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 |
DOI | 10.1093/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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