Application of the screened Coulomb potential to fit the DA-type variable star HS 0507+0434B

doi:10.1093/mnras/staa1374

	Application of the screened Coulomb potential to fit the DA-type variable star HS 0507+0434B
	Chen, Y. H.1,2,3
发表期刊	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2020-06-01
卷号	495 期号:2 页码:2428-2435
DOI	10.1093/mnras/staa1374
收录类别	SCI
关键词	asteroseismology: individual (HS0507+0434B) white dwarfs
摘要	wdec is used to evolve grids of DA-variable (DAV) star models adopting the element diffusion scheme with pure and screened Coulomb potentials. The core compositions are thermonuclear burning results derived from mesa. mesa yields composition profiles that the version of WDEC used in this work could not accommodate (most notably, the presence of helium in the core of the model). According to the theory of rotational splitting, Fu and colleagues identified six triplets for the DAV star HS 0507 + 0434B based on 206 h of photometric data. The grids of DAV star models are used to fit the six reliable m = 0 modes. When adopting the screened Coulomb potential, a best-fitting model of log(M-He/M-)=-3.0, log(M-H/M-)=-6.1, T-eff = 11 790 K, M-* = 0.625M(circle dot), log g = 8.066 and sigma(RMS) = 2.08 s was obtained. Compared with adopting the pure Coulomb potential, the value of sRMS is improved by 34 per cent. This study may provide a new method for research into mode-trapping properties.
资助项目	National Natural Science Foundation of China[11803004] ; National Natural Science Foundation of China[11563001] ; National Natural Science Foundation of China[11333006]
项目资助者	National Natural Science Foundation of China[11803004, 11563001, 11333006]
语种	英语
学科领域	天文学 ; 恒星与银河系 ; 恒星物理学 ; 恒星形成与演化
文章类型	Article
出版者	OXFORD UNIV PRESS
出版地	GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN	0035-8711
URL	查看原文
WOS记录号	WOS:000543015800064
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	BISYSTEM OSCILLATION-THEORY ; ZZ CETI STARS ; THERMAL-CONDUCTIVITIES ; DENSE MATTER ; ASTEROSEISMOLOGY ; DIFFUSION ; EVOLUTION ; MODELS
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ynao.ac.cn/handle/114a53/23533
专题	中国科学院天体结构与演化重点实验室
通讯作者	Chen, Y. H.
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, PO Box 110, Kunming 650011, China
推荐引用方式 GB/T 7714	Chen, Y. H.. Application of the screened Coulomb potential to fit the DA-type variable star HS 0507+0434B[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2020,495(2):2428-2435.
APA	Chen, Y. H..(2020).Application of the screened Coulomb potential to fit the DA-type variable star HS 0507+0434B.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,495(2),2428-2435.
MLA	Chen, Y. H.."Application of the screened Coulomb potential to fit the DA-type variable star HS 0507+0434B".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 495.2(2020):2428-2435.

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
Application of the s（558KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览请求全文