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We present the discovery and CCD observations of the first eclipsing binary with a Type II Cepheid component in our Galaxy. The pulsation and orbital periods are found to be 4.1523 and 51.38 days, respectively, i.e. this variable is a…

Astrophysics · Physics 2014-11-18 S. V. Antipin , K. V. Sokolovsky , T. I. Ignatieva

We have created a catalogue of variable stars found from a search of the publicly available K2 mission data from Campaigns 1 and 0. This catalogue provides the identifiers of 8395 variable stars, including 199 candidate eclipsing binaries…

Solar and Stellar Astrophysics · Physics 2015-06-29 D. J. Armstrong , J. Kirk , K. W. F. Lam , J. McCormac , S. R. Walker , D. J. A. Brown , H. P. Osborn , D. L. Pollacco , J. Spake

We present 370 candidate eclipsing binaries (EBs), identified from ~510,000 short cadence TESS light curves. Our statistical criteria identify 5,105 light curves with features consistent with eclipses (~1% of the initial sample). After…

Solar and Stellar Astrophysics · Physics 2022-05-31 Erin L. Howard , James R. A. Davenport , Kevin R. Covey

Progress in understanding the formation and evolution of planetary nebulae (PN) has been restricted by a paucity of well-determined central star masses. To address this deficiency we aim to (i) significantly increase the number of known…

Astrophysics · Physics 2008-09-16 B. Miszalski , A. Acker , A. F. J. Moffat , Q. A. Parker , A. Udalski

A new catalog of visual double systems containing eclipsing binaries as one component is presented. The main purpose of this catalog is to compile a complete list of all known multiples of this variety, both for current analysis and to…

Solar and Stellar Astrophysics · Physics 2009-07-30 P. Zasche , M. Wolf , W. I. Hartkopf , P. Svoboda , R. Uhlar , A. Liakos , K. Gazeas

Most of our knowledge about the structure of the Milky Way has come from the study of variable stars. Among the variables, mimicking the periodic variation of pulsating stars, are the eclipsing binaries. These stars are important in…

Solar and Stellar Astrophysics · Physics 2021-03-31 E. Botan , R. K. Saito , D. Minniti , A. Kanaan , R. Contreras Ramos , T. S. Ferreira , L. V. Gramajo , M. G. Navarro

Searches for planetary transits find many astrophysical false positives as a by-product. There are four main types analyzed in the literature: a grazing-incidence eclipsing binary star, an eclipsing binary star with a small radius companion…

Solar and Stellar Astrophysics · Physics 2016-08-14 Radosław Poleski , Peter R. McCullough , Jeff A. Valenti , Christopher J. Burke , Pavel Machalek , Kenneth Janes

We report a study of the eclipse timing variation (ETV) of short period ($P_1\le 6^d$) eclipsing binaries (EB) monitored during the photometric survey OGLE-IV. From the 425\,193 EBs we selected approximately 80\,000 binaries that we found…

Solar and Stellar Astrophysics · Physics 2019-03-05 T. Hajdu , T. Borkovits , E. Forgács-Dajka , J. Sztakovics , G. Marschalkó , G. Kutrovátz

Twenty-one eclipsing binaries were selected for an analysis from a huge database of observations made by the INTEGRAL/OMC camera. The photometric data were processed and analyzed, resulting in a first light-curve study of these neglected…

Solar and Stellar Astrophysics · Physics 2011-02-15 P. Zasche

We present catalog of 26 121 visually inspected eclipsing binary stars identified in the Large Magellanic Cloud during the third phase of the Optical Gravitational Lensing Experiment. The sample is limited to the out-of-eclipse brightness I…

Solar and Stellar Astrophysics · Physics 2011-08-03 D. Graczyk , I. Soszyński , R. Poleski , G. Pietrzyński , A. Udalski , M. K. Szymański , M. Kubiak , Ł. Wyrzykowski , K. Ulaczyk

A sample of contact binaries discovered by the OGLE project in Baade's Window, with orbital periods longer than one day and with available color and light-curve data, has been analyzed. It consists of only 32 systems, in contrast to 388…

Astrophysics · Physics 2015-06-24 Slavek M. Rucinski

Aims. We aim to find more eclipsing multiple systems and obtain their parameters, thus increasing our understanding of multiple systems. Methods. The extraneous eclipses on the \textit{kepler} binary light curves indicating extraneous…

Solar and Stellar Astrophysics · Physics 2018-03-28 J. Zhang , S. B. Qian , S. M. Wang , L. L. Sun , Y. Wu , L. Q. Jiang

We have compiled a catalogue of eclipsing variable stars, the largest catalogue, containing classified eclipsing binaries. A procedure for the classification of eclipsing binaries, based on the catalogued data, is also developed. It was…

Solar and Stellar Astrophysics · Physics 2013-06-20 Oleg Malkov , Ekaterina Avvakumova

35 Eclipsing binaries presenting unambiguous total eclipses were selected from a subsample of the list of Wyrzykowski et al. (2003). The photometric elements are given for the I curve in DiA photometry, as well as approximate Teff and…

Astrophysics · Physics 2009-11-11 P. North

We present the discovery of 32 new double periodic variables (DPVs) located toward the Galactic bulge. We found these objects among the nearly half a million binary stars published by the Optical Gravitational Lensing Experiment project.…

The MACHO Project collected photometry of many RR Lyrae stars from its observations of the Milky Way's bulge. We examined the lightcurves of 3256 stars identified as RRab Lyr variables by \cite{Kund2008}, subtracting an empirical model of…

Solar and Stellar Astrophysics · Physics 2015-03-19 Michael W. Richmond

We present light curves and periods of 53 candidates for short period eclipsing binary stars identified by SuperWASP. These include 48 newly identified objects with periods <2x10^4 seconds (~0.23d), as well as the shortest period binary…

We present the results of a search through the photometric database of eclipsing Kepler binaries (Prsa et al. 2011; Slawson et al. 2011) looking for evidence of hierarchical triple star systems. The presence of a third star orbiting the…

Solar and Stellar Astrophysics · Physics 2015-06-12 S. Rappaport , K. Deck , A. Levine , T. Borkovits , J. Carter , I. El Mellah , R. Sanchis-Ojeda , B. Kalomeni

Gaia provided the largest-ever catalogue of white dwarf stars. We use this catalogue, along with the third public data release of the Zwicky Transient Facility (ZTF), to identify new eclipsing white dwarf binaries. Our method exploits light…

Solar and Stellar Astrophysics · Physics 2021-11-18 Pascal M. Keller , Elmé Breedt , Simon Hodgkin , Vasily Belokurov , James Wild , Ignacio García-Soriano , Jacob L. Wise

This project is a massive near-infrared (NIR) search for variable stars in highly reddened and obscured open cluster (OC) fields projected on regions of the Galactic bulge and disk. The search is performed using photometric NIR data in the…