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We present the first BVR photometry, period variation, and photometric light-curve analysis of two poorly studied eclipsing binaries V1321 Cyg and CR Tau. Observations were carried out from November 2017 to January 2020 at the observatory…

Solar and Stellar Astrophysics · Physics 2021-09-08 V. Kudak , M. Fedurco , V. Perig , Š. Parimucha

We present a new study of the Algol-type eclipsing binary system AS Eri based on the combination of the MOST and TESS light curves and a collection of very precise radial velocities obtained with the spectrographs HERMES operating at the…

Solar and Stellar Astrophysics · Physics 2022-02-04 P. Lampens , D. Mkrtichian , H. Lehmann , K. Gunsriwiwat , L. Vermeylen , J. Matthews , R. Kuschnig

We present the results of a multi-site photometric campaign carried out in 2004-2008 for the Algol-type eclipsing binary system CT Her, the primary component of which shows Delta Scuti-type oscillations. Our data consist of differential…

Photometric observations of the eccentric eclipsing binary V1143 Cygni were performed during the August-September 2000 and July 2002, in B and V bands of the Johnson system. The analysis on both light curves was done separately using the…

Astrophysics · Physics 2009-11-10 A. Dariush , N. Riazi , A. Afroozeh

V505 Per is a detached eclipsing binary containing two F5 V stars in a 4.22-d circular orbit. We use a light curve from the TESS satellite and published radial velocity measurements to establish the properties of the system to high…

Solar and Stellar Astrophysics · Physics 2021-06-09 John Southworth

The contact eclipsing binary system XX Leonis (P = 0.97 days, sp A8) has been analysed using the PHOEBE programme, based on the Wilson Devinney code. The BVRI light curves were obtained during spring 2006 using the 20-cm telescope and ST-7…

Astrophysics · Physics 2009-06-25 P. Zasche , M. Wolf , P. Svoboda

We have obtained CCD photometry in 2010-11 of V963 Per (=GSC3355 0394), which is a recently identified close binary star with unequal eclipse depths. The seven new eclipse timings yield an improved ephemeris, but we caution that secondary…

Solar and Stellar Astrophysics · Physics 2022-07-22 Andrew P. Odell , Patrick Wils , Clarissa Dirks , Blythe Guvenen , Jo C. O'Malley , Antonia S. Villarreal , Rita M. Weinzettle

CCD multi-band light curves of the neglected eclipsing binaries V405 Cep, V948 Her, KR Mon and UZ Sge were obtained and analysed using the Wilson-Devinney code. New geometric and absolute parameters were derived and used to determine their…

Solar and Stellar Astrophysics · Physics 2014-04-11 Alexios Liakos , Panagiotis Niarchos

NSVS 02502726 has been known as a double-lined, detached eclipsing binary that consists of two low-mass stars. We obtained $BVRI$ photometric follow-up observations in 2009 and 2011 to measure improved physical properties of the binary…

Solar and Stellar Astrophysics · Physics 2015-06-12 Jae Woo Lee , Jae-Hyuck Youn , Seung-Lee Kim , Chung-Uk Lee

New CCD photometric observations in V, R and I filters of the eclipsing binary AV CMi have been obtained. The complete light curves are analyzed with the Wilson-Devinney code and new geometric and photometric elements are derived. Moreover,…

Solar and Stellar Astrophysics · Physics 2009-12-21 A. Liakos , P. Niarchos

New multiband CCD photometry is presented for the eclipsing binary GW Gem; the $RI$ light curves are the first ever compiled. Four new minimum timings have been determined. Our analysis of eclipse timings observed during the past 79 years…

Astrophysics · Physics 2009-11-13 Jae Woo Lee , Seung-Lee Kim , Chung-Uk Lee , Ho-Il Kim , Jang-Ho Park , So-Ra Park , Robert H. Koch

We present a new analysis of the light curve for the secondary star in the eclipsing binary millisecond pulsar system PSR B1957+20. Combining previous data and new data points at minimum from the Hubble Space Telescope, we have 100%…

Eclipsing binary systems play a vital role in astrophysics, as they provide a direct means of measuring fundamental stellar parameters. By combining high-precision space-based observations with ground-based multicolor photometric data,…

Solar and Stellar Astrophysics · Physics 2025-06-12 N. Alan , M. Alpsoy , Y. Kilic

We report spectroscopic and differential photometric observations of the A-type system V482 Per that reveal it to be a rare hierarchical quadruple system containing two eclipsing binaries. One has the previously known orbital period of 2.4…

Solar and Stellar Astrophysics · Physics 2017-09-20 Guillermo Torres , Claud H. Sandberg Lacy , Francis C. Fekel , Marek Wolf , Matthew W. Muterspaugh

The first multiband photometric solutions of the short-period V Gru eclipsing binary from the southern hemisphere is presented in this study. Light curves of the system were observed through BVI filters at the Congarinni Observatory in…

Solar and Stellar Astrophysics · Physics 2023-04-26 Mehmet Tanriver , Atila Poro , Ahmet Bulut , Ahmet Keskin , Mark G. Blackford

We present new BVR band photometric light curves of BO Aries obtained in 2020 and combined them with the Transiting Exoplanet Survey Satellite (TESS) light curves. We obtained times of minima based on Gaussian and Cauchy distributions and…

Solar and Stellar Astrophysics · Physics 2021-02-17 Atila Poro , Shiva Zamanpour , Maryam Hashemi , Yasemin Aladağ , Nazim Aksaker , Samaneh Rezaei , Arif Solmaz

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…

Astrophysics · Physics 2010-03-05 C. Gałan , M. Mikołajewski , T. Tomov , D. Kolev , D. Graczyk , A. Majcher , J. Ł. Janowski , M. Cikała

We present CCD photometric observations of an eclipsing binary in the direction of the open cluster Praesepe using the 2 m telescope of IUCAA Girawali Observatory, India. Though the system was classified as an eclipsing binary by Pepper et…

Solar and Stellar Astrophysics · Physics 2019-08-19 D. Shanti Priya , K. Sriram , P. Vivekananda Rao

New photometric observations of the hierarchical eclipsing TY CrA system were taken in the optical with VYSOS6 and in the near-IR with SOFI and REMIR. They are the first observations showing the deep eclipse minimum of the pre-main sequence…

Solar and Stellar Astrophysics · Physics 2015-06-15 M. Vanko , M. Ammler-von Eiff , T. Pribulla , R. Chini , E. Covino , R. Neuhaeuser

We present the physical parameters of an eclipsing binary system EPIC 211982753 derived through photometric and radial velocity data modeling. We make use of photometric data from NASA's K2 mission, ASAS-SN, and 1.3-m Devasthal Fast Optical…

Solar and Stellar Astrophysics · Physics 2023-08-23 Alaxender Panchal , Yogesh C. Joshi