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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
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2018-08-01
卷号478期号:3页码:3871-3877
关键词Asteroseismology Stars: Evolution Stars: Interiors Stars: Oscillations Pulsars: Individual: Blaps Stars: Mass-loss
ISSN号0035-8711
DOI10.1093/mnras/sty1347
产权排序第1完成单位
文献子类Article
英文摘要

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.

学科主题天文学
URL标识查看原文
出版地GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
资助项目NSFC of China[11333006] ; NSFC of China[11503076] ; NSFC of China[11503079] ; NSFC of China[11773064] ; NSFC of China[11521303] ; Yunnan Applied Basic Research Projects[2017B008]
WOS关键词Gravitational Lensing Experiment
WOS研究方向Astronomy & Astrophysics
语种英语
出版者OXFORD UNIV PRESS
WOS记录号WOS:000441282300075
资助机构NSFC of China[11333006, 11503076, 11503079, 11773064, 11521303] ; Yunnan Applied Basic Research Projects[2017B008]
内容类型期刊论文
源URL[http://ir.ynao.ac.cn/handle/114a53/17870]  
专题云南天文台_恒星物理研究组
云南天文台_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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