PHOTOMETRIC PROPERTIES OF SELECTED ALGOL-TYPE BINARIES. IX. V548 CYGNI

	PHOTOMETRIC PROPERTIES OF SELECTED ALGOL-TYPE BINARIES. IX. V548 CYGNI
	Yang, Yuan-Gui 1,2; Wu, Chao2 ; Van Hamme, W.3; Hu, J. -Y.2; Wei, J-Y.2
刊名	ASTRONOMICAL JOURNAL
	2016-08-01
卷号	152 期号:2
关键词	binaries: eclipsing binaries: spectroscopic stars: individual (V548 Cyg)
英文摘要	We present a new UV light curve of the Algol eclipsing binary V548. Cyg obtained with the Lunar Ultraviolet Telescope. We model the UV light curve together with two previously published (B and V) light curves, primary star radial velocities, and eclipse timings in a unified multi-data-type solution and determine orbital parameters and absolute dimensions. Timing residuals hint at the presence of a third star in the system. This star is possibly the source of the third light that is needed to obtain a good fit to each of the light curves simultaneously. The light-time oscillation in the timing residuals has a period of either approximate to 19 or approximate to 46 years. The third body orbit inclination would have to be low (23 degrees or 15 degrees, respectively) for the third star to have a mass of approximate to 1.5 M-circle dot, which would be expected for a main-sequence star of color B - V approximate to 0.32, as determined from the light curve solution. In an H-R diagram, the mass-gaining, primary component of V548 Cyg is located between the zero-age and terminal-age main sequence for solar composition stars, and close to the 0.4 Gyr isochrone.
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 ; VELOCITY CURVES ; SPACED DATA ; STAR LIGHT ; PERIOD ; SYSTEM
收录类别	SCI
语种	英语
WOS记录号	WOS:000381817500022
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/5272]
专题	国家天文台_空间科学研究部
作者单位	1.Huaibei Normal Univ, Informat Coll, Sch Phys & Elect Informat, Huaibei 235000, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Key Lab Space Astron & Technol, Beijing 100012, Peoples R China 3.Florida Int Univ, Dept Phys, Miami, FL 33199 USA
推荐引用方式 GB/T 7714	Yang, Yuan-Gui,Wu, Chao,Van Hamme, W.,et al. PHOTOMETRIC PROPERTIES OF SELECTED ALGOL-TYPE BINARIES. IX. V548 CYGNI[J]. ASTRONOMICAL JOURNAL,2016,152(2).
APA	Yang, Yuan-Gui,Wu, Chao,Van Hamme, W.,Hu, J. -Y.,&Wei, J-Y..(2016).PHOTOMETRIC PROPERTIES OF SELECTED ALGOL-TYPE BINARIES. IX. V548 CYGNI.ASTRONOMICAL JOURNAL,152(2).
MLA	Yang, Yuan-Gui,et al."PHOTOMETRIC PROPERTIES OF SELECTED ALGOL-TYPE BINARIES. IX. V548 CYGNI".ASTRONOMICAL JOURNAL 152.2(2016).