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20242026
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astro-ph.SR2026

Variability classification of TESS targets in LOPS2, the first long-term pointing field of PLATO. Version 1 of the public variability catalogue

Mykyta Kliapets, Pablo Huijse, Jeroen Audenaert +28

The PLAnetary Transits and Oscillations of stars (PLATO) mission is expected to launch in January 2027. A total of 8\% of its data rate will be dedicated to complementary science t…

astro-ph.SR2025

Exploring Low-Amplitude Variability in First Overtone Cepheids with TESS

E. Plachy, H. Netzel, A. Bódi

Classical Cepheid stars that pulsate in the first overtone radial mode often exhibit additional periodicities at the millimagnitude level. Extensive studies of the OGLE data of the…

astro-ph.SR2025

Connections between the cycle-to-cycle light curve and O-C variations of the non-Blazhko RR Lyrae stars

J. M. Benkő, A. Bódi, E. Plachy +1

It has long been known that if the durations of the consecutive cycles of a pulsating star vary randomly, the O-C diagram could show quasi-periodic/irregular variations, even thoug…

astro-ph.SR2024

MOCKA -- A PLATO mock asteroseismic catalogue: Simulations for gravity-mode oscillators

N. Jannsen, A. Tkachenko, P. Royer +14

With ESA's PLATO space mission set for launch in December 2026, a new photometric legacy and a future of new scientific discoveries await. In this work we investigate PLATO's poten…

astro-ph.SR2024

Validation of the RR Lyrae period determination in the Pan-STARRS PS1 3 survey with K2

Adrienn Forró, László Molnár, Emese Plachy +2

The Pan-STARRS 3 survey has detected hundreds of thousands of variable stars thanks to its coverage and 4-year time span, even though the sampling of the light curves is relati…

astro-ph.SR2024

On the incidence rate of RR Lyrae stars with non-radial modes

H. Netzel, V. Varga, R. Szabo +2

Over the recent years, additional low-amplitude non-radial modes were detected in many of the first-overtone RR Lyrae stars. These non-radial modes form a characteristic period rat…