Photometric analysis of the dwarf nova SU UMa based on TESS

doi:10.1016/j.newast.2023.102129

	Photometric analysis of the dwarf nova SU UMa based on TESS
	Liu W(刘伟)1,2,3; Shi XD(施相东)1,2,3; Fang, Xiao-Hui 4; Wang, Qi-Shan 4
刊名	NEW ASTRONOMY
	2024-02
卷号	106
关键词	Photometric Dwarf novae Binary star Stars Individual (SU UMa)
ISSN号	1384-1076
DOI	10.1016/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
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关键词	QUASI-PERIODIC OSCILLATIONS ; CATACLYSMIC VARIABLES ; SPECTRAL-ANALYSIS ; ACCRETION DISKS ; URSAE MAJORIS ; SUPERHUMPS ; MODEL ; SIMULATIONS
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:001097822900001
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]
内容类型	期刊论文
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
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.University of Chinese Academy of Sciences, No. 1 Yanqihu East Rd, Huairou District, Beijing 101408, PR China; 3.Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, Kunming 650216, 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).