YNAO OpenIR  > 双星与变星研究组
Two particular EA-type binaries in the globular cluster omega Centauri
Li K(李凯)1,2,3; Qian SB(钱声帮)1,2
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
2013-07
Volume13Issue:7Pages:827-834
DOI10.1088/1674-4527/13/7/006
Contribution Rank第1完成单位
Indexed BySCI
Keywordgalaxies: globular clusters: individual (omega Centauri) stars: binaries: close stars: binaries: eclipsing stars: blue stragglers stars: individual (V211, NV358)
Abstract

We analyzed the B and V light curves of two EA-type binaries V211 and NV358 for the first time using the Wilson-Devinney code. Our analysis shows that V211 is a typical Algol-type binary and NV358 is a well detached binary system. As the two binaries are definite members of omega Centauri due to their proper motion, we estimated their physical parameters, obtaining M-1 = 1.13 +/- 0.03 M-circle dot, R-1 = 0.98 +/- 0.01 R-circle dot, M-2 = 0.33 +/- 0.01 M-circle dot and R-2 = 0.92 +/- 0.01 R-circle dot for V211; M-1 = 1.30 +/- 0.05 M-circle dot, R-1 = 1.03 +/- 0.01 R-circle dot, M-2 = 0.58 +/- 0.02 M-circle dot and R-2 = 0.78 +/- 0.01 R-circle dot for NV358. On the color-magnitude diagram of omega Centauri, V211 is located in the faint blue straggler region and its primary component is more massive than a star at the main-sequence turnoff. Therefore, V211 is a blue straggler and was formed by mass transfer from the secondary component to the primary. The age of NV358 is less than 1.93 Gyr, indicating that it is much younger than the first generation of stars in omega Centauri. Like NV364 in omega Centauri, NV358 should be a second-generation binary.

Funding ProjectNational Natural Science Foundation of China[11203066] ; National Natural Science Foundation of China[11133007] ; National Natural Science Foundation of China[11103074] ; National Natural Science Foundation of China[10973037] ; National Natural Science Foundation of China[10903026] ; West Light Foundation of the Chinese Academy of Sciences
Funding OrganizationNational Natural Science Foundation of China[11203066, 11133007, 11103074, 10973037, 10903026] ; West Light Foundation of the Chinese Academy of Sciences
Language英语
Subject Area天文学 ; 恒星与银河系
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherNATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
Publication Place20A DATUN RD, CHAOYANG, BEIJING, 100012, PEOPLES R CHINA
ISSN1674-4527
URL查看原文
WOS IDWOS:000320859600006
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordBLUE STRAGGLER STARS ; AGES EXPERIMENT ; RADIAL-DISTRIBUTION ; MAIN-SEQUENCE ; VARIABLE-STARS ; LIGHT CURVES ; 47 TUC ; POPULATION ; CATALOG ; PHOTOMETRY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/5885
Collection双星与变星研究组
中国科学院天体结构与演化重点实验室
Corresponding AuthorLi K(李凯)
Affiliation1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
3.University of Chinese Academy of Sciences, Beijing 100049, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Li K,Qian SB. Two particular EA-type binaries in the globular cluster omega Centauri[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2013,13(7):827-834.
APA Li K,&Qian SB.(2013).Two particular EA-type binaries in the globular cluster omega Centauri.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,13(7),827-834.
MLA Li K,et al."Two particular EA-type binaries in the globular cluster omega Centauri".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 13.7(2013):827-834.
Files in This Item:
File Name/Size DocType Version Access License
Two particular EA-ty(382KB)期刊论文出版稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Li K(李凯)]'s Articles
[Qian SB(钱声帮)]'s Articles
Baidu academic
Similar articles in Baidu academic
[Li K(李凯)]'s Articles
[Qian SB(钱声帮)]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Li K(李凯)]'s Articles
[Qian SB(钱声帮)]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Two particular EA-type binaries in the globular cluster ω Centauri.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.