Orbital Period Changes and Their Explanations in Two Algol Binaries: WY Per and RW Leo
文献类型：期刊论文
| 作者 | Liao WP(廖文萍)1,2,3 ; Qian SB(钱声帮)1,2,3
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| 刊名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
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| 出版日期 | 2010 |
| 卷号 | 62期号:4页码:1109-1116 |
| 关键词 | stars: binaries: close stars: binaries: eclipsing stars: individuals (WY Persei, RW Leonis) stars: multiple |
| ISSN号 | 0004-6264 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Liao, WP (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, POB 110, Kunming 650011, Peoples R China. |
| 英文摘要 | WY Per and RW Leo are two Algol-type binaries. Based on our new CCD observations and the almost century-long historical record of the times of primary eclipses for WY Per and RW Leo, the orbital period changes and their explanations were reanalyzed and rediscussed in detail. It has been found that the orbital period of WY Per shows a cyclic oscillation with a period of P(3) = 71.5 yr and a semiamplitude of A(3) = 0(d).0739. The period variation can be interpreted by the light-travel time effect (LTTE) via the presence of a third body in an eccentric orbit with an eccentricity of e(3) similar or equal to 0.602 in the system. For RW Leo, its orbital period shows complex variations. Two cyclic variations (i.e., P(3) = 77.8 yr and A(3) = 0(d).033, and P(4) = 39.1 yr and A(4) = 0(d).022) were discovered. The cyclic variations of P(3) = 77.8 yr and A(3) = 0(d).033 can be attributed to the LTTE via the presence of a third body in an eccentric orbit with an eccentricity of e(3) similar or equal to 0.732. |
| 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] | ECLIPSING BINARIES ; CLOSE BINARIES ; RS CVN ; MODULATION ; SYSTEMS ; STARS |
| 收录类别 | SCI |
| 原文出处 | http://pasj.oxfordjournals.org/content/62/4/1109 |
| 语种 | 英语 |
| WOS记录号 | WOS:000282485100027 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5850]  |
| 专题 | 云南天文台_双星与变星研究组 云南天文台_中国科学院天体结构与演化重点实验室 |
| 作者单位 | 1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, P. R. China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences 3.Graduate School of the CAS, 100049, Beijing, P.R. China/Yuquan Road 19#, SijingShan Block, 100049, Beijing City, P. R. China |
| 推荐引用方式 GB/T 7714 | Liao WP,Qian SB. Orbital Period Changes and Their Explanations in Two Algol Binaries: WY Per and RW Leo[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2010,62(4):1109-1116. |
| APA | Liao WP,&Qian SB.(2010).Orbital Period Changes and Their Explanations in Two Algol Binaries: WY Per and RW Leo.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,62(4),1109-1116. |
| MLA | Liao WP,et al."Orbital Period Changes and Their Explanations in Two Algol Binaries: WY Per and RW Leo".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 62.4(2010):1109-1116. |
入库方式： OAI收割
来源：云南天文台
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