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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…

Solar and Stellar Astrophysics · Physics 2015-05-27 John Southworth , K. Pavlovski , E. Tamajo , B. Smalley , R. G. West , D. R. Anderson

We present an analysis of a new, detached, double-lined eclipsing binary system with K7 Ve components, discovered as part of the University of New South Wales Extrasolar Planet Search. The object is significant in that only 6 other binary…

Eclipsing binary stars provide highly accurate measurements of the fundamental physical properties of stars. They therefore serve as stringent tests of the predictions of evolutionary models upon which most stellar age determinations are…

Solar and Stellar Astrophysics · Physics 2009-02-17 Keivan G. Stassun , Leslie Hebb , Mercedes Lopez-Morales , Andrej Prsa

[abridged] We report four years of radial velocity monitoring observations of SDSS J080531.84+481233.0 that reveal significant and periodic variability, confirming the binary nature of the source. We infer an orbital period of 2.02$\pm$0.03…

Solar and Stellar Astrophysics · Physics 2016-08-17 Adam J. Burgasser , Cullen H. Blake , Christopher R. Gelino , Johannes Sahlmann , Daniella Bardalez Gagliuffi

We present a study of the properties of the O-type, massive eclipsing binary 2MASS J13130841-6239275 located in the outskirts of the Danks 2 cluster in the G305 star-forming complex, using near-infrared spectroscopy from VLT/ISAAC. We…

Solar and Stellar Astrophysics · Physics 2015-10-07 M. Kourniotis , A. Z. Bonanos , S. J. Williams , N. Castro , E. Koumpia , J. L. Prieto

Abridged. Eclipsing spectroscopic double-lined binaries are the prime source of precise and accurate measurements of masses and radii of stars. These measurements provide a stringent test of models of stellar evolution that are persistently…

Solar and Stellar Astrophysics · Physics 2023-12-22 A. Tkachenko , K. Pavlovski , N. Serebriakova , D. M. Bowman , L. IJspeert , S. Gebruers , J. Southworth

BEBOP-3 is detached eclipsing binary star that shows total eclipses of a faint M~dwarf every 13.2 days by a 9$^{\rm th}$-magnitude F9V star. High precision radial velocity measurements have recently shown that this binary star is orbited by…

Solar and Stellar Astrophysics · Physics 2025-10-28 P. F. L. Maxted , N. J. Miller , T. A. Baycroft , D. Sebastian , A. H. M. J. Triaud , D. V. Martin

We analyze extensive BVRI photometry and radial velocity measurements for three double-lined deeply-eclipsing binary stars in the field of the old open cluster NGC 7142. The short period (P = 1.9096825 d) detached binary V375 Cep is a high…

Solar and Stellar Astrophysics · Physics 2015-06-16 Eric L. Sandquist , Matthew Shetrone , Andrew W. Serio , Jerome Orosz

We report orbital parameters for two low-mass, pre-main sequence, double-lined spectroscopic binaries VSB 111 and VSB 126. These systems were originally identified as single-lined on the basis of visible-light observations. We obtained…

Solar and Stellar Astrophysics · Physics 2015-06-17 Nicole Karnath , Lisa Prato , Larry Wasserman , Guillermo Torres , Brian Skiff , Robert Mathieu

Eclipsing binaries (EBs) play an important astrophysical role in studying stellar properties and evolution. By analyzing photometric data in the LAMOST Medium-Resolution Survey field, RA: $23^h$$01^m$$51.00^s$, Dec:…

Solar and Stellar Astrophysics · Physics 2024-12-03 Jing-Yi Wang , Kai Li , Xiang Gao , Di-Fu Guo , Li-Heng Wang , Dong-Yang Gao , Ling-Zhi Li , Ya-Ni Guo , Xing Gao , Guo-You Sun

We report the detection of eclipses in LSPM J1112+7626, which we find to be a moderately bright (I_C = 12.14 +/- 0.05) very low-mass binary system with an orbital period of 41.03236 +/- 0.00002 days, and component masses M_1 = 0.395 +/-…

We report the detection of a very low mass star (VLMS) companion to the primary star 1SWASPJ234318.41+295556.5A (J2343+29A), using radial velocity (RV) measurements from the PARAS (PRL Advanced Radial-velocity Abu-sky Search) high…

Solar and Stellar Astrophysics · Physics 2016-07-13 Priyanka Chaturvedi , Abhijit Chakraborty , B. G. Anandarao , Arpita Roy , Suvrath Mahadevan

We present a complex study of the eclipsing binary system, AB Cas. The analysis of the whole TESS light curve, corrected for the binary effects, reveals 112 significant frequency peaks with 17 independent signals. The dominant frequency…

Solar and Stellar Astrophysics · Physics 2022-05-11 A. Miszuda , P. A. Kołaczek-Szymański , W. Szewczuk , J. Daszyńska-Daszkiewicz

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…

Astrophysics · Physics 2007-05-23 E. Lastennet , F. Cuisinier , T. Lejeune

We are carrying out an international, multi-wavelength program to determine the fundamental properties and independent distance estimates of selected eclipsing binaries in the LMC and SMC. Eclipsing binaries with well-defined double-line…

Context. The fact that eclipsing binaries belong to a stellar group is useful, because the former can be used to estimate distance and additional properties of the latter, and vice versa. Aims. Our goal is to analyse new spectroscopic…

Astrophysics of Galaxies · Physics 2016-03-02 E. Kıran , P. Harmanec , Ö. L. Değirmenci , M. Wolf , J. Nemravová , M. Šlechta , P. Koubský

The observations of eclipsing binary systems are of great importance in astrophysics, as they allow direct measurements of fundamental stellar parameters. By analysing high-quality space-based observations with ground-based photometric…

Solar and Stellar Astrophysics · Physics 2025-01-23 N. Alan , F. Alicavus , M. Alpsoy

In this paper we present the first results of a detailed spectroscopic and photometric analysis of the V = 11.7m eclipsing binary ASAS J052821+0338.5. With the FIES spectrograph at the Nordic Optical Telescope we have obtained a series of…

Astrophysics · Physics 2009-11-13 H. C. Stempels , L. Hebb , K. G. Stassun , J. Holtzman , N. Dunstone , L. Glowienka , S. Frandsen

We present new spectroscopic observations of the early type, double-lined eclipsing binary V446\,Cep. The radial velocities and the photometric data obtained by $Hipparcos$ were analysed for deriving the astrophysical parameters of the…

Solar and Stellar Astrophysics · Physics 2015-10-09 Ö. Çakırlı , C. Ibanoglu , E. Sipahi , A. Frasca , G. Catanzaro

We present the first full orbital and physical analysis of HD 187669, recognized by the All-Sky Automated Survey (ASAS) as the eclipsing binary ASAS J195222-3233.7. We combined multi-band photometry from the ASAS and SuperWASP public…