Orbital period studies of two Algol-type eclipsing binary systems: TY pegasi and X Trianguli
文献类型：期刊论文
| 作者 | Qian SB(钱声帮)1,2,3
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| 刊名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
 |
| 出版日期 | 2002-06 |
| 卷号 | 114期号:796页码:650-655 |
| ISSN号 | 0004-6280 |
| 通讯作者 | Qian, SB (reprint author), Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650011, Peoples R China. |
| 产权排序 | 第一完成单位 |
| 英文摘要 | O-C curves of two EA-type eclipsing binaries, TY Peg and X Tri, are formed and studied in detail based on all available times of light minimum. For TY Peg, it was discovered that the general trend of the O-C curve showed a downward parabolic variation, which indicates a secular period decrease with rate at dP/dt = -1.6 x 10(-6) days yr(-1). When the secular decrease is removed from the curve, the residuals can be described by several linear ephemerides, suggesting several sudden period jumps. For the other one, X Tri, it is found that the general O-C trend also indicates a secular period decrease (dP/dt = -1.42 x 10(-7) days yr(-1)), and several irregular period jumps are found to superpose on the long-time period decrease. This kind of period change, irregular sudden jumps superposed on secular decrease, is typical for many other Algol-type binary systems such as TU Her, UU And, Z Per, Y Psc, BO Mon, FH Ori, RT Per, and TX UMa. The period changes of these systems may be caused by orbital angular momentum loss via variable magnetic coupling and gravity coupling between the components. |
| 学科主题 | Astronomy & Astrophysics |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | ANGULAR-MOMENTUM LOSS ; POSSIBLE MASS ; PERSEI ; DELPHINI |
| 收录类别 | SCI |
| 原文出处 | http://www.jstor.org/stable/10.1086/341681 |
| 语种 | 英语 |
| WOS记录号 | WOS:000175593600009 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5759]  |
| 专题 | 云南天文台_双星与变星研究组 |
| 作者单位 | 1.Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, People’s Republic of China 2.National Astronomical Observatories, Chinese Academy of Sciences (NAOCAS) 3.United Laboratory of Optical Astronomy, Chinese Academy of Sciences (ULOAC) |
| 推荐引用方式 GB/T 7714 | Qian SB. Orbital period studies of two Algol-type eclipsing binary systems: TY pegasi and X Trianguli[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,2002,114(796):650-655. |
| APA | Qian SB.(2002).Orbital period studies of two Algol-type eclipsing binary systems: TY pegasi and X Trianguli.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,114(796),650-655. |
| MLA | Qian SB."Orbital period studies of two Algol-type eclipsing binary systems: TY pegasi and X Trianguli".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC 114.796(2002):650-655. |
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来源：云南天文台
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