KIC 2857323: A Double-mode High-amplitude delta Scuti Star with Amplitude Decline of the First Overtone Mode

doi:10.3847/1538-4357/ac86c9

XAO OpenIR > 光学天文与技术应用研究室

	KIC 2857323: A Double-mode High-amplitude delta Scuti Star with Amplitude Decline of the First Overtone Mode
	Yang, Tao-Zhi 1; Zuo, Zhao-Yu 1; Sun, Xiao-Ya 1; Tang, Rui-Xuan 1; Esamdin, Ali2
	2022-09-01
Source Publication	ASTROPHYSICAL JOURNAL
ISSN	0004-637X
Volume	936 Issue:1 Pages:48
Contribution Rank	2
Abstract	We investigate the pulsating behavior of KIC 2857323 using high-precision observations from the Kepler mission. Fourier analysis of 4 yr time-series data reveals five independent frequencies for the light variation. Among them, two strong frequencies f (1) and f (3) with a period ratio of 0.774 identify this star as a double-mode (i.e., the fundamental mode F0 and first overtone mode F1) high-amplitude delta Scuti star (HADS). Seismic modeling using the two radial modes F0 and F1 indicates that KIC 2857323 is a main-sequence star with mass M = 1.78 +/- 0.02 M (circle dot) and metallicity Z from 0.009 to 0.012. We analyze the phase and amplitude variations of F0 and F1 using the phase modulation method and find that the first overtone mode F1 shows a slow decline in amplitude. We discuss several possible causes for the amplitude variation and speculate that the amplitude decline in this star may be due to pulsation energy loss. We note that KIC 2857323 is the first double-mode HADS to show amplitude decline and warrants further study to ascertain its nature.
DOI	10.3847/1538-4357/ac86c9
Indexed By	SCI
Language	英语
WOS Keyword	PULSATION MODES ; KEPLER ; MODULATION ; FREQUENCY ; ASTEROSEISMOLOGY ; EVOLUTION
Funding Project	National Natural Science Foundation of China[12003020] ; National Natural Science Foundation of China[U1938104] ; National Natural Science Foundation of China[U2031209]
WOS Research Area	Astronomy & Astrophysics
WOS Subject	Astronomy & Astrophysics
WOS ID	WOS:000847575300001
Publisher	IOP Publishing Ltd
Funding Organization	National Natural Science Foundation of China
Citation statistics	Cited Times:8[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.xao.ac.cn/handle/45760611-7/4858
Collection	光学天文与技术应用研究室
Corresponding Author	Zuo, Zhao-Yu
Affiliation	1.Xi An Jiao Tong Univ, Sch Phys, Key Lab Nonequilibrium Synth & Modulat Condensed, Minist Educ, Xian 710049, Peoples R China 2.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China
Recommended Citation GB/T 7714	Yang, Tao-Zhi,Zuo, Zhao-Yu,Sun, Xiao-Ya,et al. KIC 2857323: A Double-mode High-amplitude delta Scuti Star with Amplitude Decline of the First Overtone Mode[J]. ASTROPHYSICAL JOURNAL,2022,936(1):48.
APA	Yang, Tao-Zhi,Zuo, Zhao-Yu,Sun, Xiao-Ya,Tang, Rui-Xuan,&Esamdin, Ali.(2022).KIC 2857323: A Double-mode High-amplitude delta Scuti Star with Amplitude Decline of the First Overtone Mode.ASTROPHYSICAL JOURNAL,936(1),48.
MLA	Yang, Tao-Zhi,et al."KIC 2857323: A Double-mode High-amplitude delta Scuti Star with Amplitude Decline of the First Overtone Mode".ASTROPHYSICAL JOURNAL 936.1(2022):48.

Files in This Item:
File Name/Size	DocType	Version	Access	License
Yang-2022-KIC 285732（1388KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	View Application Full Text

File name:	Yang-2022-KIC 2857323_ A Double-mode High-ampl.pdf
Format:	Adobe PDF

If you have any objections to this item, please fill out the form below and the administrator will contact you as soon as possible.
Content:
Email：	*
Institution:
Verification Code:	Refresh

Any comments and suggestions are welcomed.
Title:	*
Content:
Email：	*
Verification Code:	Refresh

光学天文与技术应用研究室知识库