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We report the discovery of 2M1222-57 as a low-mass, pre-main-sequence (PMS) eclipsing binary (EB) in the Lower Centaurus Crux (LCC) association for which, using Gaia parallaxes and proper motions with a neural-net age estimator, we…

Solar and Stellar Astrophysics · Physics 2022-12-28 Keivan G. Stassun , Guillermo Torres , Marina Kounkel , Dax L. Feliz , Luke G. Bouma , Steve B. Howell , Crystal L. Gnilka , E. Furlan

We present the discovery of four low-mass ($M<0.6$ $M_\odot$) eclipsing binary (EB) systems in the sub-Gyr old Praesepe open cluster using Kepler/K2 time-series photometry and Keck/HIRES spectroscopy. We present a new Gaussian process…

Eclipsing binaries (EBs) are unique targets for measuring precise stellar properties and constrain stellar evolution models. In particular, it is possible to measure at the percent level masses and radii of both components of a double-lined…

Solar and Stellar Astrophysics · Physics 2020-01-08 Patrick Gaulme , Joyce A. Guzik

Eclipsing binaries (EBs) are unique benchmarks for stellar evolution. On the one hand, detached EBs hosting at least one star with detectable solar-like oscillations constitute ideal test objects to calibrate asteroseismic measurements. On…

Solar and Stellar Astrophysics · Physics 2021-04-28 M. Benbakoura , P. Gaulme , J. McKeever , S. Sekaran , P. G. Beck , F. Spada , J. Jackiewicz , S. Mathis , S. Mathur , A. Tkachenko , R. A. García

In this paper we reanalyze the extended ETV curves of the formerly identified triple star candidates and many other $Kepler$ EBs. Besides the confirmations of the former findings and/or the improvements of the triple systems' orbital…

Solar and Stellar Astrophysics · Physics 2025-03-19 T. Borkovits , S. A. Rappaport , T. Mitnyan , I. B. Bíró , I. Csányi , E. Forgács-Dajka , A. Forró , T. Hajdu , B. Seli , J. Sztakovics , A. Göblyös , A. Pál

Eclipsing binaries serve as a valuable source of stellar masses and radii that inform stellar evolutionary models and provide insight into additional astrophysical processes. The exquisite light curves generated by space-based missions such…

Solar and Stellar Astrophysics · Physics 2016-05-25 Rachel A. Matson , Douglas R. Gies , Zhao Guo , Jerome A. Orosz

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

Eclipsing post-common envelope binaries are highly important for resolving the poorly understood, very short-lived common envelope phase. Most hot subdwarfs (sdO/Bs) are the bare He-burning cores of red giants which have lost almost all of…

In recent years we have witnessed an explosion of photometric time-series data, collected for the purpose of finding a small number of rare sources, such as transiting extrasolar planets and gravitational microlenses. Once combed, these…

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…

Astrophysics · Physics 2009-11-11 Omer Tamuz , Tsevi Mazeh , Pierre North

We have conducted a programme to determine the fundamental parameters of a substantial number of eclipsing binaries of spectral types O and B in the Small Magellanic Cloud. New spectroscopic data, obtained with the two-degree-field…

Astrophysics · Physics 2011-09-29 R. W. Hilditch , I. D. Howarth , T. J. Harries

Asteroseismology coupled with eclipsing binary modelling shows a great potential in improving the efficiency of measurements or calibrations of the interior mixing profile in massive stars. This helps, for instance in treating the…

Solar and Stellar Astrophysics · Physics 2024-04-18 C. I. Eze , G. Handler

Context. Intermediate- to high-mass stars are the least numerous types of stars and they are less well understood than their more numerous low-mass counterparts in terms of their internal physical processes. Modelling the photometric…

Solar and Stellar Astrophysics · Physics 2021-08-25 Luc W. IJspeert , Andrew Tkachenko , Cole Johnston , Stefano Garcia , Joris De Ridder , Timothy Van Reeth , Conny Aerts

We report the discovery of a low-mass (0.26 +/- 0.02, 0.15 +/- 0.01 Msol) pre-main-sequence eclipsing binary with a 5.3 day orbital period. JW 380 was detected as part of a high-cadence time-resolved photometric survey (the Monitor project)…

Pre-main sequence (PMS) models provide invaluable tools for the study of star forming regions as they allow to assign masses and ages to young stars. Thus it is of primary importance to test the models against observations of PMS stars with…

Solar and Stellar Astrophysics · Physics 2015-05-30 Mario Gennaro , Pier Giorgio Prada Moroni , Emanuele Tognelli

We identify 231 objects in the newly released Cycle 0 dataset from the Kepler Mission as double-eclipse, detached eclipsing binary systems with Teff < 5500 K and orbital periods shorter than ~32 days. We model each light curve using the…

Solar and Stellar Astrophysics · Physics 2015-05-19 J. L. Coughlin , M. Lopez-Morales , T. E. Harrison , N. Ule , D. I. Hoffman

We compiled a list of more than 3500 eclipsing binaries located in and near the Northern Continuous Viewing Zone (NCVZ) of the TESS space telescope that have a sufficient amount of TESS photometry to search for additional hidden components…

Solar and Stellar Astrophysics · Physics 2024-02-05 T. Mitnyan , T. Borkovits , D. R. Czavalinga , S. A. Rappaport , A. P'al , B. P. Powell , T. Hajdu

Post-common envelope binary systems evolve when matter is transferred from the primary star at a rate that cannot be accommodated by its secondary companion. A common envelope forms which is subsequently ejected resulting in a system with a…

Solar and Stellar Astrophysics · Physics 2022-06-29 D. Pulley , I. D. Sharp , J. Mallett , S. von Harrach

Planetary nebulae trace the hottest and most luminous phase of evolution of solar-type stars. We use these hot, bright stars to investigate extinctions towards a complete sample of 262 confirmed PNe with large angular diameters, which have…

Solar and Stellar Astrophysics · Physics 2025-09-16 Alexander Csukai , Albert A. Zijlstra , Iain McDonald , Orsola De Marco

This study presents a multi-task machine learning framework for simultaneous morphology classification and physical parameter estimation of eclipsing binaries using photometric light curves. We train Random Forest and XGBoost ensemble…

Solar and Stellar Astrophysics · Physics 2026-04-22 Burak Ulaş