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Times of minima of eclipsing binary KIC 7023917 show quasiperiodic anti-symmetric deviations from the calculated one with an amplitude of up to 10 minutes and a period of 200 - 300 days. These changes correlate with the observed variations…

Solar and Stellar Astrophysics · Physics 2024-09-24 Pavol Gajdoš , Štefan Parimucha , Marek Skarka , Matúš Kamenec , Jozef Lipták , Raine Karjalainen

We propose that the presence of additional planets in extrasolar planetary systems can be detected by long-term transit timing studies. If a transiting planet is on an eccentric orbit then the presence of another planet causes a secular…

Astrophysics · Physics 2008-11-26 Jeremy S. Heyl , Brett J. Gladman

Although gravitational waves only interact weakly with matter, their propagation is affected by a gravitational potential. If a gravitational wave source is eclipsed by a star, measuring these perturbations provides a way to directly…

Solar and Stellar Astrophysics · Physics 2020-02-05 Pablo Marchant , Katelyn Breivik , Christopher P. L. Berry , Ilya Mandel , Shane L. Larson

Results of an analysis of the BRITE-Constellation and SMEI photometry and radial-velocity observations, archival and new, of two single-lined spectroscopic binary systems $\nu$ Centauri and $\gamma$ Lupi are reported. In the case of…

Analyzing available photometry from the Super WASP and other databases, we performed the very first light curve analysis of eight eclipsing binary systems V537 And, GS Boo, AM CrB, V1298 Her, EL Lyn, FW Per, RU Tri, and WW Tri. All of these…

Solar and Stellar Astrophysics · Physics 2014-09-19 P. Zasche

We report the very first analysis of 27 eclipsing binary systems with high eccentricities that sometimes reach up to 0.8. The orbital periods for these systems range from 1.4 to 37 days, and the median of the sample is 10.3 days. Star…

Solar and Stellar Astrophysics · Physics 2021-08-17 P. Zasche , Z. Henzl , M. Masek

We present results of the photometric observations of the young eclipsing binary KH 15D obtained during the two observational seasons of 2002-2004 years. A comparison of our data with those by Hamilton et al. (2001) and Herbst et al. (2002)…

Astrophysics · Physics 2009-11-10 O. Yu. Barsunova , V. P. Grinin , S. G. Sergeev

We present high-precision light curves of several M- and K-type, active detached eclipsing binaries (DEBs), recorded with 2-minute cadence by the Transiting Exoplanet Survey Satellite (TESS). Analysis of these curves, combined with new and…

Solar and Stellar Astrophysics · Physics 2020-09-30 Krzysztof G. Hełminiak , Andrés Jordán , Nestor Espinoza , Rafael Brahm

In this paper we analyzed the light curve of the object KIC~3832716 observed during Kepler K1 mission. We showed that this previously known eclipsing binary is in fact quadruple system, in double eclipsing binary configuration on a long…

Solar and Stellar Astrophysics · Physics 2018-12-12 M. Fedurco , Š. Parimucha

We present an in-depth analysis of the eclipsing binary DD CrB, composed of a B-type subdwarf primary and an M-type main-sequence secondary, with the main goal of investigating its eclipse timing variations (ETVs). Our new multi-color…

The first photometric, spectroscopic, and period variation studies of neglected short-period eclipsing binary V2840 Cygni are presented. High Mass Ratio Contact Binaries, especially those in the weak-contact configuration are vital while…

Solar and Stellar Astrophysics · Physics 2023-03-08 Ravi Raja Pothuneni , Shanti Priya Devarapalli , Rukmini Jagirdar

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 report the discovery with $TESS$ of a third set of eclipses from V994 Herculis (TIC 424508303), previously only known as a doubly-eclipsing system. The key implication of this discovery and our analyses is that V994 Her is the second…

By cross-matching the eclipsing binary catalog from TESS with that from LAMOST MRS, semi-detached eclipsing binaries with radial velocities coverage spanning more than 0.3 phases were authenticated. The absolute parameters for these systems…

Solar and Stellar Astrophysics · Physics 2024-12-11 Yajuan Lei , Guiping Zhou , Liang Wang , Guangwei Li , Kai Li , Tuan Yi

We present new long-term CCD photometry for EP And acquired during the period 2007 to 2012. The light curves display total eclipses at primary minima and season-to-season light variability. Our synthesis for all available light curves…

Solar and Stellar Astrophysics · Physics 2015-06-12 Jae Woo Lee , Tobias Cornelius Hinse , Jang-Ho Park

We report the detection of eclipses in GJ 3236, a bright (I = 11.6) very low mass binary system with an orbital period of 0.77 days. Analysis of light- and radial velocity curves of the system yielded component masses of 0.38 +/- 0.02 and…

We would like to investigate the information contained in our observations and to what extent each of them contributes individually to constraining the physical parameters of the system we are investigating. To do this, we present a study…

Astrophysics · Physics 2007-05-23 O. L Creevey , T. M. Brown , S. Jiménez-Reyes , J. A. Belmonte

We present the first modern analysis of two young, eclipsing binaries, EK Cep and HS Her, based on new, ground-based, CCD multicolour light curves as well as the TESS observations, radial velocity curves, and eclipse timing measurements.…

Solar and Stellar Astrophysics · Physics 2022-07-21 Olivera Latković , Kosmas Gazeas , Haralambi Markov , Atila Čeki , Sofia Palafouta

Aims: We present a new updated study of the unique quintuple system of two eclipsing binaries, V994 Her. Methods: Based on new obtained photometric observations, we analysed the period variations of the two eclipsing pairs of V994 Her.…

Solar and Stellar Astrophysics · Physics 2016-04-06 P. Zasche , R. Uhlar

We describe the discovery of a 0.68+0.52 solar mass eclipsing binary (EB) with an 8.4-day orbital period, found through a systematic search of ten fields of the Trans-atlantic Exoplanet Survey (TrES). Such long-period low-mass EBs…

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