Physical properties and evolutionary status of the W-subtype contact binary V502 Oph with a stellar companion
文献类型：期刊论文
| 作者 | Zhou X(周肖)1,2,3 ; Qian SB(钱声帮)1,2,3; Huang Binghe1,2,3; Li H(李昊)1,3; Zhang J(张嘉)1,2
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| 刊名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
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| 出版日期 | 2016-12-01 |
| 卷号 | 68期号:6 |
| 关键词 | binaries: close binaries: eclipsing stars: individual: V502 Oph |
| ISSN号 | 0004-6264 |
| 产权排序 | 第1完成单位 |
| 通讯作者 | Zhou, X |
| 英文摘要 | Multi-color (B, V, R-c, I-c) CCD photometric light curves of the contact binary V502 Oph are analyzed using the Wilson-Devinney program. The solutions reveal that V502 Oph is a W-subtype contact (f = 35.3%) binary system. The temperature difference between its two components is 240 K and the more massive star has a lower surface temperature. A cool spot is added in our model to account for the light curves' asymmetry (O'Connell effect) and a third light is detected for the first time in the light curves' modeling. Combining the orbital inclination (i = 76 degrees.4) with the published mass function of V502 Oph, the absolute physical parameters of the two components are determined, which are M-1 = 0.46(+/- 0.02) M-circle dot, M-2 = 1.37(+/- 0.02) M-circle dot, R-1 = 0.94(+/-0.01) R-1, R-2 = 1.51(+/-0.01) R-circle dot, L-1 = 1.13(+/-0.02) L-circle dot, and L-2 = 2.49(+/-0.03) L-circle dot. The formation and the evolutionary status of V502 Oph are discussed. All photoelectric and CCD times of light minimum about V502 Oph are gathered and its orbital period variations are analyzed. The results show that the orbital period of V502 Oph is decreasing continuously at a rate of dP/dt = -1.69 x 10(-7) dyr(-1), which corresponds to a conservative mass transfer rate of dM(2)/ dt = -3.01 x 10(-8) M-circle dot yr(-1). The light-travel time effect is due to the presence of a close-in tertiary component with a period of P-3 = 18.7 yr and an amplitute of 0.00402 d. V502 Oph is an ideal target to test the formation and evolution theories of binary andmultiple systems in which the light curves, the O - C curve and spectroscopic observations are comprehensively researched. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | 天文学 |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | 1ST PHOTOMETRIC ANALYSIS ; VELOCITY CURVE ANALYSIS ; V 502 OPHIUCHI ; ECLIPSING BINARIES ; PERIOD VARIATION ; LIGHT CURVES ; PHOTOELECTRIC OBSERVATIONS ; ADDITIONAL COMPONENTS ; RADIAL-VELOCITY ; AI-PHE |
| 收录类别 | SCI |
| 原文出处 | https://academic.oup.com/pasj/article-abstract/68/6/102/2664385/Physical-properties-and-evolutionary-status-of-the?redirectedFrom=fulltext |
| 语种 | 英语 |
| WOS记录号 | WOS:000391295100014 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/9875]  |
| 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.Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650216, Peoples R China 2.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, POB 110, Kunming 650216, Peoples R China 3.Chinese Acad Sci, Grad Univ, Yuquan Rd 19,Sijingshang Block, Beijing 100049, Peoples R China 4.NARIT, Chiang Mai 50200, Thailand |
| 推荐引用方式 GB/T 7714 | Zhou X,Qian SB,Huang Binghe,et al. Physical properties and evolutionary status of the W-subtype contact binary V502 Oph with a stellar companion[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2016,68(6). |
| APA | Zhou X,Qian SB,Huang Binghe,Li H,&Zhang J.(2016).Physical properties and evolutionary status of the W-subtype contact binary V502 Oph with a stellar companion.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,68(6). |
| MLA | Zhou X,et al."Physical properties and evolutionary status of the W-subtype contact binary V502 Oph with a stellar companion".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 68.6(2016). |
入库方式： OAI收割
来源：云南天文台
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