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We present photometric and spectroscopic data analysis and orbital period study of an early-type interacting binary system V382 Cyg by using all the available data. We made a simultaneous light and radial velocity curve solution. The…

Solar and Stellar Astrophysics · Physics 2012-12-10 Bulent Yasarsoy , Kadri Yakut

We report extensive radial-velocity measurements of the two giant components of the detached, 104-day period binary system of Capella. Our highly accurate three-dimensional orbital solution based on all existing spectroscopic and…

Solar and Stellar Astrophysics · Physics 2009-07-22 Guillermo Torres , Antonio Claret , Patrick A. Young

Our long term aim is to derive model-independent stellar masses and distances for long period massive binaries by combining apparent astrometric orbit with double-lined radial velocity amplitudes (SB2). We follow-up ten O+O binaries with…

We present the most precise to date orbital and physical parameters of the well known short period (P=5.975 d), eccentric (e=0.3) double-lined spectroscopic binary BY Draconis, a prototype of a class of late-type, active, spotted flare…

Solar and Stellar Astrophysics · Physics 2015-05-30 K. G. Hełminiak , M. Konacki , M. W. Muterspaugh , S. E. Browne , A. W. Howard , S. R. Kulkarni

A prerequisite for probing theortical evolutionary models for high-mass stars is the determination of stellar physical properties with a high accuracy. We do this for three binary systems containing components with masses above 10 Msun:…

Solar and Stellar Astrophysics · Physics 2018-09-26 K. Pavlovski , J. Southworth , E. Tamajo

The multiple system V505 Sagittarii is composed of at least three stars: a compact eclipsing pair and a distant component, which orbit is measured directly using speckle interferometry. In order to explain the observed orbit of the third…

Solar and Stellar Astrophysics · Physics 2010-04-21 M. Broz , P. Mayer , T. Pribulla , P. Zasche , D. Vokrouhlicky , R. Uhlar

We present a homogeneous catalogue of fundamental astrophysical parameters -- age, metallicity ([Fe/H]), heliocentric distance, and colour excess $E(G_{\mathrm{BP}}-G_{\mathrm{RP}})$ -- for 5,056 open star clusters drawn from the Unified…

Astrophysics of Galaxies · Physics 2026-05-25 Olcay Plevne , Furkan Akbaba

Three presumably young eclipsing binary systems in the direction of the Cygnus OB1, OB3 and OB9 associations are studied. Component spectra are reconstructed and their orbits are determined using light curves and spectra disentangling…

Solar and Stellar Astrophysics · Physics 2015-06-19 V. Bakis , H. Hensberge , S. Bilir , H. Bakis , F. Yilmaz , E. Kiran , O. Demircan , M. Zejda , Z. Mikulasek

We present a detailed analysis of the high-mass binary system V1216 Sco, an eclipsing Algol-type binary hosting a $\beta$ Cephei pulsator, with an orbital period of 3.92 days. This system was analyzed using TESS photometry and…

Solar and Stellar Astrophysics · Physics 2025-01-08 A. Miszuda , C. I. Eze , F. Kahraman Alicavus , C. Johnston , G. Handler

Context. The precise determinations of stellar mass at $\sim$1% provide important constraints on stellar evolution models. Accurate parallax measurements can also serve as independent benchmarks for the next Gaia data release. Aims. We aim…

Solar and Stellar Astrophysics · Physics 2019-11-27 A. Gallenne , G. Pietrzyński , D. Graczyk , B. Pilecki , J. Storm , N. Nardetto , M. Taormina , W. Gieren , A. Tkachenko , P. Kervella , A. Mérand , M. Weber

The study of apsidal motion rates in eccentric eclipsing binaries provides an important observational test of theoretical models of stellar structure and evolution. Precise physical parameters of the stellar components together with…

Solar and Stellar Astrophysics · Physics 2026-03-11 Marek Wolf , Petr Zasche , Miloslav Zejda , Martin Mašek

Main aim of this paper is the first light curve and apsidal motion analysis of thirteen eccentric eclipsing binaries and to reveal their basic physical properties. All of the systems were studied by method of period analysis of times of…

Solar and Stellar Astrophysics · Physics 2012-04-26 P. Zasche

We present multicolour photometry and modelling of the active eclipsing binary star V405 And. The components of 0.2 and 0.5 solar masses are just below and above the theoretical limit of the full convection, that is thought to be around 0.3…

Astrophysics · Physics 2010-05-18 K. Vida , K. Olah , Zs. Kovari , J. Bartus

Asteroid (175706) 1996 FG3 is a binary asteroid and the baseline target for the proposed MarcoPolo-R sample-return mission. We present thermal IR photometry obtained with the ESO VLT+VISIR together with optical photometry obtained with the…

BK Peg is a double-lined detached eclipsing binary containing two late-F stars in an orbit with small eccentricity. We use light curves from the Transiting Exoplanet Survey Satellite (TESS) and spectroscopic measurements from previous…

Solar and Stellar Astrophysics · Physics 2026-03-24 A. C. Kutluay , J. Southworth

We present the physical properties of the eclipsing binary V2281 Cyg, which shows a light-time effect due to a supposed tertiary component from its eclipse timing variation according to the $Kepler$ observations. The high-resolution spectra…

Solar and Stellar Astrophysics · Physics 2017-11-29 Jae-Rim Koo , Jae Woo Lee , Kyeongsoo Hong

Although triple systems are common, their orbital dynamics and stellar evolution remain poorly understood. We investigated the V1371 Tau system using TESS photometry, multi-epoch spectroscopy, and recent interferometric data, confirming it…

An early-type, massive, short-period ($P_{\rm orb}=2^{\rm d}.310951$) eclipsing spectroscopic binary DN Cas has been re-visited with new spectral and photometric data. The masses and radii of the components have been obtained as…

Solar and Stellar Astrophysics · Physics 2016-09-21 V. Bakis , H. Bakis , S. Bilir , Z. Eker

Convective core overshooting extends the main-sequence lifetime of a star. Evolutionary tracks computed with overshooting are quite different from those that use the classical Schwarzschild criterion, which leads to rather different…

Solar and Stellar Astrophysics · Physics 2016-07-13 Antonio Claret , Guillermo Torres

Context: HR2562B is a planetary-mass companion located 0.56arcsec (19au) from its host star. It is one of a few L/T transitional objects orbiting a young star. This companion provides insight into the evolution of young objects in the L/T…

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