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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
Source PublicationJOURNAL OF ASTROPHYSICS AND ASTRONOMY
2016-09-01
Volume37Issue:3
DOI10.1007/s12036-016-9392-y
Indexed BySCI
KeywordStars: Binaries: Close Stars: Binaries: Eclipsing Stars: Individual: V441 Lac
Abstract

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.

Funding ProjectNational 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]
Funding OrganizationNational 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]
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星天文学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherINDIAN ACAD SCIENCES
Publication PlaceC V RAMAN AVENUE, SADASHIVANAGAR, P B #8005, BANGALORE 560 080, INDIA
ISSN0250-6335
URL查看原文
WOS IDWOS:000384550400001
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordURSAE MAJORIS SYSTEMS ; LIGHT CURVES ; CONTACT ; STARS ; DEEP ; EVOLUTION ; COMPONENT ; CATALOG ; CANCRI ; CYGNI
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Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9725
Collection中国科学院天体结构与演化重点实验室
Corresponding AuthorLi, K.
Affiliation1.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
Recommended Citation
GB/T 7714
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.,&Chen, X..(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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