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We report on 2MASS J01542930+0053266, a faint eclipsing system composed of two M dwarfs. The variability of this system was originally discovered during a pilot study of the 2MASS Calibration Point Source Working Database. Additional…

W UMi is a near contact, semi-detached, double-lined eclipsing binary star with an orbital period of 1.7 days. Simultaneous analysis of new BVR multi-color light curves and radial velocity data yields the main astrophysical parameters of…

Solar and Stellar Astrophysics · Physics 2020-05-06 Faruk Soydugan , Esin Soydugan , Fahri Aliçavuş

Semidetached binaries, distinguished by their mass transfer phase, play a crucial role in elucidating the physics of mass transfer within interacting binary systems. To identify these systems in eclipsing binary light curves provided by…

Solar and Stellar Astrophysics · Physics 2025-04-22 Xu Ding , KaiFan Ji , QiYuan Cheng , ZhiMing Song , JinLiang Wang , XueFen Tian , ChuanJun Wang

We highlight the importance of eclipsing double-line binaries in our understanding on star formation and evolution. We review the recent discoveries of low-mass and sub-stellar eclipsing binaries belonging to star-forming regions, open…

Solar and Stellar Astrophysics · Physics 2021-01-06 Nicolas Lodieu , Ernst Paunzen , Miloslav Zejda

I present a brief summary of three different types of binary star - astrometric, spectroscopic and eclipsing - and tabulate the properties of these systems that can be determined directly from observations. Eclipsing binary stars are the…

Solar and Stellar Astrophysics · Physics 2020-01-08 John Southworth

OO Peg is a detached eclipsing binary system containing two late-A-type stars in a circular orbit with a period of 2.985 d. Using published spectroscopic results and a light curve from the Transiting Exoplanet Survey Satellite (TESS) we…

Solar and Stellar Astrophysics · Physics 2024-04-02 John Southworth

We calculated physical and orbital properties for 2M06464003+0109157, a 1.06 day eclipsing double lined spectroscopic binary. We modelled the system's ASAS-SN and TESS light curves, measuring the system's inclination and radii of each…

Solar and Stellar Astrophysics · Physics 2021-03-31 Annaliese Miller , Marina Kounkel , Chase Boggio , Kevin Covey , Adrian M. Price-Whelan

We present the orbital and physical parameters of a newly discovered low-mass detached eclipsing binary from the All-Sky Automated Survey (ASAS) database: ASAS J011328-3821.1 A - a member of a visual binary system with the secondary…

This study examines the period variation of the eclipsing binary system KR Cyg, a near-contact binary characterized by its short orbital period and significant stellar interactions. The precise orbital parameters of the system have been…

Solar and Stellar Astrophysics · Physics 2025-05-16 Mehmet Geldi , Kübra Çalışkan , Esin Sipahi

The photometric and spectroscopic investigations of ten contact binaries were presented for the first time. It is discovered that the mass ratios of all the ten targets are smaller than 0.15, they are extremely low mass ratio contact…

Solar and Stellar Astrophysics · Physics 2022-10-26 Kai Li , Xiang Gao , Xin-Yi Liu , Xing Gao , Ling-Zhi Li , Xu Chen , Guo-You Sun

The first eclipsing binary pulsar, PSR B1957+20, was discovered in 1987. Since then, 13 other eclipsing low-mass binary pulsars have been found, 12 of these are in globular clusters. In this paper we list the known eclipsing binary pulsars…

Astrophysics · Physics 2016-08-30 Paulo C. C. Freire

We report our discovery of an extremely rare, low mass, quadruple-lined spectroscopic binary BD-22 5866 (=NLTT 53279, integrated spectral type = M0 V), found during an ongoing search for the youngest M dwarfs in the solar neighborhood. From…

We present an analysis of a newly discovered 2+1+1 quadruple system with TESS containing an unresolved eclipsing binary (EB) as part of TIC 121088960 and a close neighbor TIC 121088959. The EB consists of two very low-mass M dwarfs in a…

Multiplicity is ubiquitous among massive stars. While the stellar components usually display similar masses, some binaries with extremely low mass ratios were also observed. Some of them are primordial, while others arise from binary…

Solar and Stellar Astrophysics · Physics 2025-10-28 Yael Naze , Gregor Rauw , Piotr A. Kolaczek-Szymanski , Nikolay Britavskiy , Jonathan Labadie-Bartz

The recently discovered eclipsing binary system TYC 2675-663-1 is a X-ray source, and shows properties in the optical that are similar to the W UMa systems, but are somewhat unusual compared to what is seen in other contact binary systems.…

Solar and Stellar Astrophysics · Physics 2015-05-18 M. D. Caballero-Garcia , G. Torres , I. Ribas , D. Risquez , B. Montesinos , J. M. Mas-Hesse

The period distribution of contact binaries exhibits a very sharp short period cut-off at 0.22 days. In order to provide valuable information on this short period limit, we observed ten totally eclipsing contact binaries with orbital…

Solar and Stellar Astrophysics · Physics 2019-03-20 Kai Li , Qi-Qi Xia , Raul Michel , Shao-Ming Hu , Di-Fu Guo , Xing Gao , Xu Chen , Dong-Yang Gao

We identify $240$ short-period ($P \lesssim 10$ days) binary systems in the TESS data, $180$ of which are heartbeat binaries (HB). The sample is mostly a mix of A and B-type stars and primarily includes eclipsing systems, where over $30\%$…

In this work we report the independent discovery and analysis of nine new compact triply eclipsing triple star systems found with the TESS mission: TICs 47151245, 81525800, 99013269, 229785001, 276162169, 280883908, 294803663, 332521671,…

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
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