Orbital period investigation of some short-period sdB-type eclipsing binaries
文献类型：期刊论文
| 作者 | Qian SB(钱声帮)1,2 ; Zhu LY(朱俐颖)1,2; Liu L(刘亮)1,2; Dai ZB(戴智斌)1,2; He JJ(何家佳)1,2; Liao WP(廖文萍)1,2; Zhao EG(赵二刚)1,2; Zola, S3,4; Kuligowska, E3; Winiarski, M4
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| 刊名 | ASTROPHYSICS AND SPACE SCIENCE
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| 出版日期 | 2010-10 |
| 卷号 | 329期号:1-2页码:113-117 |
| 关键词 | Stars: binaries: close Stars: binaries: eclipsing Stars: subdwarfs Stars: low-mass, brown dwarfs Stars: mass-loss |
| ISSN号 | 0004-640X |
| 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 | To understand the properties of orbital period changes of four short period sdB-type eclipsing binaries, HW Vir, HS 0705 + 6700, HS 2231 + 2441, and NSVS 14256825, we have monitored them photometrically since 2006. Apart from HW Vir, it is found that the O-C diagrams of HS 0705 + 6700 and HS 2231 + 2441 can also be described by a cyclic variation superimposed on a downward parabolic curve, indicating a long-term period decrease in the two systems. Therefore, of the four binary systems, long-term period variations have been detected for three ones that can be explained by magnetic braking of the fully convective component stars. This may drive these systems to evolution into normal cataclysmic variables. As for the cyclic period variations observed in the four systems, the light-travel time effect via the presence of a tertiary component is the most possible mechanism to interpret the periodic change, which reveals the presence of extremely low-mass objects (e.g., brown dwarf stars and huge planets) in this kind of binaries. |
| 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] | HW VIR-TYPE ; CATACLYSMIC VARIABLES ; STELLAR EVOLUTION ; MAGNETIC BRAKING ; STARS ; COMPANION |
| 收录类别 | SCI |
| 原文出处 | http://link.springer.com/article/10.1007%2Fs10509-010-0290-5 |
| 语种 | 英语 |
| WOS记录号 | WOS:000282823200019 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5836]  |
| 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.Laboratory for the Structure and Evolution of Celestial Bodies, Chinese Academy of Sciences, P.O. Box 110, 650011, Kunming, P.R. China 3.Astronomical Observatory, Jagiellonian University, ul. Orla 171, 30-244, Krakow, Poland 4.Mt. Suhora Observatory, Cracow Pedagogical University, ul. Podchorazych 2, 30-084, Krakow, Poland |
| 推荐引用方式 GB/T 7714 | Qian SB,Zhu LY,Liu L,et al. Orbital period investigation of some short-period sdB-type eclipsing binaries[J]. ASTROPHYSICS AND SPACE SCIENCE,2010,329(1-2):113-117. |
| APA | Qian SB.,Zhu LY.,Liu L.,Dai ZB.,He JJ.,...&Winiarski, M.(2010).Orbital period investigation of some short-period sdB-type eclipsing binaries.ASTROPHYSICS AND SPACE SCIENCE,329(1-2),113-117. |
| MLA | Qian SB,et al."Orbital period investigation of some short-period sdB-type eclipsing binaries".ASTROPHYSICS AND SPACE SCIENCE 329.1-2(2010):113-117. |
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来源：云南天文台
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