Evidence of Stellar Oscillations in the Post-common-envelope Binary Candidate ASASSN-V J205543.90+240033.5

doi:10.3847/2041-8213/acec4c

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	Evidence of Stellar Oscillations in the Post-common-envelope Binary Candidate ASASSN-V J205543.90+240033.5
	Takata, J.9; Kong, A. K. H.8; Wang, X. F.9; Song FF(宋非凡)5,6,7; Mao JR(毛基荣)4,6,7; Hou X(侯贤)6,7; Hu, C.-P.3; Lin, L. C.-C.2; Li, K. L.2; Hui, C. Y.1
刊名	ASTROPHYSICAL JOURNAL LETTERS
	2023-08-01
卷号	953 期号:2
ISSN号	2041-8205
DOI	10.3847/2041-8213/acec4c
产权排序	第3完成单位
文献子类	Article
英文摘要	ASASSN-V J205543.90+240033.5 (ASJ2055) is a possible post-common-envelope binary system. Its optical photometric data show an orbital variation of about 0.52 days and a fast period modulation of P (0) & SIM; 9.77 minutes, whose origin is unknown. In this Letter, we report evidence of the stellar oscillation of the companion star as the origin of the fast period modulation. We analyze the photometric data taken by the Transiting Exoplanet Survey Satellite, the Liverpool Telescope, and the Lulin One-meter Telescope. It is found that the period of the 9.77 minutes signal measured in 2022 August is significantly shorter than that in 2021 July/August, and the magnitude of the change is of the order of divide oP (0) divide /P (0) & SIM; 0.0008(4). Such a large variation will be incompatible with the scenario of the white dwarf (WD) spin as the origin of the 9.77 minutes periodic modulation. We suggest that the fast periodic signal is related to the emission from the irradiated companion star rather than that of the WD. Using existing photometric data covering a wide wavelength range, we estimate that the hot WD in ASJ2055 has a temperature of T (eff) & SIM; 80,000 K and is heating the oscillating M-type main-sequence star with T (eff) & SIM; 3500 K on its unirradiated surface. The stellar oscillation of the M-type main-sequence star has been predicted in theoretical studies, but no observational confirmation has been done. ASJ2055, therefore, has the potential to be a unique laboratory for investigating the stellar oscillation of an M-type main-sequence star and the heating effect on stellar oscillation.
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
资助项目	National Key Research and Development Program of China[2020YFC2201400] ; National Natural Science Foundation of China[12173014] ; National Natural Science Foundation of China[12041303] ; National Natural Science Foundation of China[111-2112-M-007-020] ; National Science and Technology Council of Taiwan[11673062] ; Yunnan Revitalization Talent Support Program (YunLing Scholar Award) ; National Science and Technology Council[MOST 109-2112-M-018-009-MY3] ; NSTC[110-2112-M-006-006-MY3] ; NSTC[111-2811-M-006-012] ; National Science and Technology Council[111-2636-M-006-024] ; Ministry of Education of the Republic of China (Taiwan) ; research fund of Chungnam National University ; National Research Foundation of Korea[2022R1F1A1073952]
WOS关键词	WHITE-DWARF PULSAR ; MT. SUHORA SURVEY ; SUBDWARF B STAR ; PULSATIONS ; EMISSION ; SYSTEM ; MODEL ; SPECTROSCOPY
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP Publishing Ltd
WOS记录号	WOS:001049744300001
资助机构	National Key Research and Development Program of China[2020YFC2201400] ; National Natural Science Foundation of China[12173014, 12041303, 111-2112-M-007-020] ; National Science and Technology Council of Taiwan[11673062] ; Yunnan Revitalization Talent Support Program (YunLing Scholar Award) ; National Science and Technology Council[MOST 109-2112-M-018-009-MY3] ; NSTC[110-2112-M-006-006-MY3, 111-2811-M-006-012] ; National Science and Technology Council[111-2636-M-006-024] ; Ministry of Education of the Republic of China (Taiwan) ; research fund of Chungnam National University ; National Research Foundation of Korea[2022R1F1A1073952]
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ynao.ac.cn/handle/114a53/26177]
专题	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	Takata, J.
作者单位	1.Department of Astronomy and Space Science, Chungnam National University, Daejeon 305-764, Republic of Korea 2.Department of Physics, National Cheng Kung University, Tainan 701401, Taiwan; 3.Department of Physics, National Changhua University of Education, Changhua 50007, Taiwan; 4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, 100012 Beijing, People's Republic China; 5.University of Chinese Academy of Sciences, 100049 Beijing, People's Republic of China; 6.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650011 Kunming, People's Republic of China; 7.Yunnan Observatories, Chinese Academy of Sciences, 650011 Kunming, Yunnan Province, People's Republic of China; 8.Institute of Astronomy, National Tsing Hua University, Hsinchu 30013, Taiwan; akong@gapp.nthu.edu.tw; 9.Department of Astronomy, School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China; takata@hust.edu.cn;
推荐引用方式 GB/T 7714	Takata, J.,Kong, A. K. H.,Wang, X. F.,et al. Evidence of Stellar Oscillations in the Post-common-envelope Binary Candidate ASASSN-V J205543.90+240033.5[J]. ASTROPHYSICAL JOURNAL LETTERS,2023,953(2).
APA	Takata, J..,Kong, A. K. H..,Wang, X. F..,Song FF.,Mao JR.,...&Hui, C. Y..(2023).Evidence of Stellar Oscillations in the Post-common-envelope Binary Candidate ASASSN-V J205543.90+240033.5.ASTROPHYSICAL JOURNAL LETTERS,953(2).
MLA	Takata, J.,et al."Evidence of Stellar Oscillations in the Post-common-envelope Binary Candidate ASASSN-V J205543.90+240033.5".ASTROPHYSICAL JOURNAL LETTERS 953.2(2023).