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A photometric study of the WUMa-type contact binary RZ Com
He JJ(何家佳)1,2,3; Qian SB(钱声帮)1,2; He, JJ (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
Source PublicationCHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
2008-08
Volume8Issue:4Pages:465-471
DOI10.1088/1009-9271/8/4/10
Contribution Rank第1完成单位
Indexed BySCI
KeywordStars : Binaries : Close Stars : Binaries : Eclipsing Stars : Individual : Rz Corn
AbstractWe present results of CCD photometric observations of the short-period W UMa-type contact binary system, RZ Com. The light curve of the binary has changed from W-subtype to A-subtype from 1998 to 2003, then back to W-subtype in 2004. An analysis was carried out using the 2003 version of the Wilson-Devinney code. It is confirmed that RZ Com is a low-degree, overcontact f = 20.1% (+/- 7.4%) binary system with a high inclination of i = 81.degrees 40 (+/-.degrees 40), and a mass ratio q = 2.351 (+/- 0.031). Combining four newly determined times of light minimum with others in the literature, the variations in orbital period is examined. A small-amplitude oscillation (A=0.0065d), with a period of 41.5 year, is discovered superimposed on a long-term increase at rate dP/dt = +3.97 x 10(-8)d yr(-1). The period oscillation can be explained either by the light-time effect due to the presence of an unseen third body, or by cycles of magnetic activity on the components. Combining our photometric solution with the spectroscopic elements obtained by Mclean & Hilditch, the absolute dimensions of RZ Corn are: M(1) = 1.14 (+/- 0.19)M(circle dot), M(2) = 0.50 (+/- 0.09)M(circle dot), R(1) = 1.12 (+/- 0.01)R(circle dot), R(2) = 0.78 (+/- 0.01)R(circle dot) and A = 2.41 (+/- 0.02)R(circle dot).
Funding OrganizationNSFC(10573032, 10433030, 10573013) ; Yunnan Natural Science Foundation(2005A0059M)
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN1009-9271
URL查看原文
Archive Date2008-12-18
WOS IDWOS:000258698200010
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordORBITAL ELEMENTS ; AM LEONIS ; SYSTEMS ; PERIOD
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Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/5809
Collection双星与变星研究组
Corresponding AuthorHe, JJ (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
Affiliation1.National Astronomical Observatories / Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China
2.United Laboratory of Optical Astronomy, Chinese Academy of Sciences (ULOAC), Beijing 100012, China
3.Graduate School of Chinese Academy of Sciences, Beijing 100049, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
He JJ,Qian SB,He, JJ . A photometric study of the WUMa-type contact binary RZ Com[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2008,8(4):465-471.
APA He JJ,Qian SB,&He, JJ .(2008).A photometric study of the WUMa-type contact binary RZ Com.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,8(4),465-471.
MLA He JJ,et al."A photometric study of the WUMa-type contact binary RZ Com".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 8.4(2008):465-471.
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