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Which evolutionary status does the Blue Large-Amplitude Pulsators stay at?
Wu T(吴涛)1,2,3; Li Y(李焱)1,2,3,4
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2018-08-01
卷号478期号:3页码:3871-3877
DOI10.1093/mnras/sty1347
产权排序第1完成单位
收录类别SCI
关键词Asteroseismology Stars: Evolution Stars: Interiors Stars: Oscillations Pulsars: Individual: Blaps Stars: Mass-loss
摘要

Asteroseismology is a very useful tool for exploring the stellar interiors and evolutionary status and for determining stellar fundamental parameters, such as stellar mass, radius, surface gravity, and the stellar mean density. In this work, we use it to preliminarily analyse the 14 new type pulsating stars: Blue Large-Amplitude Pulsators (BLAPs) which is observed by Optical Gravitational Lensing Experiment project, to roughly analyse their evolutionary status. We adopt the theory of single star evolution and artificially set the mass-loss rate of (M) over dot = -2 x 10(-4) M-circle dot yr(-1) and mass-loss beginning at the radius of R = 40 R-circle dot on red giant branch to generate a series of theoretical models. Based on these theoretical models and the corresponding observations, we find that those BLAP stars are more likely to be the core helium burning stars. Most of them are in the middle and late phase of the helium burning.

资助项目NSFC of China[11333006] ; NSFC of China[11521303] ; NSFC of China[11503076] ; NSFC of China[11503079] ; NSFC of China[11773064] ; Yunnan Applied Basic Research Projects[2017B008]
语种英语
学科领域天文学
学科门类理学 ; 理学::天文学
文章类型Article
出版者OXFORD UNIV PRESS
ISSN0035-8711
URL查看原文
WOS记录号WOS:000441282300075
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]Gravitational Lensing Experiment
引用统计
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/17871
专题恒星物理研究组
中国科学院天体结构与演化重点实验室
通讯作者Wu T(吴涛); Li Y(李焱)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming, 650216, P. R. China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming, 650216, P. R. China
3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, P. R. China
4.University of Chinese Academy of Sciences, Beijing 100049, P. R. China
推荐引用方式
GB/T 7714
Wu T,Li Y. Which evolutionary status does the Blue Large-Amplitude Pulsators stay at?[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,478(3):3871-3877.
APA Wu T,&Li Y.(2018).Which evolutionary status does the Blue Large-Amplitude Pulsators stay at?.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,478(3),3871-3877.
MLA Wu T,et al."Which evolutionary status does the Blue Large-Amplitude Pulsators stay at?".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 478.3(2018):3871-3877.
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