中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 云南天文台
  3. 中国科学院云南天文台
  4. 天文技术实验室
Fundamental Parameters for Totally Eclipsing Contact Binaries Observed by TESS

文献类型：期刊论文

作者Ding X(丁旭)5,6,7; Ji KF(季凯帆)4,5,6,7; Song, ZhiMing2,3; Tian, XueFen1; Wang JL(王锦良)4,5,6,7; Wang CJ(王传军)4,5,6,7; Cheng QY(程其原)4,5,6,7; Xiong JP(熊建萍)5,6,7
刊名ASTROPHYSICAL JOURNAL
出版日期2025-07-20
卷号988期号:1
ISSN号0004-637X
DOI10.3847/1538-4357/addfcf
产权排序第1完成单位
文献子类Article
英文摘要Totally eclipsing contact binaries provide a unique opportunity to accurately determine mass ratios through photometric methods alone, eliminating the need for spectroscopic data. Studying low mass ratio (LMR) contact binaries is crucial for advancing our understanding of binary star evolution and the formation of rare optical transients known as red novae. We identified 143 totally eclipsing contact binaries from the Transiting Exoplanet Survey Satellite. These high-precision light curves reveal a distinct O'Connell effect, which we interpret by introducing a cool spot on the primary star. Training a neural network model that includes cool spot parameters can generate a high-precision light curve 2 orders of magnitude faster than Phoebe. Utilizing the neural network (NNnol3) model combined with the Markov Chain Monte Carlo algorithm, we rapidly derived the fundamental parameters of these systems. By leveraging the relationship between orbital period and semimajor axis using the Random Sample Consensus algorithm, we estimated their absolute parameters. Our analysis identified 96 targets with mass ratios below 0.25, all of which were not listed in any previous catalog, thus signifying the discovery of new LMR system candidates. Assuming all 143 binary systems are affected by a third light during parameter estimation, we train a neural network (NNl3) model considering the third light. Then we calculate the residuals between the mass ratio ql3 (considering the third light) and qnol3 (neglecting it). For these residuals, the 25th percentile (Q1) is 0.012, the median (Q2) is 0.026, and the 75th percentile (Q3) is 0.05.
学科主题天文学 ; 恒星与银河系
URL标识查看原文
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
WOS关键词ABSOLUTE-MAGNITUDE CALIBRATION ; MINIMUM MASS-RATIO ; UMA-TYPE SYSTEMS ; URSAE-MAJORIS ; LIGHT CURVES ; PHYSICAL PARAMETERS ; VELOCITY ; STARS ; MODEL ; I.
资助项目National Key R&D Program of China; Strategic Priority Research Programme of the Chinese Academy of Sciences[XDB 41000000]; National Natural Science Foundation of China[12103088]; National Natural Science Foundation of China[12433009]; Yunnan Key Laboratory of Solar Physics and Space Science[202205AG070009]; Yunnan Provincial Key Laboratory of Forensic Science[YJXK005]; Yunnan Basic Research Program[202201AU070116]; Yunnan Basic Research Program[202501AT070027]; Yunnan Key Laboratory of Service Computing, Kunming, China; China Manned Space Project
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001531850500001
出版者IOP Publishing Ltd
资助机构National Key R&D Program of China ; Strategic Priority Research Programme of the Chinese Academy of Sciences[XDB 41000000] ; National Natural Science Foundation of China[12103088, 12433009] ; Yunnan Key Laboratory of Solar Physics and Space Science[202205AG070009] ; Yunnan Provincial Key Laboratory of Forensic Science[YJXK005] ; Yunnan Basic Research Program[202201AU070116, 202501AT070027] ; Yunnan Key Laboratory of Service Computing, Kunming, China ; China Manned Space Project[CMS-CSST-2021-A10, CMS-CSST-2021- A12, CMS-CSST-2021-B10] ; [2022YFF0711500] ; [2023YFA1608300]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/28431]  
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
通讯作者Ji KF(季凯帆)
作者单位1.Communication and Information Engineering College, Yunnan Open University, 650500 Kunming, People’s Republic of China
2.Yunnan Key Laboratory of Service Computing, Kunming, People’s Republic of China;
3.School of Information, Yunnan University of Finance and Economics, Kunming, People’s Republic of China;
4.University of the Chinese Academy of Sciences, Yuquan Road 19#, Shijingshan Block, 100049 Beijing, People’s Republic of China;
5.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, People’s Republic of China;
6.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P. O. Box 110, 650216 Kunming, People’s Republic of China;
7.Yunnan Observatories, Chinese Academy of Sciences (CAS), P.O. Box 110, 650216 Kunming, People’s Republic of China; jkf@ynao.ac.cn;
推荐引用方式
GB/T 7714		 Ding X,Ji KF,Song, ZhiMing,et al. Fundamental Parameters for Totally Eclipsing Contact Binaries Observed by TESS[J]. ASTROPHYSICAL JOURNAL,2025,988(1).
APA 丁旭.,季凯帆.,Song, ZhiMing.,Tian, XueFen.,王锦良.,...&熊建萍.(2025).Fundamental Parameters for Totally Eclipsing Contact Binaries Observed by TESS.ASTROPHYSICAL JOURNAL,988(1).
MLA 丁旭,et al."Fundamental Parameters for Totally Eclipsing Contact Binaries Observed by TESS".ASTROPHYSICAL JOURNAL 988.1(2025).

入库方式： OAI收割

来源：云南天文台

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。