Deep, low mass ratio overcontact binaries. II. IK Persei
文献类型：期刊论文
| 作者 | Zhu LY(朱俐颖)1,2,3 ; Qian SB(钱声帮)1,2; Soonthornthum, B4; Yang YG(杨远贵)1,2,3
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| 刊名 | ASTRONOMICAL JOURNAL
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| 出版日期 | 2005-06 |
| 卷号 | 129期号:6页码:2806-2814 |
| 关键词 | binaries : close binaries : eclipsing stars : evolution stars : individual (IK Persei) |
| ISSN号 | 0004-6256 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Zhu, LY (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China. |
| 英文摘要 | BV photometric light curves of the eclipsing binary IK Per were obtained during three nights in 2002 December. The photometric elements were computed using the Wilson-Devinney code. The results reveal that IK Per is an A-type overcontact binary system with a low mass ratio of q = 0.17 and a large degree of overcontact of 60%. The asymmetry of the light curves (i.e., the O'Connell effect) is explained by spot models. The observed long-term orbital period decrease [dP/dt = - (2.5 +/- 0.09) x 10(-7) days yr(-1)] is probably influenced by the presence of a third body in the system. The low mass ratio, high degree of overcontact, and secular orbital decrease all indicate that the situation of IK Per resembles those of FG Hya, GR Vir, and AW UMa. Because of the decrease of their orbital periods, the shrinking of the inner and outer critical Roche lobes will lead the common envelopes to overlap more, and finally the systems will evolve into single rapid-rotation stars. |
| 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] | LIMB-DARKENING COEFFICIENTS ; URSAE MAJORIS ; ORBITAL PERIOD ; LIGHT CURVES ; FG HYDRAE ; CE-LEONIS ; SYSTEM ; STARS ; MODEL |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/1538-3881/129/6/2806/ |
| 语种 | 英语 |
| WOS记录号 | WOS:000229472400025 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5779]  |
| 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, People's Republic of China 2.United Laboratory of Optical Astronomy, Chinese Academy of Sciences, 100012 Beijing, People's Republic of China 3.Graduate School of the Chinese Academy of Sciences, 100012 Beijing, People's Republic of China 4.Department of Physics, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand |
| 推荐引用方式 GB/T 7714 | Zhu LY,Qian SB,Soonthornthum, B,et al. Deep, low mass ratio overcontact binaries. II. IK Persei[J]. ASTRONOMICAL JOURNAL,2005,129(6):2806-2814. |
| APA | Zhu LY,Qian SB,Soonthornthum, B,&Yang YG.(2005).Deep, low mass ratio overcontact binaries. II. IK Persei.ASTRONOMICAL JOURNAL,129(6),2806-2814. |
| MLA | Zhu LY,et al."Deep, low mass ratio overcontact binaries. II. IK Persei".ASTRONOMICAL JOURNAL 129.6(2005):2806-2814. |
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来源：云南天文台
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