Four color light curves and period changes investigation of the contact binary BX Peg
文献类型：期刊论文
| 作者 | Li, Kai1,2 ; Hu, Shaoming1; Guo, Difu1; Jiang, Yunguo1; Gao, Dongyang1; Chen, Xu1
|
| 刊名 | NEW ASTRONOMY
 |
| 出版日期 | 2015-11 |
| 卷号 | 41页码:17-21 |
| 关键词 | Stars: binaries: close Stars: binaries: eclipsing Stars: individual (BX Peg) |
| ISSN号 | 1384-1076 |
| 通讯作者 | Li, K (reprint author), Shandong Univ, Inst Space Sci, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai 264209, Peoples R China. |
| 英文摘要 | We presented BVRcIc light curves of BX Peg obtained by the Weihai Observatory 1.0-m telescope of Shandong University. The W-D code was used to analyze the four color light curves, it is shown that BX Peg is a W-subtype shallow contact binary with a fill-out factor of f = 14.6%. The asymmetric light curves were explained by a dark spot on the less massive hot component. A total of 328 times of minimum light were used to study the orbital period variation of BX Peg. We found that the orbital period of BX Peg was continuous decrease with a rate of dp/dt = -2.07 x 10(-7) d yr(-1) superimposed on a cyclic oscillation with a period of 57.8 yr. The secular period decrease should be caused by the angular momentum loss via magnetic stellar wind. The cyclic modulation is very likely to be produced by the light travel time effect due to a tertiary companion. (C) 2015 Elsevier B.V. All rights reserved. |
| 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] | SYSTEM |
| 收录类别 | SCI |
| 原文出处 | http://www.sciencedirect.com/science/article/pii/S1384107615000524 |
| 语种 | 英语 |
| WOS记录号 | WOS:000368045200004 |
| 公开日期 | 2016-06-01 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/9398]  |
| 专题 | 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.Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai 264209, China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, China |
| 推荐引用方式 GB/T 7714 | Li, Kai,Hu, Shaoming,Guo, Difu,et al. Four color light curves and period changes investigation of the contact binary BX Peg[J]. NEW ASTRONOMY,2015,41:17-21. |
| APA | Li, Kai,Hu, Shaoming,Guo, Difu,Jiang, Yunguo,Gao, Dongyang,&Chen, Xu.(2015).Four color light curves and period changes investigation of the contact binary BX Peg.NEW ASTRONOMY,41,17-21. |
| MLA | Li, Kai,et al."Four color light curves and period changes investigation of the contact binary BX Peg".NEW ASTRONOMY 41(2015):17-21. |
入库方式： OAI收割
来源：云南天文台
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