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FIRST PHOTOMETRIC SOLUTION OF A VERY SHORT PERIOD CONTACT BINARY BELOW THE PERIOD LIMIT
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; Liu, L (reprint author), Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
发表期刊ASTRONOMICAL JOURNAL
2015-03
卷号149期号:3
DOI10.1088/0004-6256/149/3/111
产权排序第1完成单位
收录类别SCI
关键词Binaries: Close Binaries: Eclipsing Stars: Evolution Stars: Individual (2mass 02272637+1156494)
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.
项目资助者Chinese Natural Science Foundation [11103074, 11133007, 11325315] ; Science Foundation of Yunnan Province [2012HC011] ; Strategic Priority Research Program "The Emergence of Cosmological Structures" of the Chinese Academy of sciences [XDB09010202] ; West Light Foundation of the Chinese Academy of Sciences
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-6256
URL查看原文
归档日期2015-07-20
WOS记录号WOS:000352304000022
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]MASS ; STARS ; EVOLUTION ; SYSTEMS ; CURVES ; LIGHT ; FIELD
引用统计
被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/5921
专题双星与变星研究组
中国科学院天体结构与演化重点实验室
通讯作者Liu, L (reprint author), Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
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
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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.,...&Liu, L .(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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