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We present a comprehensive study of the massive binary system HM1~8, based on multi-epoch high resolution spectroscopy, $V$-band photometry and archival X-ray data. Spectra from the OWN Survey, a high resolution optical monitoring of…

EBLM J0608-59 / TOI-1338 / BEBOP-1 is a 12th-magnitude, F9V star in an eclipsing binary with a much fainter M-dwarf companion on a wide, eccentric orbit (P=14.6 d). The binary is orbited by two circumbinary planets: one transiting on a…

太阳与恒星天体物理 · 物理学 2024-06-07 P. F. L. Maxted , N. J. Miller , D. Sebastian , A. H. M. J. Triaud , D. V. Martin , A. Duck

We report extensive spectroscopic and differential V-band photometric observations of the 18.4-day detached double-lined eclipsing binary LV Her (F9V), which has the highest eccentricity (e = 0.613) among the systems with well-measured…

太阳与恒星天体物理 · 物理学 2014-11-20 Guillermo Torres , Claud H. Sandberg Lacy , Antonio Claret

We present an analysis of BS Dra, a detached eclipsing binary containing two almost-identical F3 V stars in a 3.36-d circular orbit, based on 40 sectors of observations from the Transiting Exoplanet Survey Satellite (TESS) and published…

太阳与恒星天体物理 · 物理学 2026-03-13 John Southworth

We present a new eclipsing binary (EB) showing multiperiodic oscillations using the first three sectors of {\it TESS} photometry. The eclipse and pulsation light curves of TIC 309658221 were modeled using an iterative method to obtain a…

太阳与恒星天体物理 · 物理学 2019-05-15 Jae Woo Lee , Martti H. Kristiansen , Kyeongsoo Hong

The A/F-type stars and pulsators ($\delta$ Scuti-$\gamma$ Dor) are in a critical regime where they experience the transition from radiative to convective transport of energy in their envelopes. Such stars can pulsate in both gravity and…

太阳与恒星天体物理 · 物理学 2017-12-01 Anya , Samadi Gh. , Patricia Lampens , Davood M. Jassur

I describe the selection and initial characterisation of 20 eclipsing binary stars that are suitable for calibration and testing of stellar models and data analysis algorithms used by the PLATO mission and spectroscopic surveys. The binary…

太阳与恒星天体物理 · 物理学 2023-04-26 P. F. L. Maxted

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…

太阳与恒星天体物理 · 物理学 2015-06-11 Hernán Garrido , Ronald E. Mennickent , Gojko Djuraŝevic , Zbigniew Kołaczkowski , Ewa Niemzcura , Nicki Mennekens

The eclipsing and double-lined spectroscopic binary V380 Cyg is an extremely important probe of stellar evolution: its primary component is a high-mass star at the brink of leaving the main sequence whereas the secondary star is still in…

太阳与恒星天体物理 · 物理学 2015-05-13 K. Pavlovski , E. Tamajo , P. Koubsky , J. Southworth , S. Yang , V. Kolbas

Binary stars provide a valuable test of stellar structure and evolution, because the masses of the individual stellar components can be derived with high accuracy and in a model-independent way. In this work, we study Spica, an eccentric…

The combined strength of asteroseismology and empirical stellar basic parameter determinations for in-depth asteroseismic analysis of massive pulsators in eclipsing binaries shows great potential for treating the challenging and mysterious…

太阳与恒星天体物理 · 物理学 2024-03-20 Christian I. Eze , Gerald Handler

WR~21a was known as a massive spectroscopic binary composed of an O2.5 If*/WN6ha primary and an O3 V((f*))z secondary. Although a minimum value, the mass estimated for the primary placed it as one of the most massive stars found in our…

太阳与恒星天体物理 · 物理学 2022-09-14 Rodolfo H. Barbá , Roberto C. Gamen , Pablo Martín-Ravelo , Julia I. Arias , Nidia I. Morrell

Pulsating stars in eclipsing binaries (EBs) provide an excellent opportunity to obtain precise, model-independent stellar parameters for studying oscillations in detail. One common class of pulsators in these EBs exhibits delta Scuti-type…

太阳与恒星天体物理 · 物理学 2024-10-02 T. Pawar , K. G. Hełminiak , A. Moharana , G. Pawar , M. Pyatnytskyy , H. N. Lala , M. Konacki

This study is an in-depth examination of IZ Tel and UW Vir which are semi-detached oscillating Eclipsing Algol binary systems (oEA stars). The radial velocities of both components of each system were derived using spectra observed with the…

太阳与恒星天体物理 · 物理学 2026-04-22 Alexios Liakos , David J. W. Moriarty , Julian F. West , Ahmet Erdem

We present a spectroscopic study of the eclipsing binary system AS Camelopardalis, the first such study based on phase-resolved CCD echelle spectra. Via a spectral disentangling analysis we measure the minimum masses of the stars to be M_A…

太阳与恒星天体物理 · 物理学 2015-05-27 K. Pavlovski , J. Southworth , V. Kolbas

We present the results of our study of the long-period eclipsing binary star \Aur. The results are based on spectroscopic data obtained with the UFES \'echelle spectrograph and photometric observations from TESS. The derived radial velocity…

太阳与恒星天体物理 · 物理学 2025-04-10 Kniazev Alexei , Malkov Oleg , Gorda Stanislav , Berdnikov Leonid , Katkov Ivan

In the course of a project to study eclipsing binary stars in vinicity of the Sun, we found that the cooler component of LL Aqr is a solar twin candidate. This is the first known star with properties of a solar twin existing in a…

Interacting binary stars undergo evolution that is significantly different from single stars, thus, a larger sample of such systems with precisely determined stellar parameters is needed to understand the complexities of this process. We…

太阳与恒星天体物理 · 物理学 2023-11-07 Marina Kounkel , Matteo Statti , Avani Kulkarni , Keivan G. Stassun , Meng Sun

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…

太阳与恒星天体物理 · 物理学 2020-12-22 John Southworth

Eclipsing double-lined spectroscopic binaries hosting $\delta$ Scuti-type pulsators offer a unique laboratory for simultaneously constraining stellar geometry and interior structure. In this study, we present a comprehensive analysis of…

太阳与恒星天体物理 · 物理学 2026-01-28 T. B. Pawar , A. Miszuda , K. G. Hełminiak , F. Marcadon , A. Moharana , G. Pawar , M. Konacki