The first photometric and orbital period investigation of an extremely low mass ratio contact binary with a sudden period change TYC 4002-2628-1
文献类型：期刊论文
| 作者 | Guo, Di-Fu4; Li, Kai4; Liu, Fen4; Li, Huai-Zhen3; Xia, Qi-Qi4; Gao, Xing2; Gao, Xiang4; Chen, Xu4; Gao, Dong-Yang4; Sun, Guo-You1 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2022-10-21 |
| 卷号 | 517期号:2页码:1928-1936 |
| ISSN号 | 0035-8711 |
| 关键词 | binaries : close binaries : eclipsing stars: evolution stars: individual : TYC 4002-2628-1 |
| DOI | 10.1093/mnras/stac2811 |
| 通讯作者 | Guo, Di-Fu(difu@sdu.edu.cn) ; Li, Kai(kaili@sdu.edu.cn) |
| 英文摘要 | Photometric observations for the totally eclipsing binary system TYC 4002-2628-1, were obtained between November 2020 and November 2021. To determine the stellar atmospheric parameters, a spectral image was taken with the 2.16 m telescope at National Astronomical Observatory of China (NAOC). TYC 4002-2628-1 is a low-amplitude (about 0.15 mag for V band) short-period (0.3670495 d) contact eclipsing binary with a total secondary eclipse. Intrinsic light curve variations and the reversal of the O'Connell effect are detected in the light curves, which may be due to spot activity. Based on the photometric solutions derived from the multiband time series light curves, TYC 4002-2628-1 is an extremely low-mass ratio contact binary with a mass ratio of q similar to 0.0482 and a fill-out factor of f similar to 5 per cent. By analysing the O - C variations, we find that its orbital period remains unchanged when BJD < 2458321. Then the orbital period changed suddenly around BJD 2458743 and has an increasing rate of dP/di = 1.62 x 10(-5) d.yr(-1) = 140 s.century(-1). If confirmed, TYC 4002-2628-1 would be the contact binary with the highest orbital period increasing rate so far. By investigating the ratio of orbital angular momentum to the spin angular momentum (J(orb)/J(spin )< 3), the instability mass ratio (q(inst)/q = 1.84) and the instability separation (A(inst)/A = 1.35), TYC 4002-2628-1 can be regarded as a merger candidate. |
| WOS关键词 | PHYSICAL PARAMETERS ; LIGHT CURVES ; AH-CANCRI ; SYSTEMS ; STABILITY ; ACCURACY ; STARS ; DEEP |
| 资助项目 | National Natural Science Foundation of China (NSFC)[12063005] ; National Natural Science Foundation of China (NSFC)[12273018] ; National Natural Science Foundation of China (NSFC)[U1931103] ; Qilu Young Researcher Project of Shandong University ; Chinese Academy of Sciences Interdisciplinary Innovation Team ; Cultivation Project for LAMOST Scientific Payoff and Research Achievement of CAMS-CAS ; Program for Innovative Research Team (in Science and Technology) in the University of Yunnan Province (IRTSTYN) ; Yunnan Local Colleges Applied Basic Research Projects[2019FH001-12] ; Open Project Program of the CAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, ChineseAcademy of Sciences ; NASA Science Mission directorate ; Alfred P. Sloan Foundation[G202114192] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | OXFORD UNIV PRESS |
| WOS记录号 | WOS:000870820200001 |
| 资助机构 | National Natural Science Foundation of China (NSFC) ; Qilu Young Researcher Project of Shandong University ; Chinese Academy of Sciences Interdisciplinary Innovation Team ; Cultivation Project for LAMOST Scientific Payoff and Research Achievement of CAMS-CAS ; Program for Innovative Research Team (in Science and Technology) in the University of Yunnan Province (IRTSTYN) ; Yunnan Local Colleges Applied Basic Research Projects ; Open Project Program of the CAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, ChineseAcademy of Sciences ; NASA Science Mission directorate ; Alfred P. Sloan Foundation |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/4924]  |
| 专题 | 研究单元未命名 |
| 通讯作者 | Guo, Di-Fu; Li, Kai |
| 作者单位 | 1.Wenzhou Astron Assoc, Yueqing 325603, Zhejiang, Peoples R China 2.Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Peoples R China 3.Yuxi Normal Univ, Dept Phys, Yuxi 653100, Yunnan, Peoples R China 4.Shandong Univ, Inst Space Sci, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai 264209, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Di-Fu,Li, Kai,Liu, Fen,et al. The first photometric and orbital period investigation of an extremely low mass ratio contact binary with a sudden period change TYC 4002-2628-1[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2022,517(2):1928-1936. |
| APA | Guo, Di-Fu.,Li, Kai.,Liu, Fen.,Li, Huai-Zhen.,Xia, Qi-Qi.,...&Sun, Guo-You.(2022).The first photometric and orbital period investigation of an extremely low mass ratio contact binary with a sudden period change TYC 4002-2628-1.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,517(2),1928-1936. |
| MLA | Guo, Di-Fu,et al."The first photometric and orbital period investigation of an extremely low mass ratio contact binary with a sudden period change TYC 4002-2628-1".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 517.2(2022):1928-1936. |
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