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LUT REVEALS AN ALGOL-TYPE ECLIPSING BINARY WITH THREE ADDITIONAL STELLAR COMPANIONS IN A MULTIPLE SYSTEM
Zhu LY(朱俐颖)1,2,3; Zhou X(周肖)1,2,3; Hu, J. -Y.4; Qian SB(钱声帮)1,2,3; Li LJ(李临甲)1,2; Liao WP(廖文萍)1,2; Tian XM(田晓慢)1,2,3; Wang ZH(王志华)1,2,3
Source PublicationASTRONOMICAL JOURNAL
2016-04-01
Volume151Issue:4
DOI10.3847/0004-6256/151/4/107
Contribution Rank第1完成单位
Indexed BySCI
KeywordBinaries: Close Binaries: Eclipsing Stars: Evolution Stars: Individual (V548 Cygni)
Abstract

A complete light curve of the neglected eclipsing binary Algol V548 Cygni in the UV band was obtained with the Lunar-based Ultraviolet Telescope in 2014 May. Photometric solutions are obtained using the Wilson-Devinney method. It is found that solutions with and without third light are quite different. The mass ratio without third light is determined to be q = 0.307, while that derived with third light is q = 0.606. It is shown that V548 Cygni is a semi-detached binary where the secondary component is filling the critical Roche lobe. An analysis of all available eclipse times suggests that there are three cyclic variations in the O-C diagram that are interpreted by the light travel-time effect via the presence of three additional stellar companions. This is in agreement with the presence of a large quantity of third light in the system. The masses of these companions are estimated as m sin i' similar to 1.09, 0.20, and 0.52 M-circle dot. They are orbiting the central binary with orbital periods of about 5.5, 23.3, and 69.9 years, i.e., in 1: 4: 12 resonance orbit. Their orbital separations are about 4.5, 13.2, and 26.4 au, respectively. Our photometric solutions suggest that they contribute about 32.4% to the total light of the multiple system. No obvious long-term changes in the orbital period were found, indicating that the contributions of the mass transfer and the mass loss due to magnetic braking to the period variations are comparable. The detection of three possible additional stellar components orbiting a typical Algol in a multiple system make V548 Cygni a very interesting binary to study in the future.

Funding ProjectChinese Natural Science Foundation[11133007] ; Chinese Natural Science Foundation[11325315] ; Chinese Natural Science Foundation[11573063] ; Key Research Program of the Chinese Academy of Sciences[KGZD-EW-603] ; Science Foundation of Yunnan Province[2013FB084] ; Strategic Priority Research Program "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences[XDB09010202]
Funding OrganizationChinese Natural Science Foundation[11133007, 11325315, 11573063] ; Key Research Program of the Chinese Academy of Sciences[KGZD-EW-603] ; Science Foundation of Yunnan Province[2013FB084] ; Strategic Priority Research Program "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences[XDB09010202]
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 Date2016-05-11
WOS IDWOS:000375609100020
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordLIGHT CURVES ; ULTRAVIOLET TELESCOPE ; CONTACT BINARIES ; SHALLOW CONTACT ; STARS ; COMPONENTS ; SEARCH
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9590
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 AuthorZhu LY(朱俐颖)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences (CAS), P.O. Box 110, 650011 Kunming, P. R. China
2.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, P. R. China
3.University of the Chinese Academy of Sciences, Yuquan Road 19#, Sijingshang Block, 100049 Beijing, P. R. China
4.National Astronomical Observatories, Chinese Academy of Sciences, 100012 Beijing, P. R. China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhu LY,Zhou X,Hu, J. -Y.,et al. LUT REVEALS AN ALGOL-TYPE ECLIPSING BINARY WITH THREE ADDITIONAL STELLAR COMPANIONS IN A MULTIPLE SYSTEM[J]. ASTRONOMICAL JOURNAL,2016,151(4).
APA Zhu LY.,Zhou X.,Hu, J. -Y..,Qian SB.,Li LJ.,...&Wang ZH.(2016).LUT REVEALS AN ALGOL-TYPE ECLIPSING BINARY WITH THREE ADDITIONAL STELLAR COMPANIONS IN A MULTIPLE SYSTEM.ASTRONOMICAL JOURNAL,151(4).
MLA Zhu LY,et al."LUT REVEALS AN ALGOL-TYPE ECLIPSING BINARY WITH THREE ADDITIONAL STELLAR COMPANIONS IN A MULTIPLE SYSTEM".ASTRONOMICAL JOURNAL 151.4(2016).
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