KIC 3440495: A Rapidly Rotating delta Scuti-gamma Doradus Hybrid Pulsator in a Binary System

doi:10.3847/1538-4357/ac8c30

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	KIC 3440495: A Rapidly Rotating delta Scuti-gamma Doradus Hybrid Pulsator in a Binary System
	Ma, Shuguo1,2 ; Esamdin, Ali1,2 ; Hernandez, Antonio Garcia 3; Murphy, Simon J.4; Lv, Chenglong1,2 ; Wei, Peng1 ; Rieutord, Michel 5; Pascual-Granado, Javier 6; Dang, Fei1 ; Niu, Hubiao1 ; Yang, TaoZhi7 ; Feng, Guojie1 ; Karimov, Rivkat 8; Tillayev, Yusuf 8
	2022-10-01
Source Publication	ASTROPHYSICAL JOURNAL
ISSN	0004-637X
Volume	937 Issue:2 Pages:80
Contribution Rank	1
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 Delta nu = 54.5 mu Hz is found by using a Fourier transform, the autocorrelation function, a histogram of frequency differences, and an echelle 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 (circle dot), R (equator) = [2.03, 2.30] R (circle dot), R (polar) = [1.72, 1.78] R (circle dot), and omega = [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.
DOI	10.3847/1538-4357/ac8c30
Indexed By	SCI
Language	英语
WOS Keyword	A-TYPE STARS ; TO-CORE ROTATION ; PHASE MODULATION ; FINDING BINARIES ; ASTEROSEISMIC MEASUREMENT ; ACOUSTIC-OSCILLATIONS ; POLYTROPIC STARS ; MAGNETIC-FIELDS ; MAIN-SEQUENCE ; F STARS
Funding Project	National Natural Science Foundation of China[12003060] ; National Natural Science Foundation of China[U2031209] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[2020D01B59] ; Chinese Academy of Sciences (CAS) Light of West China Program[2021-XBQNXZ-029] ; FEDER/Junta de Andalucia-Consejeria de Economia y Conocimiento by Universidad de Granada[E-FQM-041-UGR18] ; Programas Estatales de Generacion de Conocimiento y Fortalecimiento Cientifico y Tecnologico del Sistema de I+D+i y de I+D+i Orientada a los Retos de la Sociedad from the Spanish Ministry of Science, Innovation and Universities (MCIU)[PID2019-107061GB-C63] ; State Agency for Research through the Center of Excellence Severo Ochoa award from the Spanish Ministry of Science, Innovation and Universities (MCIU)[SEV-2017-0709]
WOS Research Area	Astronomy & Astrophysics
WOS Subject	Astronomy & Astrophysics
WOS ID	WOS:000862120200001
Publisher	IOP Publishing Ltd
Funding Organization	National Natural Science Foundation of China ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; Chinese Academy of Sciences (CAS) Light of West China Program ; FEDER/Junta de Andalucia-Consejeria de Economia y Conocimiento by Universidad de Granada ; Programas Estatales de Generacion de Conocimiento y Fortalecimiento Cientifico y Tecnologico del Sistema de I+D+i y de I+D+i Orientada a los Retos de la Sociedad from the Spanish Ministry of Science, Innovation and Universities (MCIU) ; State Agency for Research through the Center of Excellence Severo Ochoa award from the Spanish Ministry of Science, Innovation and Universities (MCIU)
Citation statistics	Cited Times:5[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.xao.ac.cn/handle/45760611-7/4897
Collection	光学天文与技术应用研究室
Corresponding Author	Ma, Shuguo
Affiliation	1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China 2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China 3.Univ Granada, Theoret Phys & Cosmos, E-18071 Granada, Spain 4.Univ Southern Queensland, Ctr Astrophys, Toowoomba, Qld 4350, Australia 5.Univ Toulouse, CNES, UPS, CNRS,IRAP, 14 Ave Edouard Belin, F-31400 Toulouse, France 6.Inst Astrofis Andalucia, Glorieta Astron S-N, E-18008 Granada, Spain 7.Xi An Jiao Tong Univ, Sch Phys, Xian 710049, Peoples R China 8.Uzbek Acad Sci, Ulugh Beg Astron Inst, 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,Hernandez, Antonio Garcia,et al. KIC 3440495: A Rapidly Rotating delta Scuti-gamma Doradus Hybrid Pulsator in a Binary System[J]. ASTROPHYSICAL JOURNAL,2022,937(2):80.
APA	Ma, Shuguo.,Esamdin, Ali.,Hernandez, Antonio Garcia.,Murphy, Simon J..,Lv, Chenglong.,...&Tillayev, Yusuf.(2022).KIC 3440495: A Rapidly Rotating delta Scuti-gamma Doradus Hybrid Pulsator in a Binary System.ASTROPHYSICAL JOURNAL,937(2),80.
MLA	Ma, Shuguo,et al."KIC 3440495: A Rapidly Rotating delta Scuti-gamma Doradus Hybrid Pulsator in a Binary System".ASTROPHYSICAL JOURNAL 937.2(2022):80.

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