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We present the first evidence for the pulsations of primary components of four eclipsing binary systems. The TESS light curves of the targets are analyzed, the light and the absolute parameters are derived. Fourier analyses are applied to…

Solar and Stellar Astrophysics · Physics 2022-03-09 Burak Ulaş , Ceren Ulusoy , Naci Erkan , Mothusi Madiba , Mercy Matsete

We describe a newly-discovered detached M-dwarf eclipsing binary system, the fourth such system known. This system was first observed by the TrES network during a long term photometry campaign of 54 nights. Analysis of the folded light…

This study depends on KIC 9641031 eclipsing binary system with a chromospherically active component. There are three type variations, such as geometrical variations due to eclipses, sinusoidal variations due to the rotational modulations…

Solar and Stellar Astrophysics · Physics 2016-05-04 Ezgi Yoldaş , Hasan Ali Dal

HD~69479/80 is a composite-spectrum binary whose components are a late-G giant and an early-A dwarf. The orbit has a period of only 91 days (which seems short for a system containing a cool giant with a radius of $\sim$13 solar radii), and…

Solar and Stellar Astrophysics · Physics 2020-11-04 R. E. M. Griffin , R. F. Griffin

As a result of the search among about 11 000 stars from the public ASAS-3 database, we report detection of pulsating components in eleven eclipsing binaries. In particular, we have found three classical Algols, MX Pav, IZ Tel, and VY Mic,…

Astrophysics · Physics 2007-05-23 A. Pigulski , G. Michalska

Eclipsing binary systems are significant objects for astrophysics in that direct observations can determine the fundamental parameters of stars. In this study, we determined precisely the fundamental parameters of the binary component stars…

Solar and Stellar Astrophysics · Physics 2024-06-04 S. Evcil , S. Adalali , N. Alan , R. Canbay , S. Bilir

We present the physical properties of EPIC 245932119 ($K_{\rm p}$ = $+$9.82) exhibiting both eclipses and pulsations from the {\it K{\rm 2}} photometry. The binary modeling indicates that the eclipsing system is in detached or semi-detached…

Solar and Stellar Astrophysics · Physics 2018-12-26 Jae Woo Lee , Kyeongsoo Hong , Martti H. Kristiansen

Observations of the star EPIC 220208795 (2MASS J01105556+0018507) reveal a single, deep and asymmetric eclipse, which we hypothesize is due to an eclipsing companion surrounded by a tilted and inclined opaque disk, similar to those seen…

Earth and Planetary Astrophysics · Physics 2022-02-09 L. van der Kamp , D. M. van Dam , M. A. Kenworthy , E. E. Mamajek , G. Pojmański

V405 And is an ultrafast-rotating (P_rot ~ 0.46 days) eclipsing binary. The system consists of a primary star with radiative core and convective envelope, and a fully convective secondary. Theories have shown, that stellar structure can…

Solar and Stellar Astrophysics · Physics 2012-05-30 K. Vida , K. Oláh , Zs. Kővári

This work includes a comprehensive analysis of the Kepler detached eclipsing binary system KIC 6629588 that aims to the detailed study of the oscillation properties of its pulsating component. Ground-based spectroscopic observations were…

Solar and Stellar Astrophysics · Physics 2024-06-19 Alexios Liakos

Time-series, multi-color photometry and high-resolution spectra of the short period eclipsing binary V Tri were obtained by observations. The completely covered light and radial velocity curves of the binary system are presented. All times…

Solar and Stellar Astrophysics · Physics 2017-05-24 A. B. Ren , X. B. Zhang , J. N. Fu , Y. P. Zhang , T. Q. Cang , L. Fox-Machado , C. Q. Li , P. Khokhuntod , Y. P. Luo

Four candidates of eclipsing multiples, based on new extraneous eclipses found on Kepler binary light curves, are presented and studied. KIC 7622486 is a double eclipsing binary candidate with orbital period of 2.2799960 days and 40.246503…

Solar and Stellar Astrophysics · Physics 2017-03-03 Jia Zhang , Sheng-Bang Qian , Jian-Duo He

KIC 9532219 is a W UMa-type eclipsing binary with an orbital period of 0.1981549 d that is below the short-period limit ($\sim$0.22 d) of the period distribution for contact binaries. The {\it Kepler} light curve of the system exhibits…

Solar and Stellar Astrophysics · Physics 2016-03-23 Jae Woo Lee , Kyeongsoo Hong , Jae-Rim Koo , Jang-Ho Park

EPIC 216747137 is a new HW~Virginis system discovered by the Kepler spacecraft during its K2 "second life". Like the other HW Vir systems, EPIC 216747137 is a post-common-envelope eclipsing binary consisting of a hot subluminous star and a…

Solar and Stellar Astrophysics · Physics 2020-11-04 R. Silvotti , V. Schaffenroth , U. Heber , R. H. Østensen , J. H. Telting , J. Vos , D. Kilkenny , L. Mancini , S. Ciceri , A. Irrgang , H. Drechsel

We present photometric and spectroscopic analysis of AE For -- a detached eclipsing binary composed of two late K dwarfs. The masses of the components are found to be 0.6314 +- 0.0035 and 0.6197 +- 0.0034 Msun and the radii to be 0.67 +-…

Solar and Stellar Astrophysics · Physics 2015-06-12 M. Rozyczka , P. Pietrukowicz , J. Kaluzny , W. Pych , R. Angeloni , I. Dekany

Context: Several hundred candidate hybrid pulsators of type A-F have been identified from space-based observations. Their large number allows both statistical analyses and detailed investigations of individual stars. This offers the…

In this research, five eclipsing binary stars were studied: AB Cas, AF Gem, AR Boo, BF Vir and CL Aur. The large sets of moments of minima were used: from the international BRNO database and amateur observations from the database AAVSO.…

Solar and Stellar Astrophysics · Physics 2019-12-02 Dmytro Tvardovskyi

Taking into account results obtained from models and analyses, we determined the nature and structures of V1003 Her. We analysed the light curves obtained in this study together with the available radial velocity curve. The analysis…

Solar and Stellar Astrophysics · Physics 2013-10-22 H. A. Dal , E. Sipahi

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

In this study, investigation of two double-lined binary stars KIC 5113146 and KIC 5111815 in NGC 6819 is presented based on both photometric and spectroscopic data. Simultaneous analysis of light and radial velocity curves was made and the…

Solar and Stellar Astrophysics · Physics 2022-07-27 E. Soydugan , F. Alicavus , F. Soydugan , S. Bilir