A Study on the Orbital Period Variation of AR Lacertae
Lu, Ye1,2; Xiang, Fu-Yuan1,2; Shi, Xiao-Min1,2; Lu, Y (reprint author), Xiangtan Univ, Dept Phys, Xiangtan 411105, Hunan, Peoples R China.
发表期刊PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
2012-08-25
卷号64期号:4
DOI10.1093/pasj/64.4.84
收录类别SCI
关键词Stars: Binaries: Eclipsing Stars: Binaries: Orbital Period StArs: Individual (Ar Lacertae)
摘要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.
项目资助者Chinese Natural Science Foundations(10878012,11173019,11133007,10903007) ; Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-6264
URL查看原文
WOS记录号WOS:000309296600021
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]RS-CANUM-VENATICORUM ; CLOSE BINARIES ; PHOTOELECTRIC PHOTOMETRY ; SYSTEMS ; LAC ; MODULATION ; CYCLES
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/9432
专题中国科学院天体结构与演化重点实验室
通讯作者Lu, Y (reprint author), Xiangtan Univ, Dept Phys, Xiangtan 411105, Hunan, Peoples R China.
作者单位1.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
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Lu, Ye,Xiang, Fu-Yuan,Shi, Xiao-Min,et al. 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,&Lu, Y .(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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