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Pulsations and binarity are both common features of massive stars. The study of pulsating massive stars in eclipsing binary systems hold great potential for constraining stellar structure and evolution theory. However, prior to the all-sky…

Solar and Stellar Astrophysics · Physics 2022-04-13 John Southworth , Dominic M. Bowman

We present the results of our study of the long-period eclipsing binary star \Aur. The results are based on spectroscopic data obtained with the UFES \'echelle spectrograph and photometric observations from TESS. The derived radial velocity…

Solar and Stellar Astrophysics · Physics 2025-04-10 Kniazev Alexei , Malkov Oleg , Gorda Stanislav , Berdnikov Leonid , Katkov Ivan

We present the results of a multi-site photometric campaign carried out in 2004-2008 for the Algol-type eclipsing binary system CT Her, the primary component of which shows Delta Scuti-type oscillations. Our data consist of differential…

We describe the discovery of a 0.68+0.52 solar mass eclipsing binary (EB) with an 8.4-day orbital period, found through a systematic search of ten fields of the Trans-atlantic Exoplanet Survey (TrES). Such long-period low-mass EBs…

Eclipsing binary systems hold a central position within astrophysics in that the fundamental parameters of stars can be determined by direct observations. The simultaneous analyses of high-quality space observations, combined with…

Solar and Stellar Astrophysics · Physics 2023-10-25 Neslihan Alan

In this paper, we present a detailed analysis of the light variation of KIC 5623923 using high-precision time-series data from the $Kepler$ mission. The analysis reveals this target is an eclipsing binary system with $\delta$ Scuti type…

Solar and Stellar Astrophysics · Physics 2025-11-26 Tao-Zhi Yang , Zhao-Yu Zuo , Shi-ping Guo , Xu Ding , Hao-zhi Wang , Shahidin Yaqup , Ali Esamdin

Times of minima of eclipsing binary KIC 7023917 show quasiperiodic anti-symmetric deviations from the calculated one with an amplitude of up to 10 minutes and a period of 200 - 300 days. These changes correlate with the observed variations…

Solar and Stellar Astrophysics · Physics 2024-09-24 Pavol Gajdoš , Štefan Parimucha , Marek Skarka , Matúš Kamenec , Jozef Lipták , Raine Karjalainen

We present a photometric, spectroscopic, asteroseismic, and evolutionary analysis of the Algol-type eclipsing binary KIC 12268220. We find the O'Connell effect and anticorrelated eclipse timing variations in the Kepler light curve,…

Solar and Stellar Astrophysics · Physics 2020-08-12 Kaiming Cui , Zhao Guo , Qing Gao , Juanjuan Ren , Junbo Zhang , Yutao Zhou , Jifeng Liu

AI Hya has been known as an eclipsing binary with a monoperiodic $\delta$ Sct pulsator. We present the results from its {\it TESS} photometry observed during Sector 7. Including our five minimum epochs, the eclipse timing diagram displays…

Solar and Stellar Astrophysics · Physics 2020-05-06 Jae Woo Lee , Kyeongsoo Hong , Martti H. Kristiansen

Y Cam is classified as one of the oscillating Eclipsing Algol (oEA) systems, which feature a $\delta$ Scuti-type pulsating component alongside mass transfer phenomena. oEA systems are invaluable for probing the evolutionary processes and…

Solar and Stellar Astrophysics · Physics 2024-05-13 Eda Celik , Filiz Kahraman Alicavus

We present TESS photometry of the triple star system V1031 Ori (AB)C, which exhibits short-period oscillations superimposed on an eclipsing light curve. The high-quality data were analyzed in detail and combined with the published…

Solar and Stellar Astrophysics · Physics 2021-07-07 Jae Woo Lee

ASAS photometric observations of LS 1135, an O-type SB1 binary system with an orbital period of 2.7 days, show that the system is also eclipsing. This prompted us to re-examine the spectra used in the previously published spectroscopic…

Astrophysics · Physics 2009-11-11 E. Fernandez Lajus , V. S. Niemela;

We present a detailed study of the F-type detached eclipsing binary BK Peg, based on new photometric and spectroscopic observations. The two components, which have evolved to the upper half of the main-sequence band, are quite different…

Solar and Stellar Astrophysics · Physics 2015-05-18 J. V. Clausen , S. Frandsen , H. Bruntt , E. H. Olsen , B. E. Helt , K. Gregersen , D. Juncher , P. Krogstrup

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…

Abridged. Eclipsing spectroscopic double-lined binaries are the prime source of precise and accurate measurements of masses and radii of stars. These measurements provide a stringent test of models of stellar evolution that are persistently…

Solar and Stellar Astrophysics · Physics 2023-12-22 A. Tkachenko , K. Pavlovski , N. Serebriakova , D. M. Bowman , L. IJspeert , S. Gebruers , J. Southworth

MU Cas is a detached eclipsing binary containing two B5 V stars in an orbit of period 9.653 d and eccentricity 0.192, which has been observed in seven sectors using the Transiting Exoplanet Survey Satellite (TESS). We use these new light…

Solar and Stellar Astrophysics · Physics 2024-10-31 John Southworth

In this paper, we present the results of a comprehensive study of six eclipsing binaries whose components are confirmed or suspected Am stars. By combining long-term high-resolution CAOS spectroscopy and TESS photometry we have been able to…

Solar and Stellar Astrophysics · Physics 2024-02-27 G. Catanzaro , A. Frasca , J. Alonso-Santiago , C. Colombo

Eclipsing binaries are crucial for understanding stellar physics, allowing detailed studies of stellar masses, radii, and orbital dynamics. Recent space missions like the Transiting Exoplanet Survey Satellite (TESS) have significantly…

Solar and Stellar Astrophysics · Physics 2024-11-20 L. W. IJspeert , A. Tkachenko , C. Johnston , C. Aerts

Extreme eclipsing binaries may harbor peculiar physical properties. In this work, we aim to identify a sample of such systems by selecting binaries with pronounced eclipsing light curves, characterized of large variability ($\Delta…

Solar and Stellar Astrophysics · Physics 2025-04-16 Jiangxinxin Zhuang , Zhi-Xiang Zhang , Wei-Min Gu , Senyu Qi

We present an analysis of BS Dra, a detached eclipsing binary containing two almost-identical F3 V stars in a 3.36-d circular orbit, based on 40 sectors of observations from the Transiting Exoplanet Survey Satellite (TESS) and published…

Solar and Stellar Astrophysics · Physics 2026-03-13 John Southworth