Photometric Analysis and Period Investigation of the EW Type Eclipsing Binary V441 Lac
Li, K.1,2; Hu, S. -M.1; Guo, D. -F.1; Jiang, Y. -G.2; Gao, D. -Y.1; Chen, X.1; Li, K
发表期刊JOURNAL OF ASTROPHYSICS AND ASTRONOMY
2016-09-01
卷号37期号:3
DOI10.1007/s12036-016-9392-y
收录类别SCI
关键词Stars: Binaries: Close Stars: Binaries: Eclipsing Stars: Individual: V441 Lac
摘要Four color light curves of the EW type eclipsing binary V441 Lac were presented and analyzed by the W-D code. It is found that V441 Lac is an extremely low mass ratio (q = 0.093 +/- 0.001) semi-detached binary with the less massive secondary component filling the inner Roche lobe. Two dark spots on the primary component were introduced to explain the asymmetric light curves. By analyzing all times of light minimum, we determined that the orbital period of V441 Lac is continuously increasing at a rate of dP/dt = 5.874(+/- 0.007) x 10(-7) d yr(-1). The semi-detached Algol type configuration of V441 Lac is possibly formed by a contact configuration destroyed shallow contact binary due to mass transfer from the less massive component to the more massive one predicted by the thermal relaxation oscillation theory.
项目资助者National Natural Science Foundation of China(U1431105) ; Natural Science Foundation of Shandong Province(ZR2014AQ019) ; Young Scholars Program of Shandong University, Weihai ; Open Research Program of Key Laboratory for the Structure and Evolution of Celestial Objects(OP201303)
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0250-6335
URL查看原文
WOS记录号WOS:000384550400001
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]URSAE MAJORIS SYSTEMS ; LIGHT CURVES ; CONTACT ; STARS ; DEEP ; EVOLUTION ; COMPONENT ; CATALOG ; CANCRI ; CYGNI
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/9725
专题中国科学院天体结构与演化重点实验室
通讯作者Li, K
作者单位1.Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space SciencesShandong UniversityWeihaiChina
2.Key Laboratory for the Structure and Evolution of Celestial ObjectsChinese Academy of SciencesKunmingChina
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Li, K.,Hu, S. -M.,Guo, D. -F.,et al. Photometric Analysis and Period Investigation of the EW Type Eclipsing Binary V441 Lac[J]. JOURNAL OF ASTROPHYSICS AND ASTRONOMY,2016,37(3).
APA Li, K..,Hu, S. -M..,Guo, D. -F..,Jiang, Y. -G..,Gao, D. -Y..,...&Li, K.(2016).Photometric Analysis and Period Investigation of the EW Type Eclipsing Binary V441 Lac.JOURNAL OF ASTROPHYSICS AND ASTRONOMY,37(3).
MLA Li, K.,et al."Photometric Analysis and Period Investigation of the EW Type Eclipsing Binary V441 Lac".JOURNAL OF ASTROPHYSICS AND ASTRONOMY 37.3(2016).
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