Pulsations of the SX Phe Star BL Camelopardalis
文献类型：期刊论文
| 作者 | Feng, Guo Jie1,2 ; Yang, Tao Zhi1; Bai, Chun Hai1; Zhang, Yu1; Zong, Peng1,2; Esamdin, Ali1,2; Fu, Jian Ning3; Liu, Jin Zhong1; Niu, Hu Biao1,3
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| 刊名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
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| 出版日期 | 2019-06-01 |
| 卷号 | 131期号:1000页码:9 |
| 关键词 | stars: variables: delta Scuti |
| ISSN号 | 0004-6280 |
| DOI | 10.1088/1538-3873/ab0a1a |
| 通讯作者 | Esamdin, Ali() |
| 英文摘要 | We carried out photometric observations of the SX Phe star BL Cam in 2014, 2017, and 2018 using Nanshan 1-m telescope. In addition to the dominated frequency of 25.5790 (3) cd(-1) and its two harmonics, an independent frequency of 25.247 (2) cd(-1), which is a nonradial mode frequency, was detected from the data in 2014. A total of 123 new times of light maxima were determined from our light curves in the three years, which, together with that published in the literature, were used to analyze the O- C diagram. The change rate of the main period was derived as (1/P)(dP/dt) = -2.39 (8) x 10(-8) yr(-1), which is lower than that published in previous literature. A periodical change with a period of 14.01 (9) yr was found in the residuals of the O-C curve fitting. If it was caused by the light-time effect, BL Cam should be a binary system. The mass of the companion was restricted as low as that of a brown dwarf. No evidence of the triple system suggested by previous authors was shown in our analysis. |
| WOS关键词 | DELTA-SCUTI ; PHOENICIS STARS ; PERIOD CHANGES ; PHOTOMETRY ; GD-428 |
| 资助项目 | Nanshan 1 m telescope of Xinjiang Astronomical Observatory, light in China's Western Region[2015-XBQN-A-02] ; Nanshan 1 m telescope of Xinjiang Astronomical Observatory, light in China's Western Region[XBBS-2014-25.] ; National Natural Science Fundation of China[11873081] ; National Natural Science Fundation of China[11673003] ; National Natural Science Fundation of China[11833002] ; National Natural Science Fundation of China[11661161016] ; 2017 Heaven Lake Hundred-Talent Program of Xinjiang Uygur Autonomous Region of China |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000466271400001 |
| 出版者 | IOP PUBLISHING LTD |
| 资助机构 | Nanshan 1 m telescope of Xinjiang Astronomical Observatory, light in China's Western Region ; National Natural Science Fundation of China ; 2017 Heaven Lake Hundred-Talent Program of Xinjiang Uygur Autonomous Region of China |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/2622]  |
| 专题 | 新疆天文台_光学天文与技术应用研究室 光学天文与技术应用研究室_利用南山1米大视场望远镜（NOWT）观测数据的文章 |
| 通讯作者 | Esamdin, Ali |
| 作者单位 | 1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China |
| 推荐引用方式 GB/T 7714 | Feng, Guo Jie,Yang, Tao Zhi,Bai, Chun Hai,et al. Pulsations of the SX Phe Star BL Camelopardalis[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,2019,131(1000):9. |
| APA | Feng, Guo Jie.,Yang, Tao Zhi.,Bai, Chun Hai.,Zhang, Yu.,Zong, Peng.,...&Niu, Hu Biao.(2019).Pulsations of the SX Phe Star BL Camelopardalis.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,131(1000),9. |
| MLA | Feng, Guo Jie,et al."Pulsations of the SX Phe Star BL Camelopardalis".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC 131.1000(2019):9. |
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来源：新疆天文台
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