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A Study on the Orbital Period Variation of AR Lacertae
Lu, Ye1,2; Xiang, Fu-Yuan1,2; Shi, Xiao-Min1,2
Source PublicationPUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
2012-08-25
Volume64Issue:4
DOI10.1093/pasj/64.4.84
Indexed BySCI
KeywordStars: Binaries: Eclipsing Stars: Binaries: Orbital Period StArs: Individual (Ar Lacertae)
Abstract

In this paper, we collect all available times of the light minimum of AR Lac from the literature and databases. Through an analysis of the O - C curve by a weighted least-squares method, we found that the orbital period of the system shows a cyclic oscillation with a period of 50.93 yr superimposed on a long-term secular period decrease at a rate of dP/dt = -(2.128 +/- 0.060) x 10(-9) d/d. Since both components of AR Lac are late-type stars, and show strong Ca H and K emission lines, the orbital period variation may be caused by the magnetic activity of the system.

Funding ProjectChinese Natural Science Foundations[10878012] ; Chinese Natural Science Foundations[11173019] ; Chinese Natural Science Foundations[11133007] ; Chinese Natural Science Foundations[10903007] ; Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences
Funding OrganizationChinese Natural Science Foundations[10878012, 11173019, 11133007, 10903007] ; Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences
Language英语
Subject Area天文学 ; 恒星与银河系
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherOXFORD UNIV PRESS
Publication PlaceGREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0004-6264
URL查看原文
WOS IDWOS:000309296600021
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordRS-CANUM-VENATICORUM ; CLOSE BINARIES ; PHOTOELECTRIC PHOTOMETRY ; SYSTEMS ; LAC ; MODULATION ; CYCLES
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9432
Collection中国科学院天体结构与演化重点实验室
Corresponding AuthorLu, Ye
Affiliation1.Department of Physics, Xiangtan University, 411105 Xiangtan, Hunan Province, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650011 Kunming, China
Recommended Citation
GB/T 7714
Lu, Ye,Xiang, Fu-Yuan,Shi, Xiao-Min. A Study on the Orbital Period Variation of AR Lacertae[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2012,64(4).
APA Lu, Ye,Xiang, Fu-Yuan,&Shi, Xiao-Min.(2012).A Study on the Orbital Period Variation of AR Lacertae.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,64(4).
MLA Lu, Ye,et al."A Study on the Orbital Period Variation of AR Lacertae".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 64.4(2012).
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