CCD Photometry of the W UMa type star QX Andromeda

	CCD Photometry of the W UMa type star QX Andromeda
	Ren, A. B.1; Zhang, X. B.2; Luo, C. Q.3; Luo, Y. P.3; Deng, L. C.2; Luo, Z. Q.1
刊名	NEW ASTRONOMY
	2011-04-01
卷号	16 期号:3 页码:194-198
关键词	Binaries: close Binaries: eclipsing Open cluster and associations: individual (NGC 752) Stars: evolution Stars individual (QX Andromeda)
英文摘要	We present new B- and V-band photometry of the W UMa-type binary system QX And, which is a member of the open cluster NGC 752. Revised orbital period and new ephemerides were given for the binary system based on the data of times of light minima. The result of a period analysis reveals that the system is undergoing a continuous orbital period increase during the past decades. The rate of period increasing turns out to be about 2.7 x 10(-7) d yr(-1). With the Wilson-Devinney code, a photometric solution is computed. It yields a contact configuration for the system with a filling factor of 0.361. Combining the results from the photometric solution along with that from the radial-velocity observations, we have determined the absolute parameters for the two components of the system. The masses, radii and luminosity of the primary and secondary stars are calculated as 1.43 +/- 0.04 M(circle dot) 1.45 +/- 0.09 R(circle dot), 2.87 +/- 0.40 L(circle dot) and 0.44 +/- 0.02 M(circle dot), 0.87 +/- 0.05 R(circle dot), 0.99 +/- 0.13 L(circle dot), respectively. The evolutionary status and physical nature of the contact binary system were discussed compared with the theoretical models. (C) 2010 Elsevier RV. All rights reserved.
收录类别	SCI
语种	英语
WOS记录号	WOS:000285660400010
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/8031]
专题	国家天文台_光学天文研究部
作者单位	1.China W Normal Univ, Inst Theoret Phys, Nanchong 637002, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China
推荐引用方式 GB/T 7714	Ren, A. B.,Zhang, X. B.,Luo, C. Q.,et al. CCD Photometry of the W UMa type star QX Andromeda[J]. NEW ASTRONOMY,2011,16(3):194-198.
APA	Ren, A. B.,Zhang, X. B.,Luo, C. Q.,Luo, Y. P.,Deng, L. C.,&Luo, Z. Q..(2011).CCD Photometry of the W UMa type star QX Andromeda.NEW ASTRONOMY,16(3),194-198.
MLA	Ren, A. B.,et al."CCD Photometry of the W UMa type star QX Andromeda".NEW ASTRONOMY 16.3(2011):194-198.