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. 大样本恒星演化研究组
KIC 8840638: A Newly Discovered Eclipsing Binary with δ Scuti-Type Oscillations

文献类型：期刊论文

作者Yang, Tao-Zhi8; Zuo, Zhao-Yu8; Liu, Jun-Hui6,7; Jiang DK(姜登凯)2,3,4,5; Zhang, Zhi-Xiang7; Tang, Qin-jie8; Hernández, Antonio García1
刊名ASTROPHYSICAL JOURNAL
出版日期2024-11-01
卷号975期号:2
ISSN号0004-637X
DOI10.3847/1538-4357/ad7841
产权排序第4完成单位
文献子类Article
英文摘要In this paper, we analyze the light variation of KIC 8840638 using high-precision time-series data from the Kepler mission. The analysis reveals that this target is a new detached eclipsing binary system with a delta Scuti component, rather than a single delta Scuti star as previously known. The frequency analysis of short-cadence data reveals 95 significant frequencies, most of which lie in a frequency range of 23-32 day-1. Among them, seven independent frequencies are detected in the typical frequency range of delta Scuti stars, and they are identified as pressure modes. In addition, a possible large separation value of Delta nu = 36.5 +/- 0.1 mu Hz is also detected with the Fourier transform (FT) and autocorrelation function (AC) analysis. The orbital frequency f orb (= 0.320008 day-1) and its harmonics are also detected directly in the frequency spectrum. The binary modelings derived from PHOEBE indicate that this binary system is in detached configurations with a mass ratio of q=0.33-0.04+0.06 , an inclination angle of 40.19-2.84+3.96 degrees. The derived parameters and binary evolutionary model suggest that the primary star is an object on the verge of leaving the main sequence with a temperature of similar to 7600 K, while the secondary appears to be a cool component entering the giant branch with a temperature similar to 3100 K lower than the primary. Moreover, this system may have undergone a mass ratio reversal, where the more massive star is the gainer component and the less massive one is the donor star.
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DOUBLE-MODE ; ABSOLUTE DIMENSIONS ; INPUT CATALOG ; 1ST OVERTONE ; KEPLER ; ALGOL ; STARS ; EVOLUTION ; MODULATION ; FREQUENCY
资助项目National Natural Science Foundation of China; Shaanxi Fundamental Science Research Project for Mathematics and Physics[23JSY015]; Spanish State Research Agency (AEI)[PID2019-107061GB-064]; National Key R&D Program of China[2021YFA1600403]; Western Light Project of CAS[XBZG-ZDSYS-202117]; International Centre of Supernovae, Yunnan Key Laboratory[202302AN360001]; Yunnan Fundamental Research Project[202201BC070003]; Yunnan Fundamental Research Project[202401BC070007]; Yunnan Revitalization Talent Support Program-Science & Technology Champion Project[202305AB350003]; Yunnan Ten Thousand Talents Plan Young & Elite Talents Project; China Manned Space Project
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001345609800001
出版者IOP Publishing Ltd
资助机构National Natural Science Foundation of China ; Shaanxi Fundamental Science Research Project for Mathematics and Physics[23JSY015] ; Spanish State Research Agency (AEI)[PID2019-107061GB-064] ; National Key R&D Program of China[2021YFA1600403] ; Western Light Project of CAS[XBZG-ZDSYS-202117] ; International Centre of Supernovae, Yunnan Key Laboratory[202302AN360001] ; Yunnan Fundamental Research Project[202201BC070003, 202401BC070007] ; Yunnan Revitalization Talent Support Program-Science & Technology Champion Project[202305AB350003] ; Yunnan Ten Thousand Talents Plan Young & Elite Talents Project ; China Manned Space Project[CMS-CSST-2021-A08] ; [12473033,12073070] ; [12333008] ; [12288102] ; [12090040/3]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/27672]  
专题云南天文台_大样本恒星演化研究组
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.Departamento de Física Teórica y del Cosmos, Universidad de Granada, Campus de Fuentenueva s/n, E-18071, Granada, Spain
2.International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, People's Republic of China;
3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, People's Republic of China;
4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, People's Republic of China;
5.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650216, People's Republic of China;
6.Research School of Astronomy & Astrophysics, Australian National University, Cotter Road, Weston, ACT 2611, Australia;
7.Department of Astronomy, Xiamen University, 361005 Xiamen, Fujian, People's Republic of China; liujunhui@stu.xmu.edu.cn;
8.Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'an Jiaotong University, 710049 Xi'an, People's Republic of China; zuozyu@xjtu.edu.cn;
推荐引用方式
GB/T 7714		 Yang, Tao-Zhi,Zuo, Zhao-Yu,Liu, Jun-Hui,et al. KIC 8840638: A Newly Discovered Eclipsing Binary with δ Scuti-Type Oscillations[J]. ASTROPHYSICAL JOURNAL,2024,975(2).
APA Yang, Tao-Zhi.,Zuo, Zhao-Yu.,Liu, Jun-Hui.,姜登凯.,Zhang, Zhi-Xiang.,...&Hernández, Antonio García.(2024).KIC 8840638: A Newly Discovered Eclipsing Binary with δ Scuti-Type Oscillations.ASTROPHYSICAL JOURNAL,975(2).
MLA Yang, Tao-Zhi,et al."KIC 8840638: A Newly Discovered Eclipsing Binary with δ Scuti-Type Oscillations".ASTROPHYSICAL JOURNAL 975.2(2024).

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。