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We present phase-resolved spectroscopy and extensive survey photometry of the detached eclipsing binary system XY Cet, which is composed of two metallic-lined stars. We measure their masses to be 1.773 +/- 0.016 and 1.615 +/- 0.014 Msun and…

太阳与恒星天体物理 · 物理学 2015-05-27 John Southworth , K. Pavlovski , E. Tamajo , B. Smalley , R. G. West , D. R. Anderson

We report the discovery of a relatively bright eclipsing binary system, which consists of a white dwarf and a main sequence K7 star with clear signs of chromospheric and spot activity. The light curve of this system shows $\sim0.2$mag…

We report differential photometric observations and radial-velocity measurements of the detached, 1.69-day period, double-lined eclipsing binary AQ Ser. Accurate masses and radii for the components are determined to better than 1.8% and…

太阳与恒星天体物理 · 物理学 2015-06-18 Guillermo Torres , Luiz Paulo R. Vaz , Claud H. Sandberg Lacy , Antonio Claret

The study of detached eclipsing binaries is one of the most powerful ways to investigate the properties of individual stars and stellar systems. We present preliminary masses, radii and effective temperatures for the eclipsing binary WW…

天体物理学 · 物理学 2009-11-10 J. Southworth , B. Smalley , P. F. L. Maxted , P. B. Etzel

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…

太阳与恒星天体物理 · 物理学 2022-02-04 P. Lampens , D. Mkrtichian , H. Lehmann , K. Gunsriwiwat , L. Vermeylen , J. Matthews , R. Kuschnig

We review the results of the 1988 multi-wavelength campaign on the late-type eclipsing binary YY Geminorum. Observations include: broad-band optical and near infra-red photometry, simultaneous optical and ultraviolet (IUE) spectroscopy,…

太阳与恒星天体物理 · 物理学 2015-06-23 C. J. Butler , N. Erkan , E. Budding , J. G. Doyle , B. Foing , G. E. Bromage , B. J. Kellett , M. Frueh , J. Huovelin , A. Brown , J. E. Neff

Irradiation effects in close binaries are crucial for a reliable determination of system parameters and understanding the close binary evolution. We study irradiated light originating from the low mass component of an eclipsing system…

太阳与恒星天体物理 · 物理学 2016-02-10 Maja Vučković , Roy H. Østensen , Peter Németh , Steven Bloemen , Peter I. Pápics

BW Aqr is a bright eclipsing binary star containing a pair of F7V stars. The absolute parameters of this binary (masses, radii, etc.) are known to good precision so they are often used to test stellar models, particularly in studies of…

太阳与恒星天体物理 · 物理学 2018-05-23 P. F. L. Maxted

In this study, we present CG Aur's photometric observations obtained in the observing seasons 2011 and 2012, the first available multi-colour light curves. Their shape indicates that the system is an Algol binary. The light curve analyses…

太阳与恒星天体物理 · 物理学 2012-09-12 Esin Sipahi , Hasan Ali Dal

Aims: Detect tertiary components of close binaries from spectroscopy and light curve modelling; investigate light-travel time effect and the possibility of magnetic activity cycles; measure mass-ratios for unstudied systems and derive…

天体物理学 · 物理学 2009-11-13 T. Szalai , L. L. Kiss , Sz. Meszaros , J. Vinko , Sz. Csizmadia

We present results of the combined photometric and spectroscopic analysis of three detached eclipsing binaries, which secondary components are not visible or very hard to identify in the optical spectra - ASAS J052743-0359.7, ASAS…

We report the discovery of a low-mass totally eclipsing system in the young (age$\simeq$28 Myr) open cluster NGC2232, during a scrutiny of their TESS light curves. The follow-up study of this detached system, TIC 43152097, is based on…

太阳与恒星天体物理 · 物理学 2023-09-27 A. Frasca , J. Alonso-Santiago , G. Catanzaro , A. Bragaglia , V. D'Orazi , X. Fu , A. Vallenari , G. Andreuzzi

We present spectroscopic and photometric analysis of the eclipsing binary KIC\,7385478. We find that the system is formed by F1V + K4III-IV components. Combining results from analysis of spectroscopic data and $Kepler$ photometry, we…

太阳与恒星天体物理 · 物理学 2017-08-23 Orkun Özdarcan , Hasan Ali Dal

Two sets of photometric observations of the system AH Tauri have been analyzed using the latest version of the Wilson-Devinney code. The results show that AH Tauri may classified as A-type of W-UMa eclipsing binary. The mass ratio of q =…

太阳与恒星天体物理 · 物理学 2014-02-13 M. A. El-Sadek , N. S. Awadalla , A. Essam , M. A. Rassem

The pulsating eclipsing binaries are remarkable systems that provide an opportunity to probe the stellar interior and to determine the fundamental stellar parameters precisely. Especially the detached eclipsing binary systems with (a)…

Double-lined spectroscopic binaries which are also eclipsing provide the most accurate stellar data, and are consequently of first importance to improve stellar evolution modelling. While the mass and radius of each component of detached…

天体物理学 · 物理学 2007-05-23 E. Lastennet , F. Cuisinier , T. Lejeune

First spectroscopic and new photometric observations of the eclipsing binary FM Leo are presented. The main aims were to determine orbital and stellar parameters of two components and their evolutionary stage. First spectroscopic…

We present a detailed study of the F-type detached eclipsing binary BK Peg, based on new photometric and spectroscopic observations. The two components, which have evolved to the upper half of the main-sequence band, are quite different…

太阳与恒星天体物理 · 物理学 2015-05-18 J. V. Clausen , S. Frandsen , H. Bruntt , E. H. Olsen , B. E. Helt , K. Gregersen , D. Juncher , P. Krogstrup

New spectroscopic observations of the double-lined eclipsing binary AQ\,Cas are presented. All available spectroscopic and photometric observations have been analysed for the fundamental properties of the components. Analyses show that the…

太阳与恒星天体物理 · 物理学 2015-06-15 C. Ibanoglu , O. Cakirli , E. Sipahi

We present here the results of astrometric, photometric and spectroscopic observations leading to the determination of the orbit and dynamical masses of the binary L dwarf 2MASSW J0746425+2000321. High angular resolution observations spread…