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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 high-precision, detailed photometric analysis of four W Ursae Majoris (W UMa)-type contact binaries, Linear 10772300, Linear 11150338, Linear 20372537 and DM Cir. In addition to ground-based multiband photometric…

Solar and Stellar Astrophysics · Physics 2026-02-16 Elham Sarvari , Atila Poro , Raul Michel , Anna Francesca Pala , Mehmet Tanriver , Ahmet Bulut , Ahmet Keskin , Mark G. Blackford

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

In this work, we present a detailed investigation of five contact binary systems of the W Ursae Majoris (W UMa) type. Multiband photometric observations were conducted using ground-based telescopes in both the northern and southern…

This study broadens our comprehensive investigation of total-eclipse W Ursae Majoris-type contact binaries by analyzing eight additional systems, continuing our previous research. Multiband $BVR_cI_c$ photometric data were obtained at an…

Solar and Stellar Astrophysics · Physics 2025-11-25 Atila Poro , Raul Michel , Francisco Javier Tamayo , Mahya Hedayatjoo , Hector Aceves , Fahri Alicavus

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…

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

We present a comprehensive photometric light curve and orbital period analysis of the W UMa-type contact binary EM Tuc. The O-C analysis constructed from all available eclipse timings exhibits a clear upward parabolic trend, indicating a…

Solar and Stellar Astrophysics · Physics 2025-12-01 Sepideh Houshiar , Atila Poro , Abbas Abedini , Eduardo Fernández Lajús

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

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…

The advent of large-scale photometric surveys has led to the discovery of over a million contact binary systems. Conventional light curve analysis methods are no longer adequate for handling such massive datasets. To address this challenge,…

Solar and Stellar Astrophysics · Physics 2025-09-11 Kai Li , Li-Heng Wang , Xiang Gao

We present the results of our study of the eclipsing binary systems CSS J112237.1+395219, LINEAR 1286561 and LINEAR 2602707 based on new CCD $B$, $V$, $R_c$ and $I_c$ complete light curves. The ultra-short period nature of the stars…

Solar and Stellar Astrophysics · Physics 2020-05-06 F. Acerbi , R. Michel , C. Barani , M. Martignoni , L. Fox-Machado

Multiband photometric investigations for eight binary systems of the W Ursae Majoris (W UMa)-type are presented. Six systems are presented for the first time to analyze their light curves. All the analyzed systems have a temperature below…

Solar and Stellar Astrophysics · Physics 2024-01-19 Atila Poro , Mehmet Tanriver , Raul Michel , Ehsan Paki

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

We conducted the first light curve study of the binary star EL Tuc within the Binary Systems of South and North (BSN) Project framework. The photometric observations were made using standard multiband BVRI filters at an observatory in…

Solar and Stellar Astrophysics · Physics 2024-09-02 Elham Sarvari , Eduardo Fernández Lajús , Atila Poro

With the continuous development of large optical surveys, a large number of light curves of late-type contact binary systems (CBs) have been released. Deriving parameters for CBs using the the WD program and the PHOEBE program poses a…

Instrumentation and Methods for Astrophysics · Physics 2024-08-12 JinLiang Wang , Xu Ding , JiaJia Li , JianPing Xiong , Qiyuan Cheng , KaiFan Ji

This study continues our in-depth investigation of total-eclipse W Ursae Majoris-type contact binaries by analyzing eight new systems, complementing our previous work. Multiband $BVR_cI_c$ photometric data were acquired through ground-based…

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

We performed the first photometric study of the CSS J003106.8+313347 W Ursae Majoris (W UMa)-type system based on ground-based observations. We extracted times of minima from our observations and proposed a linear ephemeris based on the…

Solar and Stellar Astrophysics · Physics 2023-07-31 Ehsan Paki , Sabrina Baudart , Atila Poro
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