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We present a detailed light curve analysis of publicly available V band observations of 62 binary stars, mostly contact binaries, obtained by the All Sky Automated Survey (ASAS)-3 project between 2000 and 2009. Eclipsing binaries are…

太阳与恒星天体物理 · 物理学 2015-05-20 Sukanta Deb , Harinder P. Singh

The first analysis of the photometric observation in BVR filters of a W UMa type binary system BQ Ari was performed. Light curve analysis was performed using Wilson-Devinney (W-D) code combined with a Monte Carlo (MC) simulation to…

We present new photometric observations of RV Tri. A complete light curve was obtained in the R and V filters. These light curves were processed by the Wilson-Devinney (WD) code and the FOTEL to get solution of this eclipsing binary system.…

天体物理学 · 物理学 2007-05-23 F. Hroch , M. Basny

We present a technique to determine the orbital and physical parameters of eclipsing eccentric Wolf-Rayet + O-star binaries, where one eclipse is produced by the absorption of the O-star light by the stellar wind of the W-R star. Our method…

太阳与恒星天体物理 · 物理学 2015-05-13 C. Perrier , J. Breysacher , G. Rauw

We introduce a special class of functions for mathematical modeling of periodic signals of special shape with irregularly spaced arguments. This method was developed for determination of phenomenological characteristics of the light curves,…

太阳与恒星天体物理 · 物理学 2015-06-11 Ivan L. Andronov

We present the most precise light curve ever obtained of a detached eclipsing binary star and use it investigate the inclusion of non-linear limb darkening laws in eclipsing binary light curve models. This light curve, of the bright system…

天体物理学 · 物理学 2014-10-13 John Southworth , Hans Bruntt , Derek L. Buzasi

We present a new algorithm -- Eclipsing Binary Automated Solver (EBAS), to analyse lightcurves of eclipsing binaries. The algorithm is designed to analyse large numbers of lightcurves, and is therefore based on the relatively fast EBOP…

天体物理学 · 物理学 2009-11-11 Omer Tamuz , Tsevi Mazeh , Pierre North

We present a detailed V-band photometric light curve modeling of 30 eclipsing binaries using the data from Pietrukowicz et al. (2009) collected with the European Southern Observatory Very Large Telescope (ESO VLT) of diameter 8-m. The light…

We introduce a new adaptive and fully Bayesian grid-based method to model strong gravitational lenses with extended images. The primary goal of this method is to quantify the level of luminous and dark-mass substructure in massive galaxies,…

天体物理学 · 物理学 2009-11-13 S. Vegetti , L. V. E. Koopmans

First photometric study for the newly discovered systems USNO-B1.0 1091-0130715 and GSC-03449-0680 were applied by means of recent windows interface version of the Wilson and Devinney code based on model atmospheres by Kurucz (1993). The…

太阳与恒星天体物理 · 物理学 2015-06-19 M. M. Elkhateeb , M. I. Nouh , R. H. Nelson

New CCD photometric observations and their investigation of the W UMa-type binary, V870 Ara, are presented. Light curves of the system were taken through BVI filters from the Congarinni Observatory in Australia. The new ephemeris is…

太阳与恒星天体物理 · 物理学 2021-07-14 Atila Poro , Mark G. Blackford , Fatemeh Davoudi , Amirreza Mohandes , Mohammad Madani , Samaneh Rezaei , Elnaz Bozorgzadeh

Phenomenological characteristics of the sample of the Algol-type stars are revised using a recently developed NAV ("New Algol Variable") algorithm (2012Ap.....55..536A, 2012arXiv 1212.6707A) and compared to that obtained using common…

太阳与恒星天体物理 · 物理学 2016-01-13 Mariia G. Tkachenko , Ivan L. Andronov , Lidia L. Chinarova

Several approaches exist to model gravitational lens systems. In this study, we apply global optimization methods to find the optimal set of lens parameters using a genetic algorithm. We treat the full optimization procedure as a two-step…

宇宙学与河外天体物理 · 物理学 2015-06-11 Adam Rogers , Jason D. Fiege

In the last couple of decades, tremendous progress has been achieved in developing robotic telescopes and, as a result, sky surveys (both terrestrial and space) have become the source of a substantial amount of new observational data. These…

太阳与恒星天体物理 · 物理学 2021-08-04 Michal Čokina , Viera Maslej-Krešňáková , Peter Butka , Štefan Parimucha

Period estimation is an important task in the classification of many variable astrophysical objects. Here we present GRAPE: Genetic Routine for Astronomical Period Estimation, a genetic algorithm optimised for the processing of survey data…

天体物理仪器与方法 · 物理学 2018-07-19 Paul R. McWhirter , Iain A. Steele , Abir Hussain , Dhiya Al-Jumeily , Marley M. B. R. Vellasco

The availability of a robust and efficient routine for calculating light curves of a finite source magnified due to bending its light by the gravitational field of an intervening binary lens is essential for determining the characteristics…

天体物理学 · 物理学 2008-11-26 M. Dominik

New CCD light curves of the recently detected eclipsing variable GSC 4589-2999 were obtained and analysed using the Wilson-Deninney code. Spectroscopic observations of the system allowed the spectral classification of the components and the…

太阳与恒星天体物理 · 物理学 2014-04-11 Alexios Liakos , Paolo Bonfini , Panagiotis Niarchos , Despina Hatzidimitriou

We present an image classification algorithm using deep learning convolutional neural network architecture, which classifies the morphologies of eclipsing binary systems based on their light curves. The algorithm trains the machine with…

太阳与恒星天体物理 · 物理学 2023-06-06 Burak Ulas

We present our multicolour photometric data of the primary and secondary eclipses of OW Gem that took place in 1995, 2002, and 2006, as well as the new radial-velocity data collected since 1993 by R. F. Griffin and A. Duquennoy. The…

天体物理学 · 物理学 2010-03-05 C. Gałan , M. Mikołajewski , T. Tomov , D. Kolev , D. Graczyk , A. Majcher , J. Ł. Janowski , M. Cikała