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Multi-color light curves of V1197 Her were obtained with the 2.4 meter optical telescope at Thai National Observatory and the Wilson-Devinney (W-D) program is used to model the observational light curves. The photometric solutions reveal…

太阳与恒星天体物理 · 物理学 2020-02-05 Xiao Zhou , Boonrucksar Soonthornthum

Multi-color photometric light curves of NO Cam in $V$ $R_C$ and $I_C$ bands are obtained and analyzed simultaneously using the Wilson-Devinney (W-D) program. The solutions suggest that NO Cam is an A-subtype overcontact binary with its mass…

太阳与恒星天体物理 · 物理学 2017-05-17 Xiao Zhou , Shengbang Qian , Bin Zhang

The first photometric analysis of V811 Cep was carried out. The first complete light curves of V, R and I bands are given. The analysis was carried out by Wilson-Devinney (W-D) program, and the results show that V811 Cep is a median-contact…

太阳与恒星天体物理 · 物理学 2021-11-03 Xiang Gao , Kai Li , Xing Gao , Yuan Liu

Orbital period and multi-color light curves' investigation of OW Leo are presented for the first time. The orbital period of OW Leo is corrected from $P = 0.325545$ days to $P = 0.32554052$ days in our work, and the observational data from…

太阳与恒星天体物理 · 物理学 2021-03-31 Xiao Zhou , Shengbang Qian

Four-color charge-coupled device (CCD) light curves in $B$, $V$, $Rc$ and $Ic$ bands of the total-eclipsing binary system, V1853 Ori, are presented. By comparing our light curves with those published by previous investigators, it is…

太阳与恒星天体物理 · 物理学 2019-02-27 Jia-Jia He , Sheng-Bang Qian , B. Soonthornthum , A. Aungwerojwit , Niang-Ping Liu , T. Sarotsakulchai

The light curve of V921 Her in ultraviolet band observed by the Lunar-based Ultraviolet Telescope (LUT) is analyzed by the Wilson-Devinney code. Our solutions conclude that V921 Her is an early type marginal contact binary system with an…

太阳与恒星天体物理 · 物理学 2016-08-03 Xiao Zhou , Sheng-Bang Qian , Jia Zhang , Lin-Jia Li , Qi-Shan Wang

The first four-color light curves of V868 Mon in the $B$ $V$ $R_c$ and $I_c$ bands are presented and analyzed by using the Wilson-Devinney method of the 2013 version. It is discovered that V868 Mon is an A-subtype contact binary…

太阳与恒星天体物理 · 物理学 2016-08-03 Zhou Xiao , Qian Shengbang , He Jiajia , Zhang Jia , Jiang Linqiao

New multi-color light curves of the very short period K-type eclipsing binary V1799 Ori were obtained and analyzed with the W-D code. The photometric solutions reveal that the system is a W-type shallow-contact binary with a mass ratio of…

太阳与恒星天体物理 · 物理学 2015-06-19 Nian-Ping Liu , Sheng-Bang Qian , Wen-Ping Liao , Jia-Jia He , Er-Gang Zhao , Liang Liu

New Multi-color $B$ $V$ $R_c$ $I_c$ photometric observation are presented for W UMa type eclipsing binary V1073 Cyg. The multi-color light curves analysis with the Wilson-Devinney(W-D) procedure acquired the absolute parameters of this…

太阳与恒星天体物理 · 物理学 2018-03-14 Xiao-man Tian , Li-ying Zhu , Sheng-bang Qian , Lin-jia Li , Lin-qiao Jiang

In this paper, CCD photometric light curves for the short-period eclipsing binary 1SWASP J140533.33+114639.1 (hereafter J1405) in the $BVR$ bands are presented and analyzed using the 2013 version of the Wilson-Devinney (W-D) code. It is…

太阳与恒星天体物理 · 物理学 2018-04-04 Bin Zhang , Sheng-bang Qian , R. Michel , B. Soonthornthum , Li-ying Zhu

The first charge-coupled device photometric light curves in B, V, R${_c}$, and I${_c}$ bands of the short-period contact binary star OQ Cam are presented. Through analyzing the light curves with the Wilson-Devinney code, it is found that OQ…

太阳与恒星天体物理 · 物理学 2020-12-02 Ya-Ni Guo , Kai Li , Qi-Qi Xia , Xing Gao , Lin-Qiao Jiang , Yuan Liu

Two sets of light curves in $V$ $R_c$ $I_c$ bands for a newly discovered binary system UCAC4 436-062932 are obtained and analyzed using the Wilson-Devinney (W-D) code. The two sets of light curves get almost consistent results. The…

太阳与恒星天体物理 · 物理学 2016-08-04 X. Zhou , S. -B. Qian , A. Essam , J. -J. He , B. Zhang

The four-color ($B$ $V$ $R_c$ $I_c$) light curves of V776 Cas are presented and analyzed using the Wilson-Devinney (W-D) method. It is discovered that V776 Cas is an early F-type (F2V) overcontact binary with a very high contact degree ($…

太阳与恒星天体物理 · 物理学 2016-08-17 X. Zhou , S. -B. Qian , J. Zhang , L. -Q. Jiang , B. Zhang , J. Kreiner

New CCD photometric observations of the eclipsing binary V566 Oph have been obtained. The light curves are analyzed with the Wilson-Devinney code and new geometric and photometric elements are derived. A new O-C analysis of the system is…

太阳与恒星天体物理 · 物理学 2009-12-21 A. Liakos , S. Varrias , P. Niarchos

We present multi-color CCD photometry of the neglected contact binary XZ Leo. Completely covered VRI band light curves and four times of minimum light were obtained. Combining the photometric and previously published radial velocity data, a…

太阳与恒星天体物理 · 物理学 2015-09-30 Changqing Luo , Xiaobin. Zhang , Licai Deng , Kun Wang , Yangping Luo

In this paper, the first complete photometric light curves in the B, V, and R passbands for an eclipsing binary LO Com are presented, and the photometric solution for the LO Com is derived by analyzing these light curves by using the Wilson…

太阳与恒星天体物理 · 物理学 2017-08-03 Y. Zhang , Q. W. Han , J. Z. Liu

GU Ori was observed with the 1m telescope at Yunnan Observatories in 2005. To determine its physical properties, the Wilson-Devinney program is used. The results reveal that GU Ori is a W-subtype shallow contact binary with a more massive…

Reanalyzing contact binaries with space-based photometric data and investigating possible parameter changes can yield accurate samples for theoretical studies. We investigated light curve solutions and fundamental parameters for twenty…

太阳与恒星天体物理 · 物理学 2024-05-30 Ehsan Paki , Atila Poro

Extreme mass-ratio contact binaries with a high degree of overcontact may be in the late evolutionary stages of the contact phase. Detailed photometric analyses and orbital period studies of those systems can provide invaluable information…

太阳与恒星天体物理 · 物理学 2015-06-12 Eric Broens

KIC 9532219 is a W UMa-type eclipsing binary with an orbital period of 0.1981549 d that is below the short-period limit ($\sim$0.22 d) of the period distribution for contact binaries. The {\it Kepler} light curve of the system exhibits…

太阳与恒星天体物理 · 物理学 2016-03-23 Jae Woo Lee , Kyeongsoo Hong , Jae-Rim Koo , Jang-Ho Park
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