THE DYNAMICAL STATE AND LONG-TERM STABILITY OF HIP 102589
文献类型：期刊论文
| 作者 | Xia, Fang ; Fu, Yanning
|
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2015-11-20 |
| 卷号 | 814期号:1页码:64-69 |
| 关键词 | binaries: close methods: data analysis stars: fundamental parameters stars: individual (HIP 102589) stars: kinematics and dynamics |
| 英文摘要 | The dynamical state (component masses and kinematic parameters) of the triple star HIP 102589 is redetermined by fitting the simple double two-body model and the accurate three-body model, respectively, to observational data including those accumulated since the last orbit determination in 1992. Though the precision-weighted sum of squared residuals calculated from our results with both models are significantly smaller than the previous ones, only the result with the three-body model is statistically acceptable according to the goodness-of-fit test. The forward and backward long-term dynamical evolutions are numerically explored on the timescale of an estimated age of the components. It is found that the three-body system remains integrated and its hierarchical configuration keeps unchanged since the formation of the components, despite the fact that the instantaneous double two-body orbits vary significantly. This implies that the triple star may not be formed by a three-body encounter. Also, the possibility that the most massive component is itself a tightly bounded binary is discussed based on the redetermined mass and a stellar empirical mass-luminosity relation. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | 天体力学 |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | MULTIPLE STARS ; BINARY STARS ; CD-ROM ; SPECKLE INTERFEROMETRY ; WEAK HIERARCHY ; CATALOG ; ORBITS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000365310200064 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/15198]  |
| 专题 | 紫金山天文台_历算和天文参考系研究团组 |
| 作者单位 | Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xia, Fang,Fu, Yanning. THE DYNAMICAL STATE AND LONG-TERM STABILITY OF HIP 102589[J]. ASTROPHYSICAL JOURNAL,2015,814(1):64-69. |
| APA | Xia, Fang,&Fu, Yanning.(2015).THE DYNAMICAL STATE AND LONG-TERM STABILITY OF HIP 102589.ASTROPHYSICAL JOURNAL,814(1),64-69. |
| MLA | Xia, Fang,et al."THE DYNAMICAL STATE AND LONG-TERM STABILITY OF HIP 102589".ASTROPHYSICAL JOURNAL 814.1(2015):64-69. |
入库方式： OAI收割
来源：紫金山天文台
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