YY Geminorum: A very late type close binary with possible magnetic stellar wind
文献类型：期刊论文
| 作者 | Qian SB(钱声帮)1,2 ; Liu, DL3; Tan, WL4; Soonthornthum, B5
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| 刊名 | ASTRONOMICAL JOURNAL
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| 出版日期 | 2002-08 |
| 卷号 | 124期号:2页码:1060-1063 |
| 关键词 | binaries : close stars : individual (YY Geminorum) stars : mass loss |
| ISSN号 | 0004-6256 |
| 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 | The O-C curve of the very late type close binary (dMle+dMle)YY Geminorum is formed and analyzed based on all available times of minimum light. It is found that the orbital period shows a secular decrease with rate dP/dt = -1.08x10(-8) days yr(-1). There is weak evidence indicating that a small-amplitude period oscillation is superposed on the period decrease. YY Gem is a well-detached eclipsing binary containing two very active components. The secular period decrease may suggest that the system is undergoing secular mass and angular momentum loss via a magnetic stellar wind. If the small-amplitude oscillation is real, it can be explained either by magnetic activity cycles or by the presence of a giant planet or brown dwarf. |
| 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] | ORBITAL PERIOD MODULATION ; STARS |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/1538-3881/124/2/1060/ |
| 语种 | 英语 |
| WOS记录号 | WOS:000176888900033 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5756]  |
| 专题 | 云南天文台_双星与变星研究组 |
| 作者单位 | 1.Yunnan Observatory, National Astronomical Observatories, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, China 2.United Laboratory of Optical Astronomy, Chinese Academy of Sciences 3.Nayong County Second Middle School, 553300 Nayong, Guizhou, China 4.Department of Physics, Guizhou Normal University, 550001 Guiyang, Guizhou, China 5.Department of Physics, Chiang Mai University, 50200 Chiang Mai, Thailand |
| 推荐引用方式 GB/T 7714 | Qian SB,Liu, DL,Tan, WL,et al. YY Geminorum: A very late type close binary with possible magnetic stellar wind[J]. ASTRONOMICAL JOURNAL,2002,124(2):1060-1063. |
| APA | Qian SB,Liu, DL,Tan, WL,&Soonthornthum, B.(2002).YY Geminorum: A very late type close binary with possible magnetic stellar wind.ASTRONOMICAL JOURNAL,124(2),1060-1063. |
| MLA | Qian SB,et al."YY Geminorum: A very late type close binary with possible magnetic stellar wind".ASTRONOMICAL JOURNAL 124.2(2002):1060-1063. |
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来源：云南天文台
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