| DETECTION OF A SECOND-GENERATION BINARY IN THE GLOBULAR CLUSTER omega CENTAURI | |
Li K(李凯)1,2,3 ; Qian SB(钱声帮)1,2,3; Leung, KC4
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| 发表期刊 | ASTROPHYSICAL JOURNAL
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| 2012-08-10 | |
| 卷号 | 755期号:1 |
| DOI | 10.1088/0004-637X/755/1/83 |
| 产权排序 | 第1完成单位 |
| 收录类别 | SCI |
| 关键词 | Binaries: Close Binaries: Eclipsing Globular Clusters: Individual (Omega Centauri) Stars: Early-type Stars: Individual (Nv364) |
| 摘要 | omega Centauri is the largest globular cluster in the Milky Way; it is composed of multiple stellar populations. Photometric solutions for the EA-type eclipsing binary NV364 in this cluster indicate that NV364 is a well-detached binary and that both of its components are early-type normal main-sequence stars. There is no evidence for mass transfer between the two components, which are at an early stage in their evolution. Using the luminosity-color relation with optical (BV) observations, we obtain the distance modulus of (m - M) = 14.05 for NV364, which confirms that it is a member of omega Centauri. The ages of the binary components and the first-generation stars in omega Centauri are about 1.19 Gyr and 16 Gyr, respectively. Thus, the binary components are much younger than the first-generation stars. There is therefore a strong basis for considering NV364 to be a second-generation binary in this globular cluster. |
| 资助项目 | Chinese Natural Science Foundation[11133007] ; Chinese Natural Science Foundation[10973037] ; Chinese Natural Science Foundation[10903026] ; [MSMT LH12175] ; [GACR P209/12/0217] ; [MUNI/A/0968/2009] |
| 项目资助者 | Chinese Natural Science Foundation [11133007, 10973037, 10903026, 11003040] ; West Light Foundation of the Chinese Academy of Sciences |
| 语种 | 英语 |
| 学科领域 | 天文学 ; 恒星与银河系 ; 恒星天文学 ; 恒星形成与演化 |
| 文章类型 | Article |
| 出版者 | IOP PUBLISHING LTD |
| 出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
| ISSN | 0004-637X |
| URL | 查看原文 |
| 归档日期 | 2012-08-06 |
| WOS记录号 | WOS:000306909500083 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | MAIN-SEQUENCE ; LIGHT CURVES ; CATALOG ; STARS ; EVOLUTION ; SYSTEMS ; ORIGIN ; GALAXY |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/5864 |
| 专题 | 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 |
| 通讯作者 | Li K(李凯) |
| 作者单位 | 1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, China 3.Graduate School of the CAS, Yuquan Road 19, Shijingshan Block, 100049 Beijing, China 4.Department of Physics and Astronomy, University of Nebraska, 1400 R Street Lincoln, NE 68588, USA |
| 第一作者单位 | 中国科学院云南天文台 |
| 通讯作者单位 | 中国科学院云南天文台 |
| 推荐引用方式 GB/T 7714 | Li K,Qian SB,Leung, KC. DETECTION OF A SECOND-GENERATION BINARY IN THE GLOBULAR CLUSTER omega CENTAURI[J]. ASTROPHYSICAL JOURNAL,2012,755(1). |
| APA | Li K,Qian SB,&Leung, KC.(2012).DETECTION OF A SECOND-GENERATION BINARY IN THE GLOBULAR CLUSTER omega CENTAURI.ASTROPHYSICAL JOURNAL,755(1). |
| MLA | Li K,et al."DETECTION OF A SECOND-GENERATION BINARY IN THE GLOBULAR CLUSTER omega CENTAURI".ASTROPHYSICAL JOURNAL 755.1(2012). |
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| DETECTION OF A SECON（443KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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