Photometric analysis of 40 low mass-ratio contact binary systems in the Catalina Sky Survey
文献类型：期刊论文
| 作者 | Wang JL(王锦良)3,4 ; 丁旭(1,2,3,4★); Liu, Wei5; Yu LH(于立欢)3,4; Xu C(徐冲)3,4; Ji KF(季凯帆)1,2,3,4
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| 刊名 | ASTRONOMY & ASTROPHYSICS
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| 出版日期 | 2025-01-10 |
| 卷号 | 693 |
| 关键词 | methods: data analysis techniques: photometric binaries: close stars: evolution |
| ISSN号 | 0004-6361 |
| DOI | 10.1051/0004-6361/202451987 |
| 产权排序 | 第1完成单位 |
| 文献子类 | Article |
| 英文摘要 | Low mass-ratio contact binary systems are a fascinating class of eclipsing binaries; they are widely regarded as the potential progenitors of stellar mergers. For this study we analyzed 40 newly discovered low mass-ratio totally eclipsing contact binary systems identified from the Catalina Sky Survey data. The relative parameters for these systems were inferred using a neural network model combined with a Bayesian inference-based Hamiltonian Monte Carlo (HMC) algorithm, with uncertainties estimated from the posterior distributions generated by the HMC algorithm. The absolute parameters were then calculated using these relative parameters, along with distances and temperatures provided by Gaia Data Release 3. Among the 40 systems, 24 are deep low mass-ratio overcontact binaries, characterized by fill-out factors of 0.5 or higher and mass ratios of 0.25 or lower. Notably, two systems, CSS_J071952.5+243224 and CSS_J155519.0+135855, have mass ratios below 0.1, specifically 0.094 +/- 0.006 and 0.086 +/- 0.004, respectively. Furthermore, we compared the parameters obtained in this study with those from 39 low mass-ratio contact binary systems identified in previous research, finding that the estimated parameters are largely consistent. Finally, to evaluate the evolutionary status of the 40 systems, we calculated the ratio of spin angular momentum to orbital angular momentum for each and found that all are currently in a relatively stable evolutionary phase. |
| 学科主题 | 天文学 ; 恒星与银河系 |
| URL标识 | 查看原文 |
| 出版地 | 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE |
| WOS关键词 | BOLOMETRIC CORRECTIONS ; DEEP ; PARAMETERS ; STABILITY ; EVOLUTION ; ORIGIN ; PERIOD |
| 资助项目 | Natural Science Foundation of China[12103088]; Natural Science Foundation of China[12433009] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001395031500007 |
| 出版者 | EDP SCIENCES S A |
| 资助机构 | Natural Science Foundation of China[12103088, 12433009] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/28002]  |
| 专题 | 天文技术实验室 云南天文台_大样本恒星演化研究组 云南天文台_丽江天文观测站（南方基地） 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.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, PO Box 110, 650216 Kunming, PR China; 2.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, PR China; 3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, PR China; 4.University of Chinese Academy of Sciences, Beijing 100049, PR China; 5.College of Physics and Electronic Engineering, Xingtai University, Xingtai 054001, PR China |
| 推荐引用方式 GB/T 7714 | Wang JL,Ding X,Liu, Wei,et al. Photometric analysis of 40 low mass-ratio contact binary systems in the Catalina Sky Survey[J]. ASTRONOMY & ASTROPHYSICS,2025,693. |
| APA | 王锦良,丁旭,Liu, Wei,于立欢,徐冲,&季凯帆.(2025).Photometric analysis of 40 low mass-ratio contact binary systems in the Catalina Sky Survey.ASTRONOMY & ASTROPHYSICS,693. |
| MLA | 王锦良,et al."Photometric analysis of 40 low mass-ratio contact binary systems in the Catalina Sky Survey".ASTRONOMY & ASTROPHYSICS 693(2025). |
入库方式： OAI收割
来源：云南天文台
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