YNAO OpenIR  > 中国科学院天体结构与演化重点实验室
The structure of critically-rotating accreting stars
Song, H. F.1,2,5; Wang, J. Z.1,3; Song, F.4,5; Wang, J. T.1
Source PublicationASTRONOMY & ASTROPHYSICS
2017-04-01
Volume600
DOI10.1051/0004-6361/201029784
Indexed BySCI ; EI
KeywordBinaries : Close Stars: Rotation Stars: Evolution Stars: Massive
Abstract

Context. The structure characteristics of the critically-rotating accretor in binaries are investigated in this paper, on the basis of the potential function including rotational and tidal distortions. 

Aims. Our aim is to investigate the structure of the accretor when the accreting star reaches the critical velocity. 

Methods. In this paper, we have implemented the prescription described by Kippenhahn & Thomas (1970, Proc. IAU Colloq., 4, 20) and Landin et al. (2009, A&A, 494, 209). 

Results. The traditional model merely included the hydrodynamical effect of rotation. When comparing this model with ours, we find that it is very necessary for the rapidly rotating accreting star to include the gravitational potentials from tides Psi(tide), and the distortions of the star resulting from rotation Psi(dis,rot).Furthermore, we find that the mean effective gravitational acceleration can be decreased in the distort model, and the star shifts towards low temperature and low luminosity. Rotation and tides can extend the convection zone below the surface, and reduce the convective core in the center of stars due to the Solberg-Hoiland criterion. Rotational distortions derived from Psi(dis,rot) can intensify the critical velocity whereas the tide force derived from Ilitide tends to reduce the critical velocity. Rapid rotation induced by mass transfer also causes the central temperature to decrease, and triggers efficient mixing which can significantly modify the H-profile.

Funding ProjectNational Natural Science Foundation of China[11463002] ; National Natural Science Foundation of China[11373020] ; Open Foundation of key Laboratory for the Structure and evolution of Celestial Objects, Chinese Academy of Science[OP201405] ; Open Foundation of key Laboratory for the Structure and evolution of Celestial Objects, Chinese Academy of Science[OP201404(B615015)] ; Science Foundation of Jimei University[C613030] ; Science and Technology Foundation of Guizhou Province[20]
Funding OrganizationNational Natural Science Foundation of China[11463002, 11373020] ; Open Foundation of key Laboratory for the Structure and evolution of Celestial Objects, Chinese Academy of Science[OP201405, OP201404(B615015)] ; Science Foundation of Jimei University[C613030] ; Science and Technology Foundation of Guizhou Province[20]
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherEDP SCIENCES S A
Publication Place17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE
ISSN0004-6361
URL查看原文
WOS IDWOS:000400754000085
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordTIDALLY DISTORTED STARS ; ANGULAR-MOMENTUM LOSS ; MAIN-SEQUENCE STARS ; STELLAR EVOLUTION ; MASSIVE STARS ; BINARY STARS ; PRESUPERNOVA EVOLUTION ; TURBULENCE ; SYSTEMS ; RATES
EI Accession Number20171403528762
EI KeywordsStars
EI Classification Number471.4Seawater, Tides and Waves - 641.1Thermodynamics - 641.3Mass Transfer - 657.2Extraterrestrial Physics and Stellar Phenomena - 931.1Mechanics
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/10068
Collection中国科学院天体结构与演化重点实验室
Corresponding AuthorSong, H. F.
Affiliation1.College of Physics, Guizhou University, Guiyang, 550025 Guizhou Province, PR China
2.Geneva Observatory, University of Geneva, 1290 Sauverny, Switzerland
3.School of Physics and Electronic Engineering, Kaili University, Kaili, 556011 Guizhou Province, PR China
4.College of Science, Jimei University, Xiamen city, 361021 Fujian Province, PR China
5.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650011
Recommended Citation
GB/T 7714
Song, H. F.,Wang, J. Z.,Song, F.,et al. The structure of critically-rotating accreting stars[J]. ASTRONOMY & ASTROPHYSICS,2017,600.
APA Song, H. F.,Wang, J. Z.,Song, F.,&Wang, J. T..(2017).The structure of critically-rotating accreting stars.ASTRONOMY & ASTROPHYSICS,600.
MLA Song, H. F.,et al."The structure of critically-rotating accreting stars".ASTRONOMY & ASTROPHYSICS 600(2017).
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