Photometric and Spectroscopic Analysis of Eight Totally Eclipsing Contact Binaries with Small Mass Ratios
文献类型：期刊论文
| 作者 | Wang, Li-Heng3; Li, Kai3; Guo, Ya-Ni3; Wang, Jing-Yi3; Gao, Xiang3; Gao, Xing2; Sun, Guo-You1 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2024-12-01 |
| 卷号 | 976期号:2页码:223 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ad7f4b |
| 产权排序 | 2 |
| 英文摘要 | This paper selected eight totally eclipsing contact binaries for photometric and spectroscopic studies. Spectral data were analyzed by University of Lyon Spectroscopic analysis Software, and photometric data were analyzed using PHOEBE through Markov Chain Monte Carlo (MCMC) sampling. We used two methods to calculate the initial values for running MCMC: one method is a new approach proposed by ourselves to model light curves without spots, while the other method is the genetic algorithm, which can determine physical parameters with spots. The results imply that these eight targets are all contact binary stars with a small mass ratio below 0.25. There are four systems exhibiting the O'Connell effect. By adding a dark spot on the primary component, the ideal fitting can be obtained. Meanwhile, it was found that two systems are shallow contact binaries, while the remaining six are moderate contact binaries. An O - C analysis of the eight eclipsing binary stars revealed that seven of them exhibit long-term changes. Four of them display a long-term decreasing trend in orbital period, while the other three show a long-term increasing trend, and two targets exhibit periodic variations. A decrease in period may be caused by the transfer of matter from the more massive component to the less massive component, while an increase in period may be caused by transfer in the opposite way. The absolute physical parameters, orbital angular momentum, initial masses, and ages of these eight systems were calculated. Additionally, their mass-luminosity and mass-radius distributions were analyzed. |
| WOS关键词 | SHORT-PERIOD LIMIT ; PHYSICAL PARAMETERS ; LIGHT CURVES ; STAR LIGHT ; EVOLUTION ; DEEP ; TAU ; I. |
| 资助项目 | MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[12273018] ; MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[U1931103] ; National Natural Science Foundation of China (NSFC) ; NSFC ; Chinese Academy of Sciences (CAS) ; Qilu Young Researcher Project of Shandong University |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001362658500001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809 ; National Natural Science Foundation of China (NSFC) ; NSFC ; Chinese Academy of Sciences (CAS) ; Qilu Young Researcher Project of Shandong University |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/7159]  |
| 专题 | 研究单元未命名 |
| 通讯作者 | Li, Kai |
| 作者单位 | 1.Xingming Observ, Urumqi, Xinjiang, Peoples R China 2.Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Peoples R China 3.Shandong Univ, Inst Space Sci, Sch Space Sci & Phys, Shandong Key Lab Opt Astron & Solar Terr Environm, Weihai 264209, Shandong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Li-Heng,Li, Kai,Guo, Ya-Ni,et al. Photometric and Spectroscopic Analysis of Eight Totally Eclipsing Contact Binaries with Small Mass Ratios[J]. ASTROPHYSICAL JOURNAL,2024,976(2):223. |
| APA | Wang, Li-Heng.,Li, Kai.,Guo, Ya-Ni.,Wang, Jing-Yi.,Gao, Xiang.,...&Sun, Guo-You.(2024).Photometric and Spectroscopic Analysis of Eight Totally Eclipsing Contact Binaries with Small Mass Ratios.ASTROPHYSICAL JOURNAL,976(2),223. |
| MLA | Wang, Li-Heng,et al."Photometric and Spectroscopic Analysis of Eight Totally Eclipsing Contact Binaries with Small Mass Ratios".ASTROPHYSICAL JOURNAL 976.2(2024):223. |
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来源：新疆天文台
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