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Definition and analysis of the fundamental parameters of a close binary system konkoly j064029.1+385652.2 Konkoly J064029.1 + 385652.2, which is a candidate for young pre-cataclysmic variables with an sd

Superhump evolution of WZ Sge-type dwarf nova ASASSN-14cv at rebrightening stage detected 8 rebrightenings of this star. Based on the light curve profiles of the rebrightenings, we

RXTE broadband X-ray spectra of intermediate polars and white dwarf mass estimatesStars: novae, cataclysmic variables

RT Crucis: A look into the X-ray emission of a peculiar symbiotic star© 2016 ESO.Symbiotic stars are a heterogeneous class of interacting binaries. Among them, RT Cru

The binary star θ1Ori C: Orbital elements, evolutionary parameters and chemical composition-to-noise ratio, were used to investigate the radial velocity variability with time in both components of the θ1

New luminous blue variable candidates in the NGC 247 galaxy© 2020 The Author(s). We search for luminous blue variable (LBV) stars in galaxies outside

Investigation of the new cataclysmic variable 1RXS J180834.7+101041 cataclysmic variable star 1RXS J180834. 7+101041. Its spectrum exhibits double-peaked hydrogen and helium

The new pre-cataclysmic binary PG 2200+085 detached close binary with an illumination effect or the ellipsoidal deformation of a secondary star

Variability of Red Supergiants in M31 from the Palomar Transient Factory
confirms the first-overtone hypothesis and indicates that the variable stars in this sample have 12 Mo

HBHA 4705-03: A new cataclysmic variableResults of photometric and spectroscopic studies for the new eclipsing cataclysmic variable star

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