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A photometric analysis of the neglected EW-type binary V336 TrA
Kriwattanawong, W.1; Sarotsakulchai, T.2,3,4; Maungkorn, S.1; Reichart, D. E.5; Haislip, J. B.5; Kouprianov, V. V.5; LaCluyze, A. P.5; Moore, J. P.5
Source PublicationNEW ASTRONOMY
Contribution Rank第3完成单位
Indexed BySCI
KeywordStars: Binaries: Close Stars: Binaries: Eclipsing Stars: Individual (V336 Tra)

This study presents an analysis of photometric light curves and absolute parameters for the EW-type binary V336 TrA. VRI imaging observations were taken in 2013 by using the robotic telescopes PROMPT 4 and PROMPT 5 at Cerro Tololo Inter-American Observatory (CTIO), Chile. The observed light curves were fitted by using the Wilson-Devinney method. The results showed that V336 TrA is a W-type contact binary with a mass ratio of q = 1.396. The binary is a weak contact system with a fill-out factor of f = 15.69%. The system contains components with masses of 0.653 M-circle dot and 0.912 M-circle dot for the hotter and the cooler, respectively. The location of the secondary (less massive) component on the log M-log L diagram was found to be near the TAMS. The component has evolved to be oversize and overluminous. The orbital angular momentum of the binary was found to be log J(o) = 51.61 cgs, less than all detached systems for same mass. The system has undergone angular momentum and/or mass loss, during the binary evolution from the detached to contact system.

Funding ProjectChiang Mai University ; NASA grant
Funding OrganizationChiang Mai University ; NASA grant
Subject Area天文学 ; 恒星与银河系
MOST Discipline Catalogue理学 ; 理学::天文学
Publication PlacePO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
WOS IDWOS:000424180000001
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorKriwattanawong, W.
Affiliation1.Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand
2.National Astronomical Research Institute of Thailand, Ministry of Science and Technology, Bangkok, Thailand
3.Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, 650216 Kunming, Republic of China
4.University of Chinese Academy of Sciences, 19 A Yuquan Rd., Shijingshan District, 100049 Beijing, Republic of China
5.Department of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3255, USA
Recommended Citation
GB/T 7714
Kriwattanawong, W.,Sarotsakulchai, T.,Maungkorn, S.,et al. A photometric analysis of the neglected EW-type binary V336 TrA[J]. NEW ASTRONOMY,2018,61:1-4.
APA Kriwattanawong, W..,Sarotsakulchai, T..,Maungkorn, S..,Reichart, D. E..,Haislip, J. B..,...&Moore, J. P..(2018).A photometric analysis of the neglected EW-type binary V336 TrA.NEW ASTRONOMY,61,1-4.
MLA Kriwattanawong, W.,et al."A photometric analysis of the neglected EW-type binary V336 TrA".NEW ASTRONOMY 61(2018):1-4.
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