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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
2011-04-01
发表期刊NEW ASTRONOMY
卷号16期号:3页码:194-198
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.
关键词Binaries: Close Binaries: Eclipsing Open Cluster And Associations: Individual (Ngc 752) Stars: Evolution Stars Individual (Qx Andromeda)
DOI10.1016/j.newast.2010.08.007
收录类别SCI
语种英语
WOS记录号WOS:000285660400010
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被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8031
专题光学天文研究部
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
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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.
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