KMS of Xinjiang Astronomical Observatory, CAS
| KIC 3440495: A Rapidly Rotating δ Scuti-γ Doradus Hybrid Pulsator in a Binary System | |
Ma,Shuguo1,2 ; Esamdin,Ali1,2; Hernández,Antonio García3; Murphy,Simon J.4; Lv,Chenglong1,2; Wei,Peng1; Rieutord,Michel5; Pascual-Granado,Javier6; Dang,Fei1; Niu,Hubiao1; Yang,TaoZhi7; Feng,Guojie1; Karimov,Rivkat8; Tillayev,Yusuf8
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| 2022-09-30 | |
| Source Publication | The Astrophysical Journal
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| ISSN | 0004-637X |
| Volume | 937Issue:2 |
| Abstract | Abstract In this paper, we study the pulsation properties of KIC 3440495 using Kepler and TESS data. A Fourier analysis of the light curve reveals 24 pulsation modes as well as 29 frequencies associated with rotation. The rotation frequency is derived to be f rot = 2.322909(2) day?1, and the rotational modulation is determined to be caused by starspots. A large frequency separation of Δν = 54.5 μHz is found by using a Fourier transform, the autocorrelation function, a histogram of frequency differences, and an échelle diagram. We use the large separation to estimate the refined stellar parameters of the star to be v = [239, 279] km s?1, M = [1.5, 1.65] M ⊙, R equator = [2.03, 2.30] R ⊙, R polar = [1.72, 1.78] R ⊙, and ω = [0.61, 0.77]. The phase modulations of the pulsating frequencies show a long-term trend which may be attributed to an orbital effect of a binary system; hence, the star may be a fast rotating pulsator in a binary system. KIC 3440495 has an amplitude spectrum similar to Altair, and is identified as a potential sister of Altair. Based on studies of Altair, KIC 3330495 is presumably a young star at a similar evolutionary stage. |
| Corresponding Author | Esamdin,Ali() |
| DOI | 10.3847/1538-4357/ac8c30 |
| Language | 英语 |
| WOS ID | IOP:apj_937_2_80 |
| Publisher | The American Astronomical Society |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/6179 |
| Collection | 中国科学院新疆天文台 |
| Corresponding Author | Esamdin,Ali |
| Affiliation | 1.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, People’s Republic of China; mashuguo@xao.ac.cn, aliyi@xao.ac.cn 2.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China 3.Theoretical Physics and the Cosmos, University of Granada, E-18071, Granada, Spain 4.Centre for Astrophysics, University of Southern Queensland, Toowoomba, QLD 4350, Australia 5.IRAP, Université de Toulouse, CNRS, UPS, CNES, 14, Avenue édouard Belin, F-31400 Toulouse, France 6.Instituto de Astrofísica de Andalucía, Glorieta de la Astronomía s/n, E-18008 Granada, Spain 7.School of Physics, Xi’an Jiaotong University, Xi’an 710049, People's Republic of China 8.Ulugh Beg Astronomical Institute, Uzbekistan Academy of Sciences, Tashkent 100052, Uzbekistan |
| First Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Corresponding Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Ma,Shuguo,Esamdin,Ali,Hernández,Antonio García,et al. KIC 3440495: A Rapidly Rotating δ Scuti-γ Doradus Hybrid Pulsator in a Binary System[J]. The Astrophysical Journal,2022,937(2). |
| APA | Ma,Shuguo.,Esamdin,Ali.,Hernández,Antonio García.,Murphy,Simon J..,Lv,Chenglong.,...&Tillayev,Yusuf.(2022).KIC 3440495: A Rapidly Rotating δ Scuti-γ Doradus Hybrid Pulsator in a Binary System.The Astrophysical Journal,937(2). |
| MLA | Ma,Shuguo,et al."KIC 3440495: A Rapidly Rotating δ Scuti-γ Doradus Hybrid Pulsator in a Binary System".The Astrophysical Journal 937.2(2022). |
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