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Photometric analysis of the dwarf nova SU UMa based on TESS

文献类型：期刊论文

作者Liu W(刘伟)1,2,3; Shi XD(施相东)1,2,3; Fang, Xiao-Hui4; Wang, Qi-Shan4
刊名NEW ASTRONOMY
出版日期2024-02
卷号106
关键词Photometric Dwarf novae Binary star Stars Individual (SU UMa)
ISSN号1384-1076
DOI10.1016/j.newast.2023.102129
产权排序第1完成单位
文献子类Article
英文摘要We report the photometric analysis of SU UMa based on the observations of the Transiting Exoplanet Survey Satellite (TESS). TESS has released a large amount of data, which contains the light curves of a complete superoutburst and three normal outbursts of SU UMa. Based on the observations, the evolution of superhumps during the superoutburst was analyzed. By using the O -C method, the three stages were determined, and the superhump period for each stage was calculated. The mass ratio q = 0.137(1) was estimated based on the stage A superhump method. A periodic oscillation with a period of 2.17(9) days was found in the superhump minimum O -C diagram, which is related to the precession of the accretion disk. We investigated the frequency information of quasiperiodic oscillations (QPOs) in the light curves. An ultralong period QPO of 0.18 days at the time of normal outburst and two ultralong periods QPOs of 0.19 days and 0.285 days in quiescence were found. No QPO was found in the superoutburst.
学科主题天文学
URL标识查看原文
出版地RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS
WOS关键词QUASI-PERIODIC OSCILLATIONS ; CATACLYSMIC VARIABLES ; SPECTRAL-ANALYSIS ; ACCRETION DISKS ; URSAE MAJORIS ; SUPERHUMPS ; MODEL ; SIMULATIONS
资助项目National Natural Science Foun-dation of China[11933008]; National Natural Science Foun-dation of China[12103084]; basic research project of Yunnan Province, China[202301AT070352]; Natural Science Foundation of Anhui Province, China[2208085QA23]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001097822900001
出版者ELSEVIER
资助机构National Natural Science Foun-dation of China[11933008, 12103084] ; basic research project of Yunnan Province, China[202301AT070352] ; Natural Science Foundation of Anhui Province, China[2208085QA23]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/26425]  
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.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P.O. Box 110, 650216 Kunming, PR China;
2.Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, Kunming 650216, PR China;
3.University of Chinese Academy of Sciences, No. 1 Yanqihu East Rd, Huairou District, Beijing 101408, PR China;
4.School of Mathematics, Physics and Finance, Anhui Polytechnic University, Wuhu 241000, PR China
推荐引用方式
GB/T 7714		 Liu W,Shi XD,Fang, Xiao-Hui,et al. Photometric analysis of the dwarf nova SU UMa based on TESS[J]. NEW ASTRONOMY,2024,106.
APA 刘伟,施相东,Fang, Xiao-Hui,&Wang, Qi-Shan.(2024).Photometric analysis of the dwarf nova SU UMa based on TESS.NEW ASTRONOMY,106.
MLA 刘伟,et al."Photometric analysis of the dwarf nova SU UMa based on TESS".NEW ASTRONOMY 106(2024).

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来源：云南天文台

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