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FIRST PHOTOMETRIC SOLUTION OF A VERY SHORT PERIOD CONTACT BINARY BELOW THE PERIOD LIMIT

文献类型：期刊论文

作者Liu L(刘亮)1,2,3; Chen, WP4,5; Qian SB(钱声帮)1,2,3; Chuang, RJ6; Jiang LQ(江林巧)1,2,3; Lin, CS7; Hsiao, HY7
刊名ASTRONOMICAL JOURNAL
出版日期2015-03
卷号149期号:3
关键词binaries: close binaries: eclipsing stars: evolution stars: individual (2MASS 02272637+1156494)
ISSN号0004-6256
产权排序第一完成单位
通讯作者Liu, L (reprint author), Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
英文摘要The star 1SWASP J022727.03+115641.7 was reported as a contact binary with a period shorter than the empirical limit of such systems. Our study shows the star not to be variable. Instead, it is the nearby star, 2MASS 02272637 +1156494, that exhibits variability. The BRI CCD light curves of 2MASS 02272637+1156494 show the system to be a moderate mass ratio (2.154(-0.008)(+0.074)), and shallow contact (10.4(-1.9)(+1.4)%) W-type contact binary. The masses, radii, and luminosities of the binary components are, respectively, M-1 = 0.25(-0.01)(+0.05), M-circle dot, M-2 = 0.54(-0.04)(+0.11) M-circle dot, R-1 = 0.45(-0.01)(+0.02) R-circle dot, R-2 = 0.063(-0.02)(+0.04) R-circle dot, L-1 = 0.038(-0.005)(+0.018) L-circle dot, and L-2 = 0.071(-0.010)(+0.037) L-circle dot, with an estimated distance 326(-46)(+127) pc. These uncertainties mainly come from the errors of the colors used to estimate the temperature of the primary star. A dark spot was introduced on the massive component in the final solution.
WOS标题词Science & Technology ; Physical Sciences
学科主题Astronomy & Astrophysics
类目[WOS]Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics
关键词[WOS]MASS ; STARS ; EVOLUTION ; SYSTEMS ; CURVES ; LIGHT ; FIELD
收录类别SCI
原文出处http://iopscience.iop.org/article/10.1088/0004-6256/149/3/111/meta
语种英语
WOS记录号WOS:000352304000022
源URL[http://ir.ynao.ac.cn/handle/114a53/5921]  
专题云南天文台_双星与变星研究组
云南天文台_中国科学院天体结构与演化重点实验室
作者单位1.Yunnan Observatories, Chinese Academy of Sciences (CAS), P.O. Box 110, 650011 Kunming, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650011 Kunming, China
3.University of the Chinese Academy of Sciences, Yuquan Road 19#, Sijingshang Block, 100049 Beijing, China
4.Graduate Institute of Astronomy, National Central University, Taiwan
5.Department of Physics, National Central University, Taiwan
6.Department of Statistics & Information, Fu-Jen University, Taiwan, ROC.
7.Lulin Observatory, National Central University, Taiwan
推荐引用方式
GB/T 7714		 Liu L,Chen, WP,Qian SB,et al. FIRST PHOTOMETRIC SOLUTION OF A VERY SHORT PERIOD CONTACT BINARY BELOW THE PERIOD LIMIT[J]. ASTRONOMICAL JOURNAL,2015,149(3).
APA Liu L.,Chen, WP.,Qian SB.,Chuang, RJ.,Jiang LQ.,...&Hsiao, HY.(2015).FIRST PHOTOMETRIC SOLUTION OF A VERY SHORT PERIOD CONTACT BINARY BELOW THE PERIOD LIMIT.ASTRONOMICAL JOURNAL,149(3).
MLA Liu L,et al."FIRST PHOTOMETRIC SOLUTION OF A VERY SHORT PERIOD CONTACT BINARY BELOW THE PERIOD LIMIT".ASTRONOMICAL JOURNAL 149.3(2015).

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来源：云南天文台

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