LUT REVEALS AN ALGOL-TYPE ECLIPSING BINARY WITH THREE ADDITIONAL STELLAR COMPANIONS IN A MULTIPLE SYSTEM

	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
刊名	ASTRONOMICAL JOURNAL
	2016-04-01
卷号	151 期号:4
关键词	binaries: close binaries: eclipsing stars: evolution stars: individual (V548 Cygni)
ISSN号	0004-6256
通讯作者	Zhu, LY
产权排序	第一完成单位
英文摘要	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.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	LIGHT CURVES ; ULTRAVIOLET TELESCOPE ; CONTACT BINARIES ; SHALLOW CONTACT ; STARS ; COMPONENTS ; SEARCH
收录类别	SCI
原文出处	http://iopscience.iop.org/article/10.3847/0004-6256/151/4/107/meta
语种	英语
WOS记录号	WOS:000375609100020
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/9590]
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, 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
推荐引用方式 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).