Long-term orbital period variations for EU hydrae
文献类型：期刊论文
| 作者 | Qian SB(钱声帮)1,2 ; Boonrucksar, S3
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| 刊名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
 |
| 出版日期 | 2003 |
| 卷号 | 55期号:2页码:499-502 |
| 关键词 | stars : activity stars : binaries : close stars : binaries : eclipsing stars : individual (EU Hydrae) stars : mass-loss |
| ISSN号 | 0004-6264 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Qian, SB (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China. |
| 英文摘要 | Long-term period variations of an Algol-type eclipsing binary star, EU Hydrae, are presented based on an analysis of its O - C curve. As in the cases of other Algols studied in recent papers by one of the authors (S.-B. Qian), an alternate period change has discovered to superimpose on a secular period decrease (dP/dt = -4.8 x 10(-8) d yr(-1)). By assuming that the alternate variation is cyclic, a period of 26.5 yr and an amplitude of 0.0104 d were determined. A long-term period decrease combined with a semi-detached configuration may indicate that EU Hya is undergoing a secular angular momentum loss. Three possible mechanisms are proposed to explain the alternate period change. |
| 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] | ANGULAR-MOMENTUM LOSS ; ALGOL-TYPE BINARIES ; POSSIBLE MASS ; CLOSE BINARIES ; PERSEI ; MODULATION ; DELPHINI ; CYGNI |
| 收录类别 | SCI |
| 原文出处 | http://pasj.oxfordjournals.org/content/55/2/499 |
| 语种 | 英语 |
| WOS记录号 | WOS:000182614100018 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5767]  |
| 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 (ULOAC), 100012 Beijing, P. R. China 3.Astronomy Research Unit, Department of Physics, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand |
| 推荐引用方式 GB/T 7714 | Qian SB,Boonrucksar, S. Long-term orbital period variations for EU hydrae[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2003,55(2):499-502. |
| APA | Qian SB,&Boonrucksar, S.(2003).Long-term orbital period variations for EU hydrae.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,55(2),499-502. |
| MLA | Qian SB,et al."Long-term orbital period variations for EU hydrae".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 55.2(2003):499-502. |
入库方式： OAI收割
来源：云南天文台
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