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Photometric data were used to perform the first light curve analysis of the V0610 Vir binary system. Observations and analysis were done in the form of the Binary Systems of South and North (BSN) Project. We extracted the minima from our…

Solar and Stellar Astrophysics · Physics 2024-02-26 Ailar Alizadehsabegh , František Lomoz , Atila Poro , Ata Narimani

Here we present the observations and the first light curve analysis of the short-period variable star NSVS 2983201. Using the light curve numerical modeling we find the best fitting model to be of shallow (ff=10%) contact binary…

Solar and Stellar Astrophysics · Physics 2023-01-02 B. Debski , K. Walczak

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…

Solar and Stellar Astrophysics · Physics 2024-05-30 Ehsan Paki , Atila Poro

This study presented the first light curve analysis of the OP Boo and V0511 Cam binary stars, which was conducted in the frame of the Binary Systems of South and North (BSN) Project. Photometric ground-based observations were conducted with…

We presented the first photometric analysis of the V1961 Cyg and V0890 Lyr binary systems. We observed and analyzed these systems at an observatory in France as part of the Binary Systems of South and North (BSN) Project. We extracted and…

Solar and Stellar Astrophysics · Physics 2024-11-05 Sabrina Baudart , Atila Poro

We present the TESS and BVRcIc light curves solution of four low mass-ratio contact binary systems TIC 159102550), V1068 Her, MW Pav and TIC 321576458. Except MW Pav, all three systems have been studied for the first time. The period…

Solar and Stellar Astrophysics · Physics 2024-06-11 Ahmed Waqas Zubairi , Zhao Ergang , Qian Shengbang , Zhou Xiao , Eduardo Fernández Lajús

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…

Solar and Stellar Astrophysics · Physics 2016-08-03 Xiao Zhou , Sheng-Bang Qian , Jia Zhang , Lin-Jia Li , Qi-Shan Wang

The first multiband photometric solutions of the short-period V Gru eclipsing binary from the southern hemisphere is presented in this study. Light curves of the system were observed through BVI filters at the Congarinni Observatory in…

Solar and Stellar Astrophysics · Physics 2023-04-26 Mehmet Tanriver , Atila Poro , Ahmet Bulut , Ahmet Keskin , Mark G. Blackford

The light curve analyses and orbital period variations for two contact binary stars, LS Del and V997 Cyg, were presented in this work which was conducted in the frame of the Binary Systems of South and North (BSN) Project. Ground-based…

We performed photometric and spectroscopic studies of three large amplitude contact binaries, NSVS 2418361, ATLAS J057.1170+31.2384 and NSVS 7377875. The amplitudes of three systems' light curves are more than 0.7 magnitude. We analyzed the…

Solar and Stellar Astrophysics · Physics 2024-12-03 Xin Xu , Kai Li , Fei Liu , Qian-Xue Yan , Yi-Fan Wang , Xin-Yu Cui , Jing-Yi Wang , Xing Gao , Guo-You Sun , Cheng-Yu Wu , Mu-Zi-Mei Li

The first multi-color light curve analysis of the AH Mic binary system is presented. This system has very few past observations from the southern hemisphere. We extracted the minima times from the light curves based on the Markov Chain…

Totally eclipsing contact binaries provide a unique opportunity to accurately determine mass ratios through photometric methods alone, eliminating the need for spectroscopic data. Studying low mass ratio (LMR) contact binaries is crucial…

Solar and Stellar Astrophysics · Physics 2025-07-17 Xu Ding , KaiFan Ji , ZhiMing Song , XueFen Tian , JinLiang Wang , ChuanJun Wang , QiYuan Cheng , JianPing Xiong

Here we report our study on a low-mass ratio contact binary system NSVS 3198272. We subjected our multi-filter ground-based photometry to the light curve numerical modeling using a modified Wilson-Devinney code. We present three scenarios…

Solar and Stellar Astrophysics · Physics 2024-10-29 B. Debski , K. Wysocka , W. Skrobacz

Photometric observations in V and I bands of six eclipsing binaries at the lower limit of the orbital periods of W UMa stars are presented. Three of them are newly discovered eclipsing systems. The light curve solutions revealed that all…

Solar and Stellar Astrophysics · Physics 2015-09-16 Diana P. Kjurkchieva , Dinko P. Dimitrov , Sunay I. Ibryamov

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…

Solar and Stellar Astrophysics · Physics 2019-02-27 Jia-Jia He , Sheng-Bang Qian , B. Soonthornthum , A. Aungwerojwit , Niang-Ping Liu , T. Sarotsakulchai

The first light curve solutions of the stars EW and HN in Pisces constellation are presented. Photometry, and its' periodic changes are calculated and discussed. The analysis of O-C diagram done by MCMC approach in OCFit code and the new…

The short-period AP Dor eclipsing binary's first in-depth and multiband photometric solutions are presented. We made use of our eight nights of ground-based at a southern hemisphere observatory, and twelve sectors of TESS observations. We…

We presented the first photometric light curve solutions of four W Ursae Majoris (W UMa)-type contact binary systems. This investigation utilized photometric data from the Transiting Exoplanet Survey Satellite (TESS) and Gaia Data Release 3…

Solar and Stellar Astrophysics · Physics 2025-02-20 Atila Poro , Razieh Aliakbari , Hossein Azarara , Asma Ababafi , Sadegh Nasirian

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…

Solar and Stellar Astrophysics · Physics 2020-02-05 Xiao Zhou , Boonrucksar Soonthornthum

This study provides the first comprehensive analysis of eight total-eclipse W Ursae Majoris-type contact binary systems. Ground-based photometric multiband observations were conducted at a Mexican observatory, and new times of minima were…

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