adjusted to explore the evolution. For comparison, we present the evolution of the models with the metallicity in the Small Magellanic Cloud and analyze the characteristic feature of chemically homogeneous evolution. It is found that Population III stars attain the equilibrium velocities later during synchronization owing to a smaller radius. The equilibrium velocity has been expressed as various timescales. There appears to be a deep dredge-up at hydrogen exhaustion for single Population III stars. It not only increases the helium core but also exchanges chemical elements between the He core and the H-burning shell. This will give rise to a significant amount of nitrogen and neon. Rotational mixing can reduce the specific entropy in the envelope and increase the specific entropy in the core owing to a change of mean molecular weight. Stellar compactness and the luminosity available for stellar expansion are decreased by rotational mixing because of the increase of helium in the envelopes. Mass loss induced by strong stellar winds and Roche lobe overflow can extinguish the hydrogen-burning shell and remove convective envelopes. Therefore, this process does not favor the dredge-up and production of primary nitrogen. The chemical structure for two components in binarities is significantly modified because Roche lobe overflow has an impact on convective cores. |
学科主题 | 天文学 ; 恒星与银河系 ; 恒星物理学 ; 恒星形成与演化 |
URL标识 | 查看原文 |
出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
资助项目 | National Natural Science Foundation of China[11863003] ; National Natural Science Foundation of China[11463002] ; Swiss National Science Foundation[200020-172505] ; Science and Technology Planning Project in Guizhou Province[[2018]5781] |
WOS关键词 | PRESUPERNOVA EVOLUTION ; STELLAR EVOLUTION ; LOSS RATES ; LOW METALLICITY ; 1ST STARS ; SPIN-UP ; O-STARS ; MODELS ; PROGENITORS ; EXPLOSION |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000522443500001 |
资助机构 | National Natural Science Foundation of China[11863003, 11463002] ; Swiss National Science Foundation[200020-172505] ; Science and Technology Planning Project in Guizhou Province[[2018]5781] |
内容类型 | 期刊论文 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/23023] |
专题 | 云南天文台_恒星物理研究组 |
通讯作者 | Song HF(宋汉峰) |
作者单位 | 1.College of Physics, Guizhou University, Guiyang City, Guizhou Province, 550025, People's Republic of China 2.Geneva Observatory, Geneva University, CH-1290 Sauverny, Switzerland 3.Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming 650011, People's Republic of China 4.Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai city, 200030, People's Republic of China |
推荐引用方式 GB/T 7714 | Song HF,Meynet, Georges,Li Z,et al. The Structure and Evolution of Massive Rotating Single and Binary Population III Stars[J]. ASTROPHYSICAL JOURNAL,2020,892(1):27. |
APA | Song HF,Meynet, Georges,Li Z,Peng, Weiguo,Zhang, Ruiyu,&Zhan, Qiong.(2020).The Structure and Evolution of Massive Rotating Single and Binary Population III Stars.ASTROPHYSICAL JOURNAL,892(1),27. |
MLA | Song HF,et al."The Structure and Evolution of Massive Rotating Single and Binary Population III Stars".ASTROPHYSICAL JOURNAL 892.1(2020):27. |
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