Identification of a deep contact binary in the field of the globular cluster 47 Tuc
文献类型：期刊论文
| 作者 | Liu L(刘亮)1,2 ; Qian SB(钱声帮)1,2; Lajus, EF3,4
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| 刊名 | NEW ASTRONOMY
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| 出版日期 | 2014-01 |
| 卷号 | 26页码:116-120 |
| 关键词 | Stars: binaries: eclipsing Stars: individual (V95 47 Tuc) |
| ISSN号 | 1384-1076 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Liu, L (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, POB 110, Kunming 650011, Peoples R China. |
| 英文摘要 | Three light curves of the eclipsing binary V95-47 Tuc were obtained in serval nights from December, 2010 to November, 2011. By analyzing the light curves with the 2010 version of the W-D code, the mass-ratio and the fill-out factor of V95 are determined as 0.164 and 53.8%, respectively. It is sure that this contact binary is a foreground object of the globular cluster 47 Tuc. By comparing to the Dartmouth model isochrones, the masses and the radii of the component stars are estimated, as well as the age and the distance. They are, M-1 = 0.97M(circle dot), M-2 = 0.16M(circle dot), R-1 = 1.05R(circle dot), R-2 = 0.49R(circle dot), Age = 7.0 Gyr and Dist = 1570 pc. The cool spots model is introduced in the BV-band photometric solutions because of the observed O'Connell effect. We compare the two modeling cool spots in size, temperature and position, thinking that they could be the same one. It can be explained as that a cool spot, which is on the surface of the more massive component, shifted 126 degrees along the latitude line from west to east in a year. This phenomenon may be called as starspot migration. (C) 2013 Published by Elsevier B.V. |
| 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] | VELOCITY CURVES ; VARIABLE-STARS ; LIGHT |
| 收录类别 | SCI |
| 原文出处 | http://www.sciencedirect.com/science/article/pii/S138410761300081X |
| 语种 | 英语 |
| WOS记录号 | WOS:000325510600014 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5910]  |
| 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, PR China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650011 Kunming, PR China 3.Facultad de Ciencias Astronómicasy Geofísicas, Universidad Nacional de La Plata, 1900 La Plata, Buenos Aires, Argentina 4.Instituto de Astrofśica de La Plata (CCT La Plata-CONICET, UNLP), Argentina |
| 推荐引用方式 GB/T 7714 | Liu L,Qian SB,Lajus, EF. Identification of a deep contact binary in the field of the globular cluster 47 Tuc[J]. NEW ASTRONOMY,2014,26:116-120. |
| APA | Liu L,Qian SB,&Lajus, EF.(2014).Identification of a deep contact binary in the field of the globular cluster 47 Tuc.NEW ASTRONOMY,26,116-120. |
| MLA | Liu L,et al."Identification of a deep contact binary in the field of the globular cluster 47 Tuc".NEW ASTRONOMY 26(2014):116-120. |
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来源：云南天文台
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