The rate of period change in DAV stars
Chen, Yan-Hui1,2,3; Ding, Cai-Yun1,2,3; Na, Wei-Wei3,4; Shu, Hong1,2,3; Chen, Yan-Hui(Chuxiong Normal Univ, Inst Astrophys, Chuxiong 675000, Peoples R China)
发表期刊RESEARCH IN ASTRONOMY AND ASTROPHYSICS
2017-07-01
卷号17期号:7
DOI10.1088/1674-4527/17/7/65
收录类别SCI
关键词Stars: Oscillations (Including Pulsations) Stars: Individual (G117-b15a And R548) White Dwarfs
摘要Grids of DAV star models are evolved by WDEC, taking the element diffusion effect into account. The grid parameters are hydrogen mass log (M-H/M*), helium mass log(M-He/M*), stellar mass M* and effective temperature T-eff for DAV stars. The core compositions are from white dwarf models evolved by MESA. Therefore, DAV star models evolved by WDEC have historically viable core compositions. Based on those DAV star models, we studied the rate of period change ((P) over dot(k)) for different values of H, He, M* and T-eff. The results are consistent with previous work. Two DAV stars G117-B15A and R548 have been observed for around 40 years. The rates of period change of two large-amplitude modes were obtained through the O - C method. We conducted an asteroseismological study on the two DAV stars and then obtained a best-fitting model for each star. Based on the two best-fitting models, the mode identifications (l, k) of the observed modes for G117-B15A and R548 are consistent with previous work. Both the observed modes and the observed. (P) over dots(s) can be fitted by calculated ones. The results indicate that our method of evolving DAV star models is feasible.
项目资助者National Natural Science Foundation of China(11563001, 11663001) ; Yunnan Applied Basic Research Project(2015FD044, 2015FD045) ; Open Research Program of the Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences(OP 201502, OP 201507) ; Research Fund of Chuxiong Normal University(XJGG1501, 14XJGG03)
语种英语
学科领域天文学
文章类型Article
ISSN1674-4527
URL查看原文
WOS记录号WOS:000416068400002
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]ZZ-CETI STARS ; WHITE-DWARF STARS ; BISYSTEM OSCILLATION-THEORY ; INSTABILITY STRIP ; ASTEROSEISMOLOGICAL CONSTRAINTS ; THERMAL-CONDUCTIVITIES ; DENSE MATTER ; AXION MASS ; G117-B15A ; EVOLUTION
引用统计
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/12282
专题中国科学院天体结构与演化重点实验室
通讯作者Chen, Yan-Hui(Chuxiong Normal Univ, Inst Astrophys, Chuxiong 675000, Peoples R China)
作者单位1.Institute of Astrophysics, Chuxiong Normal University, Chuxiong 675000, China
2.School of Physics and Electronical Science, Chuxiong Normal University, Chuxiong 675000, China
3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
4.School of Physics and Electronic Engineering, Yuxi Normal University, Yuxi 653100, China
推荐引用方式
GB/T 7714
Chen, Yan-Hui,Ding, Cai-Yun,Na, Wei-Wei,et al. The rate of period change in DAV stars[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2017,17(7).
APA Chen, Yan-Hui,Ding, Cai-Yun,Na, Wei-Wei,Shu, Hong,&Chen, Yan-Hui.(2017).The rate of period change in DAV stars.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,17(7).
MLA Chen, Yan-Hui,et al."The rate of period change in DAV stars".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 17.7(2017).
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
The rate of period c(435KB)期刊论文出版稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Chen, Yan-Hui]的文章
[Ding, Cai-Yun]的文章
[Na, Wei-Wei]的文章
百度学术
百度学术中相似的文章
[Chen, Yan-Hui]的文章
[Ding, Cai-Yun]的文章
[Na, Wei-Wei]的文章
必应学术
必应学术中相似的文章
[Chen, Yan-Hui]的文章
[Ding, Cai-Yun]的文章
[Na, Wei-Wei]的文章
相关权益政策
暂无数据
收藏/分享
文件名: The rate of period change in DAV stars.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。