| High amplitude delta Scuti star BO Lyn with evidence of a late A-type companion in an elliptical orbit | |
Li LJ(李临甲)1,2,3 ; Qian SB(钱声帮)1,2,3,4; Zhang J(张嘉)1,2,3; Zhu LY(朱俐颖)1,2,3,4; Liao WP(廖文萍)1,2,3
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| 发表期刊 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
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| 2018 | |
| 卷号 | 18期号:1 |
| DOI | 10.1088/1674-4527/18/1/11 |
| 产权排序 | 第1完成单位 |
| 收录类别 | SCI |
| 关键词 | Techniques: Photometric Stars: Variables: Delta Scuti Stars: Individual (Bo Lyn) |
| 摘要 | We present 145 times of light maximum for high amplitude delta Scuti star BO Lyn based on several sky surveys (CRTS, DASCH, NSVS, OMC and SuperWASP) and our photometric observations. Combining with the data in literature, a total of 179 times of light maximum are used to analyze the O - C diagram of BO Lyn. We find that it can be described by an upward parabolic component and a periodic variation with a period of 34.5 +/- 0.1 yr. The latter could be caused by the light travel time effect as a result of an additional companion orbiting in a highly elliptical orbit (e = 0.64 +/- 0.03). Our study indicates that the companion's luminosity cannot be ignored, and it should be a late A-type main-sequence star. The long-term period change of BO Lyn is also detected, and its value, 1.52 +/- 0.26 x 10(-3) d Myr(-1), is consistent with evolutionary models. We suggest that more spectroscopic and photometric observations are needed in the future to confirm the nature of the BO Lyn system. |
| 资助项目 | NSF[AST-0407380] ; NSF[AST-0909073] ; NSF[AST-1313370] ; West Light Foundation of Chinese Academy of Sciences ; National Natural Science Foundation of China[11325315] ; National Natural Science Foundation of China[11573063] ; Yunnan Natural Science Foundation[2013FB084] ; Yunnan Natural Science Foundation[2014FB187 ; Yunnan Natural Science Foundation[2017FA001] ; Strategic Priority Research Program "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences([XDB09010202] |
| 项目资助者 | NSF[AST-0407380, AST-0909073, AST-1313370] ; West Light Foundation of Chinese Academy of Sciences ; National Natural Science Foundation of China[11325315, 11573063] ; Yunnan Natural Science Foundation[2013FB084, 2014FB187, 2017FA001] ; Strategic Priority Research Program "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences([XDB09010202] |
| 语种 | 英语 |
| 学科领域 | 天文学 ; 恒星与银河系 |
| 文章类型 | Article |
| 出版者 | NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES |
| 出版地 | 20A DATUN RD, CHAOYANG, BEIJING, 100012, PEOPLES R CHINA |
| ISSN | 1674-4527 |
| URL | 查看原文 |
| WOS记录号 | WOS:000428267100011 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | LONG-TERM VARIABILITY |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/12214 |
| 专题 | 双星与变星研究组 中国科学院天体结构与演化重点实验室 |
| 通讯作者 | Li LJ(李临甲) |
| 作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China 2.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China 3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, China 4.University of Chinese Academy of Sciences, Beijing 100049, China |
| 第一作者单位 | 中国科学院云南天文台 |
| 通讯作者单位 | 中国科学院云南天文台 |
| 推荐引用方式 GB/T 7714 | Li LJ,Qian SB,Zhang J,et al. High amplitude delta Scuti star BO Lyn with evidence of a late A-type companion in an elliptical orbit[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2018,18(1). |
| APA | Li LJ,Qian SB,Zhang J,Zhu LY,&Liao WP.(2018).High amplitude delta Scuti star BO Lyn with evidence of a late A-type companion in an elliptical orbit.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,18(1). |
| MLA | Li LJ,et al."High amplitude delta Scuti star BO Lyn with evidence of a late A-type companion in an elliptical orbit".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 18.1(2018). |
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| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| High amplitude δ Scu（629KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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