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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
Source PublicationASTROPHYSICAL JOURNAL
2020-03-20
Volume892Issue:1Pages:27
DOI10.3847/1538-4357/ab7993
Contribution Rank第3完成单位
Indexed BySCI
KeywordClose binary stars
Abstract

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.

Funding ProjectNational 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]
Funding OrganizationNational Natural Science Foundation of China[11863003, 11463002] ; Swiss National Science Foundation[200020-172505] ; Science and Technology Planning Project in Guizhou Province[[2018]5781]
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星物理学 ; 恒星形成与演化
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000522443500001
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordPRESUPERNOVA EVOLUTION ; STELLAR EVOLUTION ; LOSS RATES ; LOW METALLICITY ; 1ST STARS ; SPIN-UP ; O-STARS ; MODELS ; PROGENITORS ; EXPLOSION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/23024
Collection恒星物理研究组
中国科学院天体结构与演化重点实验室
Corresponding AuthorSong HF(宋汉峰)
Affiliation1.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
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
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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