YNAO OpenIR  > 大样本恒星演化研究组
A Study of Wolf-Rayet Stars Formed VIA Chemically Homogeneous Evolution
Cui,Zhe1; Wang,Zhaojun1; Zhu,Chunhua1; Lü,Guoliang1; Chen HL(陈海亮)2; Han ZW(韩占文)2
Source PublicationPublications of the Astronomical Society of the Pacific
2018-08
Volume130Issue:990
DOI10.1088/1538-3873/aac55e
Contribution Rank第2完成单位
Indexed BySCI
Keywordstars: evolution stars: rotation stars: Wolf–Rayet
Abstract

Abstract Using the stellar evolution code—Modules for Experiments in Stellar Astrophysics (MESA)—we investigate the evolution of massive stars with different rotational velocities and metallicities towards Wolf-Rayet stars. In our simulations, the initial rotating velocities are taken as 0, 250, 500, and 650 km s?1, and the metallicities equal to 0.02, 0.014, 0.008, 0.006, 0.004, and 0.002. We show our rapid rotation models in the HR diagram compared with the observations. We find that the rotational mixing is less efficient at high metallicity, and these stars become Wolf-Rayet (WR) stars when the helium in their center is ignited. However, rapid rotating massive stars at low metallicity can easily evolve into WR stars due to the rotation resulted in chemically homogeneous evolution. This can explain the origin of single WR stars in galaxy at low metallicity. In our models, the observed SMC WR stars are consistent with the single-star evolution models. However, at higher metallicities our single-star evolution models can only explain the luminous, hydrogen-rich WN stars and O stars (which are classified as WR stars previously).

Funding ProjectNational Natural Science Foundation of China[11473024] ; National Natural Science Foundation of China[11363005] ; National Natural Science Foundation of China[11763007] ; National Natural Science Foundation of China[11503008] ; National Natural Science Foundation of China[11365022] ; National Natural Science Foundation of China[11703081] ; National Natural Science Foundation of China[11521303] ; National Natural Science Foundation of China[11733008] ; XinJiang Science Fund for Distinguished Young Scholars[QN2016YX0049] ; National Natural Science Foundation of Yunnan Province[2017HC018] ; CAS light of West China Program
Funding OrganizationNational Natural Science Foundation of China[11473024, 11363005, 11763007, 11503008, 11365022, 11703081, 11521303, 11733008] ; XinJiang Science Fund for Distinguished Young Scholars[QN2016YX0049] ; National Natural Science Foundation of Yunnan Province[2017HC018] ; CAS light of West China Program
Language英语
Subject Area天文学 ; 恒星与银河系
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-6280
URL查看原文
WOS IDWOS:000436594900002
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordMASS-LOSS RATES ; LARGE-MAGELLANIC-CLOUD ; RADIATION-DRIVEN WINDS ; GALACTIC WN STARS ; STELLAR EVOLUTION ; SPECTRAL-ANALYSES ; ANGULAR-MOMENTUM ; METALLICITY DEPENDENCE ; ROTATING STARS ; SINGLE STAR
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/18650
Collection大样本恒星演化研究组
Corresponding AuthorCui,Zhe
Affiliation1.School of Physical Science and Technology, Xinjiang University, Urumqi, 830046, People's Republic of China
2.Yunnan Observatories, the Chinese Academy of Sciences, Kunming 650011, People's Republic of China
Recommended Citation
GB/T 7714
Cui,Zhe,Wang,Zhaojun,Zhu,Chunhua,et al. A Study of Wolf-Rayet Stars Formed VIA Chemically Homogeneous Evolution[J]. Publications of the Astronomical Society of the Pacific,2018,130(990).
APA Cui,Zhe,Wang,Zhaojun,Zhu,Chunhua,Lü,Guoliang,Chen HL,&Han ZW.(2018).A Study of Wolf-Rayet Stars Formed VIA Chemically Homogeneous Evolution.Publications of the Astronomical Society of the Pacific,130(990).
MLA Cui,Zhe,et al."A Study of Wolf-Rayet Stars Formed VIA Chemically Homogeneous Evolution".Publications of the Astronomical Society of the Pacific 130.990(2018).
Files in This Item:
File Name/Size DocType Version Access License
A Study of Wolf-Raye(8115KB)期刊论文出版稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Cui,Zhe]'s Articles
[Wang,Zhaojun]'s Articles
[Zhu,Chunhua]'s Articles
Baidu academic
Similar articles in Baidu academic
[Cui,Zhe]'s Articles
[Wang,Zhaojun]'s Articles
[Zhu,Chunhua]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Cui,Zhe]'s Articles
[Wang,Zhaojun]'s Articles
[Zhu,Chunhua]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: A Study of Wolf-Rayet Stars Formed VIA Chemically Homogeneous Evolution.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.