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We observed the 2014 superoutburst of the SU UMa-type intermediate polar CC Scl. We detected superhumps with a mean period of 0.05998(2) d during the superoutburst plateau and during three nights after the fading. During the…

Solar and Stellar Astrophysics · Physics 2015-06-23 Taichi Kato , Franz-Josef Hambsch , Arto Oksanen , Peter Starr , Arne Henden

The secondary photometric standard star #79 for the FS Aur field (Henden & Honeycutt 1997) designated as [HH97] FS Aur-79 (GSC 1874 399) is a short period (0.2508 days) eclipsing binary whose light curve is a combination of the $\beta$ Lyr…

Astrophysics · Physics 2008-11-26 S. J. Austin , J. W. Robertson , C. Tycner , T. Campbell , R. K. Honeycutt

We carried out photometric and low-resolution spectral observations of six eclipsing ultrashort-period binaries with MS components. The light curve solutions of the Rozhen observations show that all targets are overcontact systems. We found…

Solar and Stellar Astrophysics · Physics 2015-06-23 Dinko Dimitrov , Diana Kjurkchieva

The first multicolor observations, and light curve solutions, of the eclipsing binary systems V1009~Per and CRTS~J031642.2+332639 are presented. Using the 2005 version of the Wilson-Devinney code, both systems are found to be W UMa contact…

Solar and Stellar Astrophysics · Physics 2019-02-13 Raul Michel , Francesco Acerbi , Carlo Barani , Massimiliano Martignoni

We present the results of a simulation to investigate the prospects of measuring mass, age, radius, metallicity and luminosity data for brown dwarfs in fully eclipsing binary systems around late K and early M dwarfs identified by…

Astrophysics · Physics 2009-11-10 D. J. Pinfield , H. R. A. Jones , I. A. Steele

We present 2271 radial velocity measurements taken on 118 single-line binary stars, taken over eight years with the CORALIE spectrograph. The binaries consist of F/G/K primaries and M-dwarf secondaries. They were initially discovered…

The early-type massive binary MQ Cen (P$_{orb}$=3.7 d) has been investigated by means of high-resolution ($R\sim48\,000$) spectral analysis and multi-band (Johnson $BVRI$ and Str\"{o}mgren $vby$) light curve modeling. The physical…

Solar and Stellar Astrophysics · Physics 2019-10-02 V. Bakis , Z. Mikulasek , J. Janik , M. Zejda , E. Tunc , C. Nitschelm , S. Bilir , J. Liska , H. Bakis

M dwarfs are the most common type of star in the solar neighborhood, and many exhibit frequent and highly energetic flares. To better understand these events across the electromagnetic spectrum, a campaign observed AU Mic (dM1e) over 7 days…

All available photometric and spectroscopic observations were collected and used as the basis of a detailed analysis of the close binary IM Mon. The orbital period of the binary was refined to 1.19024249(0.00000014) days. The Roche…

Solar and Stellar Astrophysics · Physics 2015-05-28 H. Bakis , V. Bakis , S. Bilir , Z. Mikulasek , M. Zejda , E. Yaz , O. Demircan , I. Bulut

We present an analysis of photometric observations of the eclipsing novalike variable DW UMa made by the CBA consortium between 1999 and 2015. Analysis of 372 new and 260 previously published eclipse timings reveals a 13.6 year period or…

We present the search for eclipsing binaries with a pulsating component in the first catalogue of optically variable sources observed by OMC/INTEGRAL, which contains photometric data for more than 1000 eclipsing binaries. Five objects were…

The Kepler K2 mission now makes it possible to find and study a wider variety of eclipsing binary stars than has been possible to-date, particularly long-period systems with narrow eclipses. Our aim is to characterise eclipsing binary stars…

Solar and Stellar Astrophysics · Physics 2018-08-15 P. F. L. Maxted , R. J. Hutcheon

AR Aur is a detached eclipsing binary containing two late-B stars which are chemically peculiar, on a circular orbit of period 4.135 d. The primary is a HgMn star which shows temporal changes in its chemical abundances and spectral line…

Solar and Stellar Astrophysics · Physics 2025-07-30 John Southworth

This paper presents the photometric and spectroscopic analysis of a long-period totally eclipsing contact binary (HAT 307-0007476) for the first time. This system is a low mass ratio ($q\sim0.114$) and medium contact binary ($f\sim37.1\%$).…

Solar and Stellar Astrophysics · Physics 2025-01-22 Ling-Zhi Li , Kai Li , Xiang Gao , Xiao-Dian Chen , Shuai Feng , Dong-Yang Gao , Di-Fu Guo , Xu Chen , Xing Gao , Guo-You Sun , Shahidin Yaqup , Chunhai Bai , Ali Esamdin

KX Cancri is an eclipsing binary containing two G-type stars with an orbital period of 31.2 d and an eccentricity of 0.47. These qualities make it a promising candidate for a benchmark solar-type binary system. We analyse the first light…

Solar and Stellar Astrophysics · Physics 2020-12-22 John Southworth

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 report the results of a long-term spectroscopic monitoring of the FS\,CMa type object MWC\,728. We found that it is a binary system with a B5 Ve (T$_{\rm eff}$ = 14000$\pm$1000 K) primary and a G8 III type (T$_{\rm eff} \sim$ 5000 K)…

We focus on short--period eclipsing binaries that belong to a class of Cataclysmic Variables (CVs). They are known as polars and intermediate polars, closely resembling their prototype AM Herculis. These binaries consist of a red dwarf and…

Earth and Planetary Astrophysics · Physics 2014-03-20 Aga Słowikowska , Krzysztof Goździewski , Ilham Nasiroglu , Gottfried Kanbach , Arne Rau , Krzysztof Krzeszowski

We analyze multicolor light curves and high resolution optical spectroscopy of the eclipsing binary and Double Periodic Variable OGLE 05155332-6925581. According to Mennickent et al., this system shows a significant change in the long…

Solar and Stellar Astrophysics · Physics 2015-06-11 Hernán Garrido , Ronald E. Mennickent , Gojko Djuraŝevic , Zbigniew Kołaczkowski , Ewa Niemzcura , Nicki Mennekens