We present new nonlinear, time-dependent convective hydrodynamical models of RR Lyrae
stars computed assuming a constant helium-to-metal enrichment ratio and a broad range in …

Some pulsating stars are good clocks. When they are found in binary stars, the frequencies
of their luminosity variations are modulated by the Doppler effect caused by orbital motion …

Abstract The Transiting Exoplanet Survey Satellite (TESS) space telescope is collecting
continuous, high-precision optical photometry of stars throughout the sky, including …

We present the analysis of four first overtone RR Lyrae stars observed with the Kepler space
telescope, based on data obtained over nearly 2.5 yr. All four stars are found to be …

Using two years of data from the TESS space telescope, we have investigated the time
series of 633 overtone pulsating field RR Lyrae (RRc) stars. The majority of stars (82.8 per …

In order to benefit from the four year unprecedented precision of the Kepler data, we
extracted light curves from the pixel photometric data of the Kepler space telescope for 15 …

ABSTRACT We have analysed Optical Gravitational Lensing Experiment photometry for first
overtone classical Cepheids in the Large and Small Magellanic Clouds in search for …

Context. High-precision, space-based photometric missions like CoRoT and Kepler have
revealed new and surprising phenomena in classical variable stars. Such discoveries were …

Context. Additional low-amplitude signals have been observed in many RR Lyrae stars
separate from pulsations in radial modes. The most common of these are short-period …

We present the analysis of the Blazhko effect–quasi-periodic modulation of pulsation
amplitude and/or phase–in the Galactic bulge first overtone RR Lyrae stars (RRc). We used …