Complex Period Variations of the Neglected W UMa-type Binary System NY Lyrae
文献类型：期刊论文
| 作者 | Qian SB(钱声帮)1,2,3 ; Liu L(刘亮)1,2,3; Zhu LY(朱俐颖)1,2,3
|
| 刊名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA
 |
| 出版日期 | 2009 |
| 卷号 | 26期号:1页码:7-10 |
| 关键词 | stars: binaries: close stars: binaries: eclipsing stars: individual (NY Lyrae) |
| ISSN号 | 1323-3580 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Qian, SB (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, POB 110, Kunming 650011, Peoples R China. |
| 英文摘要 | Orbital-period variations of the neglected W UMa-type binary star, NY Lyr, were analyzed based on two newly determined eclipse times together with the others compiled from the literature. A cyclic oscillation with a period of 82.1 yr and an amplitude of 0.0247 d was discovered to be superimposed on a continuous period increase (dP/dt = +1.33 x 10(-7) d yr(-1)). After the long-term period increase and the large-amplitude cyclic oscillation were removed from the O-C diagram, the residuals suggest that there is another small-amplitude period oscillation (A(4) = 0.0053 d, P-4 = 19.4 years) in the orbital period changes. As in the cases of AH Cnc and AD Cnc, both the continuous period increase and the two cyclic period oscillations make NY Lyr an interesting system to study in the future. In order to understand the evolutionary state of the binary system, new photometric and spectroscopic observations and a careful investigation on those data are needed. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | THERMAL RELAXATION OSCILLATION ; MASS-RATIO ; CANCRI ; DEEP |
| 收录类别 | SCI |
| 原文出处 | http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=8837815&fileId=S1323358000004203 |
| 语种 | 英语 |
| WOS记录号 | WOS:000264762200002 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5829]  |
| 专题 | 云南天文台_双星与变星研究组 |
| 作者单位 | 1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, P.R. China 2.United Laboratory of Optical Astronomy, Chinese Academy of Sciences, 100012 Beijing, P.R. China 3.Graduate School of the CAS, Beijing, P.R. China |
| 推荐引用方式 GB/T 7714 | Qian SB,Liu L,Zhu LY. Complex Period Variations of the Neglected W UMa-type Binary System NY Lyrae[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA,2009,26(1):7-10. |
| APA | Qian SB,Liu L,&Zhu LY.(2009).Complex Period Variations of the Neglected W UMa-type Binary System NY Lyrae.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA,26(1),7-10. |
| MLA | Qian SB,et al."Complex Period Variations of the Neglected W UMa-type Binary System NY Lyrae".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA 26.1(2009):7-10. |
入库方式： OAI收割
来源：云南天文台
浏览0
下载0
收藏0
其他版本
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。