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Pulsations of the High-Amplitude delta Scuti star YZ Bootis
Yang, Tao-Zhi1,2; Esamdin, Ali1; Fu, Jian-Ning1,3; Niu, Hu-Biao1; Feng, Guo-Jie1; Song, Fang-Fang1,2; Liu, Jin-Zhong1; Ma, Lu1
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We present a study on pulsations of the high-amplitude delta Scuti star YZ Boo based on photometric observations in Johnson V and R bands with both the Nanshan 1-m telescope of Xinjiang Astronomical Observatory (XAO) and the Xinglong 85-cm telescope of National Astronomical Observatories, Chinese Academy of Sciences (NAOC). Fourier analysis of the light curves reveals the fundamental radial mode and its five harmonics, with the fourth and fifth being newly detected. Thirty-nine new times of maximum light are determined from the light curves, and combined with those in the literature, we construct the O - C diagram, derive a new ephemeris and determine a new value for the updated period of 0.104091579(2). In addition, the O - C diagram reveals an increasing rate of period change for YZ Boo. Theoretical models are calculated and constrained with the observationally determined parameters of YZ Boo. The mass and age of YZ Boo are hence derived as M = 1.61 +/- 0.05 M-circle dot and age = (1.44 +/- 0.14) x 10(9) yr, respectively. With both the frequency of the fundamental radial mode and the rate of period change, YZ Boo is located at the post main sequence stage.

KeywordStars: Variables: Delta Scuti Star Stars: Individual (Yz Boo) Stars: Oscillations
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
WOS KeywordRr-lyrae Stars ; 3-color Photometry ; Period ; Telescope
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000428267100002
Funding OrganizationNational Natural Science Foundation of China (NSFC)(11273051) ; Chinese Academy of Sciences (CAS)(2015-XBQN-A-02) ; Strategic Priority Research Program of CAS(XDB23040100) ; NSFC(U1231202, 11673003, 11403088) ; CAS(U1231202, 11673003) ; National Basic Research Program of China (973 Program)(2014CB845700, 2013CB834900) ; LAMOST FELLOWSHIP ; Special Funding for Advanced Users
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorYang, Tao-Zhi
Affiliation1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
First Author AffilicationXinjiang Astronomical Observatory, Chinese Academy of Sciences
Corresponding Author AffilicationXinjiang Astronomical Observatory, Chinese Academy of Sciences
Recommended Citation
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Yang, Tao-Zhi,Esamdin, Ali,Fu, Jian-Ning,et al. Pulsations of the High-Amplitude delta Scuti star YZ Bootis[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2018,18(1):2.
APA Yang, Tao-Zhi.,Esamdin, Ali.,Fu, Jian-Ning.,Niu, Hu-Biao.,Feng, Guo-Jie.,...&Ma, Lu.(2018).Pulsations of the High-Amplitude delta Scuti star YZ Bootis.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,18(1),2.
MLA Yang, Tao-Zhi,et al."Pulsations of the High-Amplitude delta Scuti star YZ Bootis".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 18.1(2018):2.
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