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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
Source PublicationASTRONOMICAL JOURNAL
2015-03
Volume149Issue:3
DOI10.1088/0004-6256/149/3/111
Contribution Rank第1完成单位
Indexed BySCI
KeywordBinaries: Close Binaries: Eclipsing Stars: Evolution Stars: Individual (2mass 02272637+1156494)
Abstract

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.

Funding ProjectChinese Natural Science Foundation[11103074] ; Chinese Natural Science Foundation[11133007] ; Chinese Natural Science Foundation[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
Funding OrganizationChinese 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
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星天文学 ; 恒星形成与演化
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-6256
URL查看原文
Archive Date2015-07-20
WOS IDWOS:000352304000022
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordMASS ; STARS ; EVOLUTION ; SYSTEMS ; CURVES ; LIGHT ; FIELD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/5921
Collection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
Corresponding AuthorLiu L(刘亮)
Affiliation1.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
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
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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