Photometric investigation of the K-type extremely shallow contact binary V1799 Orion
文献类型：期刊论文
| 作者 | Liu NP(刘念平)1,2,3 ; Qian SB(钱声帮)1,2,3; Liao WP(廖文萍)1,2; He JJ(何家佳)1,2; Zhao EG(赵二刚)1,2; Liu L(刘亮)1,2
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| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
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| 出版日期 | 2014-09 |
| 卷号 | 14期号:9页码:1157-1165 |
| ISSN号 | 1674-4527 |
| 关键词 | binaries: close binaries: eclipsing stars: individual (V1799 Ori) |
| 通讯作者 | Liu, NP (reprint author), Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China. |
| 产权排序 | 第一完成单位 |
| 英文摘要 | New multi-color light curves of the very short period K-type eclipsing binary V1799 On were obtained and analyzed with the Wilson-Devinney code. The photometric solutions reveal that the system is a W-type shallow-contact binary with a mass ratio of q = 1.335(+/- 0.005) and a degree of contact of about f = 3.5(+/- 1.1)%. In general, the results are in good agreement with what is reported by Samec. Dramatic manifestations of the O'Connell effect that appear in the light curves can be explained well by employing starspots on the binary surface, which confirms that the system is active at present. Several new times of light minimum were obtained. All the available times of light minimum were collected, along with the recalculated and newly obtained values. Applying a least-squares method to the constructed O - C diagram, a new ephemeris is derived for V1799 Ori. The orbital period is found to show a continuous weak increase at a rate of 1.8(+/- 0.6) x 10(-8) d yr(-1). The extremely shallow contact, together with the period increase, suggests that the binary may be at a critical stage predicted by thermal relaxation oscillation theory. |
| 学科主题 | Astronomy & Astrophysics |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | URSAE MAJORIS SYSTEMS ; STAR LIGHT ; CURVES ; EVOLUTION |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/article/10.1088/1674-4527/14/9/006/meta |
| 语种 | 英语 |
| WOS记录号 | WOS:000342259100006 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5897]  |
| 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.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China 3.University of Chinese Academy of Sciences, Beijing 100049, China |
| 推荐引用方式 GB/T 7714 | Liu NP,Qian SB,Liao WP,et al. Photometric investigation of the K-type extremely shallow contact binary V1799 Orion[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2014,14(9):1157-1165. |
| APA | Liu NP,Qian SB,Liao WP,He JJ,Zhao EG,&Liu L.(2014).Photometric investigation of the K-type extremely shallow contact binary V1799 Orion.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,14(9),1157-1165. |
| MLA | Liu NP,et al."Photometric investigation of the K-type extremely shallow contact binary V1799 Orion".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 14.9(2014):1157-1165. |
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来源：云南天文台
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