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The LHS 6343 system consists of a resolved M-dwarf binary with an evolved, negligibly irradiated brown dwarf, LHS 6343 C, orbiting the primary star. Such brown dwarf eclipsing binaries present rare and unique opportunities to calibrate…

PSR J1618-3921 is one of five known millisecond pulsars (MSPs) in eccentric orbits (eMPSs) located in the Galactic plane, whose formation is poorly understood. Earlier studies of these objects revealed significant discrepancies between…

Eclipsing binaries are crucial for understanding stellar physics, allowing detailed studies of stellar masses, radii, and orbital dynamics. Recent space missions like the Transiting Exoplanet Survey Satellite (TESS) have significantly…

Solar and Stellar Astrophysics · Physics 2024-11-20 L. W. IJspeert , A. Tkachenko , C. Johnston , C. Aerts

We report the discovery of the first eclipsing detached double white dwarf (WD) binary. In a pulsation search, the low-mass helium core WD NLTT 11748 was targeted for fast (approx 1 minute) differential photometry with the Las Cumbres…

Solar and Stellar Astrophysics · Physics 2015-05-18 Justin D. R. Steinfadt , David L. Kaplan , Avi Shporer , Lars Bildsten , Steve B. Howell

The photometric and spectroscopic data for three double-lined detached eclipsing binaries were collected from the photometric and spectral surveys. The light and radial velocity curves of each binary system were simultaneously analyzed by…

Solar and Stellar Astrophysics · Physics 2021-02-10 D. -Y. Yang , L. -F. Li , Q. -W. Han

A deep (~70%) and extended (~150 days) eclipse was seen towards the young multiple stellar system V773 Tau in 2010. We interpret it as due to the passage of a circumbinary disk around the B components moving in front of the A components.…

We present VLT spectroscopy and NTT photometry of the faint cataclysmic binary SDSS J003941.06+005427.5. This object shows triple-peaked H-alpha emission with all three peaks variable in both strength and velocity. We measure an orbital…

Solar and Stellar Astrophysics · Physics 2015-05-20 John Southworth , T. R. Marsh , B. T. Gansicke , D. Steeghs , C. M. Copperwheat

We report the analysis of the detached eclipsing spectroscopic binary system LAMOST J101356.33+272410.7, which features a massive white dwarf. Using LAMOST and SDSS spectra, we determined the stellar parameters and radial velocities of both…

Abridged. Our aim is to measure the masses and radii of the stars in a newly-discovered detached eclipsing binary system to a high precision ($\approx$1%), enabling the system to be used for the calibration of free parameters in stellar…

Solar and Stellar Astrophysics · Physics 2018-08-01 J. A. Kirkby-Kent , P. F. L. Maxted , A. M. Serenelli , D. R. Anderson , C. Hellier , R. G. West

We present the photometric properties of V608 Cas from detailed studies of light curves and eclipse timings. The light curve synthesis indicates that the eclipsing pair is an overcontact binary with parameters of $\Delta T$ = 155 K, $q$ =…

Solar and Stellar Astrophysics · Physics 2022-06-01 Jang-Ho Park , Jae Woo Lee

Oscillating Algol-type eclipsing binaries (oEA) are very interesting objects that have three observational features of eclipse, pulsation, and mass transfer. Direct measurement of their masses and radii from the double-lined radial velocity…

Solar and Stellar Astrophysics · Physics 2016-03-16 Jae-Rim Koo , Jae Woo Lee , Kyeongsoo Hong , Seung-Lee Kim , Chung-Uk Lee

We present here 55 short period PCEBs containing a hot WD and a low-mass MS. Based on the photometric data from ZTF DR19, the light curves are analyzed for about 200 WDMS binaries with emission line(s) identified from SDSS or LAMOST…

Solar and Stellar Astrophysics · Physics 2024-07-19 Lifang Li , Fenghui Zhang

Eclipsing pulsar binaries and binaries with a high mass companion are ideal systems for studying and understanding the properties of plasma in magneto-ionic environments. In this work, the first paper of a series, we present MeerKAT…

High Energy Astrophysical Phenomena · Physics 2026-04-03 Jaikhomba Singha , Dongzi Li , Marisa Geyer , Maciej Serylak , Federico Abbate , Senate Lekomola , Robert Main , Andrea Possenti , Amanda Weltman

We present new long-term CCD photometry for EP And acquired during the period 2007 to 2012. The light curves display total eclipses at primary minima and season-to-season light variability. Our synthesis for all available light curves…

Solar and Stellar Astrophysics · Physics 2015-06-12 Jae Woo Lee , Tobias Cornelius Hinse , Jang-Ho Park

Detached eclipsing binaries are a fundamental tool for measuring the physical parameters of stars that are effectively evolving in isolation. Starting from more than 40,000 eclipsing binary candidates identified by the All-Sky Automated…

Solar and Stellar Astrophysics · Physics 2022-09-21 D. M. Rowan , T. Jayasinghe , K. Z. Stanek , C. S. Kochanek , Todd A. Thompson , B. J. Shappee , T. W. -S. Holoien , J. L. Prieto , W. Giles

We present high-quality ULTRACAM photometry of the eclipsing detached double-white dwarf binary NLTT 11748. This system consists of a carbon/oxygen white dwarf and an extremely-low mass (< 0.2 Msun) helium-core white dwarf in a 5.6 hr…

Extreme eclipsing binaries may harbor peculiar physical properties. In this work, we aim to identify a sample of such systems by selecting binaries with pronounced eclipsing light curves, characterized of large variability ($\Delta…

Solar and Stellar Astrophysics · Physics 2025-04-16 Jiangxinxin Zhuang , Zhi-Xiang Zhang , Wei-Min Gu , Senyu Qi

Eclipsing binary star systems provide the most accurate method of measuring both the masses and radii of stars. Moreover, they enable testing tidal synchronization and circularization theories, as well as constraining models of stellar…

Astrophysics · Physics 2008-11-04 Jonathan Devor

We present 2271 radial velocity measurements taken on 118 single-line binary stars, taken over eight years with the CORALIE spectrograph. The binaries consist of F/G/K primaries and M-dwarf secondaries. They were initially discovered…