46 citations · 58 across the 10 of their papers we have counts for
10 papers
Asteroseismic analysis of RY Leporis: the post-main sequence HADS in a binary system
Wojciech Niewiadomski, Jadwiga Daszyńska-Daszkiewicz, Przemysław Walczak +4
We present a comprehensive study of the pulsating primary component of the long-period binary system RY Lep. The spectral energy distribution and the absence of detectable lines in…
Period-Luminosity Relations, projection factor and radii of Anomalous Cepheids
Piotr Wielgórski, Grzegorz Pietrzyński, Wolfgang Gieren +24
Anomalous Cepheids are radially pulsating stars observed in dwarf galaxies, the Galactic bulge and halo, and globular clusters. Similarly to other radially pulsating stars, they ca…
Resonance locking and tidal evolution in rotating γ-Doradus binaries
L. Fellay, M. -A. Dupret, P. A. Kołaczek-Szymański
In binary systems, studying tidal interactions is key to understanding the evolution of binary populations. The primary dissipation process occurring in stars with radiative envelo…
SPICE -- modelling synthetic spectra of stars with non-homogeneous surfaces
M. Jabłońska, T. Różański, L. Casagrande +4
In the era of large time-domain spectro-photometric surveys, surface variations such as starspots, chemical inhomogeneities, pulsations, rotational distortions, and binary interact…
Solving the mystery of extreme light variability in the massive eccentric system MACHO 80.7443.1718
Piotr A. Kołaczek-Szymański, Piotr Łojko, Andrzej Pigulski +2
The evolution of massive stars is heavily influenced by their binarity, and the massive eccentric binary system MACHO 80.7443.1718 (ExtEV) serves as a prime example. This study exp…
OGLE-BLAP-001 and ZGP-BLAP-08: two possible magnetic blue large-amplitude pulsators
Andrzej Pigulski, Piotr A. Kołaczek-Szymański, Marta Święch +2
Blue large-amplitude pulsators (BLAPs) are a newly discovered group of compact pulsating stars whose origin needs to be explained. Of the existing evolutionary scenarios that could…
Blue large-amplitude pulsators formed from the merger of low-mass white dwarfs
Piotr A. Kołaczek-Szymański, Andrzej Pigulski, Piotr Łojko
Blue large-amplitude pulsators (BLAPs) are a recently discovered group of hot stars pulsating in radial modes. Their origin needs to be explained, and several scenarios for their f…
Spectrum of the secondary component and new orbital elements of the massive triple star Delta Ori A
A. Oplištilová, P. Mayer, P. Harmanec +13
Orionis is the closest massive multiple stellar system and one of the brightest members of the Orion OB association. The primary (Aa1) is a unique evolved O star. In this work,…
Tidally excited oscillations in MACHO 80.7443.1718: Changing amplitudes and frequencies, high-frequency tidally excited mode, and a decrease in the orbital period
P. A. Kołaczek-Szymański, A. Pigulski, M. Wrona +2
Eccentric ellipsoidal variables (aka heartbeat stars) is a class of eccentric binaries in which proximity effects, tidal distortion due to time-dependent tidal potential in particu…
Massive heartbeat stars from TESS. I. TESS sectors 1-16
Piotr Antoni Kołaczek-Szymański, Andrzej Pigulski, Gabriela Michalska +2
Heartbeat stars are eccentric binaries exhibiting characteristic shape of brightness changes during periastron passage caused by tidal distortion of the components. Variable tidal…