NAOC Open IR
A Photometric Study of the Near Contact Binary UU Lyncis
LiYing Zhu1; ShengBang Qian1; Soonthornthum Boonrucksar2; JiaJia He1; JinZhao Yuan1
2007
Source PublicationChinese Journal of Astronomy and Astrophysics
ISSN1009-9271
Volume7Issue:2Pages:251
AbstractThe near-contact binary UU Lyn with an F3V-type primary was observed in 2005 and 2006. With the latest version of the Wilson-Devinney code, the photometric elements were computed. The results reveal that UU Lyn is a marginal contact system with a large temperature difference of about 1900K between the primary and secondary components.All available eclipse times, including new ones, were used in the analysis. The results show that the orbital period of this system undergoes a continuous decrease at a rate of dP/dt =-1.84 × 10-8 d yr-1. With the period decrease, UU Lyn may evolve from the present short-period marginal contact system into a contact system with true thermal contact. This target might just be undergoing the cycles predicted by the theory of thermal relaxation oscillations (TRO). It is an interesting example resembling BL And, GW Tau, ZZ Aur, KQ Gem, CN And and AD Cnc, that lie in the key evolutionary stage.
Language英语
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/38175
Collection中国科学院国家天文台
Affiliation1.中国科学院国家天文台
2.清迈大学
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
LiYing Zhu,ShengBang Qian,Soonthornthum Boonrucksar,et al. A Photometric Study of the Near Contact Binary UU Lyncis[J]. Chinese Journal of Astronomy and Astrophysics,2007,7(2):251.
APA LiYing Zhu,ShengBang Qian,Soonthornthum Boonrucksar,JiaJia He,&JinZhao Yuan.(2007).A Photometric Study of the Near Contact Binary UU Lyncis.Chinese Journal of Astronomy and Astrophysics,7(2),251.
MLA LiYing Zhu,et al."A Photometric Study of the Near Contact Binary UU Lyncis".Chinese Journal of Astronomy and Astrophysics 7.2(2007):251.
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