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We present new spectroscopic observations of the early type, double-lined eclipsing binary V446\,Cep. The radial velocities and the photometric data obtained by $Hipparcos$ were analysed for deriving the astrophysical parameters of the…

Solar and Stellar Astrophysics · Physics 2015-10-09 Ö. Çakırlı , C. Ibanoglu , E. Sipahi , A. Frasca , G. Catanzaro

Stellar fundamental properties (masses, radii, effective temperatures) can be extracted from observations of eclipsing binary systems with remarkable precision, often better than 2%. Such precise measurements afford us the opportunity to…

Solar and Stellar Astrophysics · Physics 2015-06-10 Gregory A. Feiden

We present the results from a complex study of an eclipsing O-type binary (Aa+Ab) with the orbital period $P_{A}=3.2254367$ days, that forms part of a higher-order multiple system in a configuration (A+B)+C. We derived masses of the Aa+Ab…

Solar and Stellar Astrophysics · Physics 2024-04-05 Mónica Taormina , R. -P. Kudritzki , B. Pilecki , G. Pietrzyński , I. B. Thompson , J. Puls , M. Górski , B. Zgirski , D. Graczyk , W. Gieren , G. Hajdu

We present a comprehensive photometric study of the pulsating, eclipsing binary OO Dra. Simultaneous B- and V-band photometry of the star was carried out on 14 nights. Revised orbital period and a new ephemeris were derived from the data.…

Solar and Stellar Astrophysics · Physics 2015-06-22 X. B. Zhang , L. C. Deng , J. F. Tian , K. Wang , J. J. Sun , Q. L. Liu , H. Q. Xin , Q. Zhou , Z. Z. Yan , Z. Q. Luo , C. Q. Luo

We report our spectroscopic monitoring of the detached, grazing, and slightly eccentric 12-day double-lined eclipsing binary EPIC 219568666 in the old nearby open cluster Ruprecht 147. This is the second eclipsing system to be analyzed in…

New photometric observations of NSVS 01286630 were performed and two sets of four-color (B, V , Rc, Ic) light curves (LCs) were obtained. Using the 2013 version of the Wilson-Devinney (W-D) code, we analyzed these data. The photometric…

Solar and Stellar Astrophysics · Physics 2018-09-19 Bin Zhang , Sheng-bang Qian , Wen-ping Liao , Li-ying Zhu , Ai-jun Dong , Qi-jun Zhi

We identify 231 objects in the newly released Cycle 0 dataset from the Kepler Mission as double-eclipse, detached eclipsing binary systems with Teff < 5500 K and orbital periods shorter than ~32 days. We model each light curve using the…

Solar and Stellar Astrophysics · Physics 2015-05-19 J. L. Coughlin , M. Lopez-Morales , T. E. Harrison , N. Ule , D. I. Hoffman

The precision of photometric and spectroscopic observations has been systematically improved in the last decade, mostly thanks to space-borne photometric missions and ground-based spectrographs dedicated to finding exoplanets. The field of…

The goal of this work is to conduct a photometric study of eclipsing binaries in M31. We apply a modified box-fitting algorithm to search for eclipsing binary candidates and determine their period. We classify these candidates into…

A novel method of analysis of double-lined eclipsing binaries containing a radially pulsating star is presented. The combined pulsating-eclipsing light curve is built up from a purely eclipsing light curve grid created using an existing…

We have used high-resolution spectroscopy to observe the Kepler-16 eclipsing binary as a double-lined system, and measure precise radial velocities for both stellar components. These velocities yield a dynamical mass-ratio of…

KIC 10661783 is an eclipsing binary that shows Delta Sct-like oscillations. More than 60 pulsation frequencies have been detected in its light curve as observed by the Kepler satellite. We want to determine the fundamental stellar and…

Solar and Stellar Astrophysics · Physics 2013-08-20 H. Lehmann , J. Southworth , A. Tkachenko , K. Pavlovski

Eclipsing binaries are important tools for studying stellar evolution and stellar interiors. Their accurate fundamental parameters are used to test evolutionary models, and systems showing apsidal motion can also be used to test the model's…

Solar and Stellar Astrophysics · Physics 2018-06-27 Kathryn V. Lester , Douglas R. Gies

To add to the growing collection of well-studied double periodic variables (DPVs) we have carried out the first spectroscopic and photometric analysis of the eclipsing binary DQ Velorum to obtain its main physical stellar and orbital…

Solar and Stellar Astrophysics · Physics 2013-03-12 D. Barría , R. E. Mennickent , L. Schmidtobreick , G. Djurasević , Z. Kołaczkowski , G. Michalska , M. Vucković , E. Niemczura

V501 Her is a well detached G3 eclipsing binary star with a period of 8.597687 days for which we have determined very accurate light and radial-velocity curves by using robotic telescopes. Results of these data indicate that the component…

Solar and Stellar Astrophysics · Physics 2015-06-22 Claud H. Sandberg Lacy , Francis C. Fekel

Based on luminosity contributions, we develop a spectroscopic modelling method to derive atmospheric parameters of component stars in binary systems. The method is designed for those spectra of binaries which show double-lined features due…

Solar and Stellar Astrophysics · Physics 2023-03-15 Xiang-Lei Chen , A-Li Luo , Jian-Jun Chen , Rui Wang , Xiao-Bin Zhang , Wen Hou , Bo Qiu , Fang Zuo

The two objects 1SWASP J150822.80-054236.9 and 1SWASP J160156.04+202821.6 were initially detected from their SuperWASP archived light curves as candidate eclipsing binaries with periods close to the short-period cut-off of the orbital…

Solar and Stellar Astrophysics · Physics 2014-03-07 M. E. Lohr , S. T. Hodgkin , A. J. Norton , U. C. Kolb

AP And is a well-detached F5 eclipsing binary star for which only a very limited amount of information was available before this publication. We have obtained very extensive measurements of the light curve (19097 differential V magnitude…

Solar and Stellar Astrophysics · Physics 2015-06-19 Claud H. Sandberg Lacy , Guillermo Torres , Francis C. Fekel , Matthew W. Muterspaugh

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

EL CVn-type eclipsing binaries are composed of a massive A-type main-sequence primary star and a hotter B-type secondary star. This paper presents the time-series photometric and asteroseismic results of the EL CVn-type star 1SWASP…

Solar and Stellar Astrophysics · Physics 2021-11-03 Seung-Lee Kim , Jae Woo Lee , Chung-Uk Lee , Yongseok Lee , Dong-Joo Lee , Kyeongsoo Hong , Sang-Mok Cha , Dong-Jin Kim , Byeong-Gon Park