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The $B$ $V$ $R_c$ $I_c$ bands light curves of the newly discovered binary system \astrobj{GSC 03122-02426} are obtained and analyzed using the Wilson-Devinney (W-D) code. The solutions suggest that the mass ratio of the binary system is $q…

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

We present a detailed V-band photometric light curve modeling of 30 eclipsing binaries using the data from Pietrukowicz et al. (2009) collected with the European Southern Observatory Very Large Telescope (ESO VLT) of diameter 8-m. The light…

Photometric observations for the totally eclipsing binary system TYC 4002-2628-1, were obtained between November 2020 and November 2021. To determine the stellar atmospheric parameters, a spectral image was taken with the 2.16 m telescope…

太阳与恒星天体物理 · 物理学 2022-10-03 Di-Fu. Guo , Kai Li , 1 Fen Liu , Huai-Zhen Li Qi-Qi Xia , Xing Gao , Xiang Gao , Xu Chen , Dong-Yang Gao , Guo-You Sun

We present a new study of the Algol-type eclipsing binary system AS Eri based on the combination of the MOST and TESS light curves and a collection of very precise radial velocities obtained with the spectrographs HERMES operating at the…

太阳与恒星天体物理 · 物理学 2022-02-04 P. Lampens , D. Mkrtichian , H. Lehmann , K. Gunsriwiwat , L. Vermeylen , J. Matthews , R. Kuschnig

This paper presents the first analysis of the contact binary TYC 3801-1529-1. We observed four sets of multiple bands complete light curves and one set of radial velocity curve of the primary component. Based on a simultaneous investigation…

太阳与恒星天体物理 · 物理学 2024-12-04 Kai Li , Xiang Gao , Di-Fu Guo , Dong-Yang Gao , Xu Chen , Li-Heng Wang , Yu-Xin Xin , Yu-Xin Han , Chun-Hwey Kim , Min-Ji Jeong

We present the first BVR photometry, period variation, and photometric light-curve analysis of two poorly studied eclipsing binaries V1321 Cyg and CR Tau. Observations were carried out from November 2017 to January 2020 at the observatory…

太阳与恒星天体物理 · 物理学 2021-09-08 V. Kudak , M. Fedurco , V. Perig , Š. Parimucha

Using the data from the public database of the All Sky Automated Survey ({\tt ASAS}) we performed the very first light curve analyses of the three eclipsing binary systems \astrobj{AO~Aqr}, \astrobj{CW~Aqr} and \astrobj{ASAS~012206-4924.7}.…

太阳与恒星天体物理 · 物理学 2015-05-15 Burak Ulas , Ceren Ulusoy

New high-resolution spectra, of the chromospherically active binary system CF Tuc, taken at the Mt. John University Observatory in 2007, were analyzed using two methods: cross-correlation and Fourier--based disentangling. As a result, new…

太阳与恒星天体物理 · 物理学 2015-05-13 D. Dogru , A. Erdem , S. S. Dogru , S. Zola

We present the discovery of \thisstar\ (HD 58730), a very low mass ratio ($q \equiv M_2/M_1 \approx 0.07$) eclipsing binary (EB) identified by the Kilodegree Extremely Little Telescope (KELT) survey. We present the discovery light curve and…

This study presented a new analysis for the TESS-observed W Ursae Majoris (W UMa) binary star YY Coronea Borealis (YY CrB). The light curve was analyzed by the PHysics Of Eclipsing BinariEs (PHOEBE) Python version together with the Markov…

太阳与恒星天体物理 · 物理学 2023-08-21 Somayeh Soomandar , Atila Poro

EL CVn-type eclipsing binaries are composed of a massive A-type main-sequence primary star and a hotter B-type secondary star. This paper presents the time-series photometric and asteroseismic results of the EL CVn-type star 1SWASP…

太阳与恒星天体物理 · 物理学 2021-11-03 Seung-Lee Kim , Jae Woo Lee , Chung-Uk Lee , Yongseok Lee , Dong-Joo Lee , Kyeongsoo Hong , Sang-Mok Cha , Dong-Jin Kim , Byeong-Gon Park

Very high quality light curves are now available for thousands of detached eclipsing binary stars and transiting exoplanet systems as a result of surveys for transiting exoplanets and other large-scale photometric surveys. I have developed…

天体物理仪器与方法 · 物理学 2016-06-22 P. F. L. Maxted

The study presents photometric analysis of the completely eclipsing contact binary systems TYC 8351-1081-1 and ASAS J210406-0522.3. TYC 8351-1081-1 is an extremely low mass ratio (q=0.086) system with high degree of contact (f=0.66) while…

太阳与恒星天体物理 · 物理学 2022-07-27 Surjit S. Wadhwa , Ain Y. De Horta , Miroslav D. Filipovic , Nick F. H. Tothill

The photometric analysis and spectroscopic study of the long period low mass ratio deep contact binary KN Per were executed. The light curves of BV(RI)$_c$-band were from the Ningbo Bureau of Education and Xinjiang Observatory Telescope…

太阳与恒星天体物理 · 物理学 2022-12-07 Xin-Yi Gao , Kai Li , Ya-Wen Cai , Ya-Ni Guo , Xing Gao , Xi Wang , Shi-Peng Yin , Fei Liu , Guo-You Sun

EL CVn-type systems represent a rare evolutionary stage in binary star evolution, providing ideal laboratories for investigating stable mass transfer processes and the formation of extremely low-mass white dwarfs (ELM WDs). The Transiting…

太阳与恒星天体物理 · 物理学 2024-12-13 Jianping Xiong , Zhenwei Li , Jiao Li , Xiaobin Zhang , Xiaodian Chen , Kaifan Ji , Zhanwen Han , Xuefei Chen

We present first results of a comprehensive photometric O-star survey performed with a robotic twin refractor at the Universit\"atssternwarte Bochum located near Cerro Armazones in Chile. For three high-mass stars, namely Pismis24-1,…

太阳与恒星天体物理 · 物理学 2015-06-16 A. Barr Domínguez , R. Chini , F. Pozo Nuñez , M. Haas , M. Hackstein , H. Drass , R. Lemke , M. Murphy

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

In the first paper of this series we presented EBAS, a new fully automated algorithm to analyse the lightcurves of eclipsing binaries, based on the EBOP code. Here we apply the new algorithm to the whole sample of 2580 binaries found in the…

天体物理学 · 物理学 2009-11-11 Tsevi Mazeh , Omer Tamuz , Pierre North

We present the physical parameters of an eclipsing binary system EPIC 211982753 derived through photometric and radial velocity data modeling. We make use of photometric data from NASA's K2 mission, ASAS-SN, and 1.3-m Devasthal Fast Optical…

太阳与恒星天体物理 · 物理学 2023-08-23 Alaxender Panchal , Yogesh C. Joshi

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