60 citations · 279 across the 28 of their papers we have counts for
29 papers
Asteroseismology of the multiperiodic field SX Phe pulsator BL Camelopardalis
W. Szewczuk, J. Daszyńska-Daszkiewicz, P. Walczak +1
BL Camelopardalis (BL Cam) is the most metal-poor SX Phoenicis star known in the Galactic field, making it an excellent test bed for studies of Population II stellar structure and…
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…
Asteroseismology of blue stragglers in Centauri: the case of five double-mode radial SX Phoenicis pulsators
J. Daszyńska-Daszkiewicz, P. Walczak, P. Góra +1
We present the first extensive seismic modelling of SX Phe stars in the stellar system Cen. First, using the new values of reddening and distance modulus , an…
Asteroseismology of the fast-rotating high-amplitude Scuti star V2367 Cygni
Jadwiga Daszynska-Daszkiewicz, Wojciech Szewczuk, Przemysław Walczak
We present the comprehensive analysis of the high-amplitude Sct star V2367 Cygni. Firstly, we perform the frequency analysis for the whole available set of the {\it Kepler} and…
Asteroseismology of double-mode radial Scuti stars: AE Ursae Majoris and RV Arietis
J. Daszynska-Daszkiewicz, P. Walczak, W. Szewczuk +1
We construct complex seismic models of two high-amplitude delta Sct stars, AE UMa and RV Ari, each pulsating in two radial modes: fundamental and first overtone. The models reprodu…
A need to revise stellar opacities from asteroseismology of Scuti stars
Jadwiga Daszyńska-Daszkiewicz, Przemysław Walczak, Alexey Pamyatnykh +2
We construct seismic models of the four double-mode radial Scuti stars adopting opacities from three databases: OPAL, OP and OPLIB. The aim is to find the models that fit the o…
The eclipsing binary systems with Scuti component -- II. AB Cas
A. Miszuda, P. A. Kołaczek-Szymański, W. Szewczuk +1
We present a complex study of the eclipsing binary system, AB Cas. The analysis of the whole TESS light curve, corrected for the binary effects, reveals 112 significant frequency p…
Asteroseismology of the double-radial mode Scuti star BP Pegasi
Jadwiga Daszyńska-Daszkiewicz, P. Walczak, A. A. Pamyatnykh +1
Using the ASAS data, we determine the pulsational frequencies of the high-amplitude Sct star BP Pegasi. The analysis revealed only the two known, independent frequencies. On th…
Seismic modeling of a very young SPB star -- KIC8264293
Wojciech Szewczuk, Przemysław Walczak, Jadwiga Daszyńska-Daszkiewicz +1
KIC8264293 is a fast rotating B-type pulsator observed by Kepler satellite. Its photometric variability is mainly due to pulsations in high-order g modes. Besides, we detected a we…
The eclipsing binary systems with Scuti component. I. KIC 10661783
A. Miszuda, W. Szewczuk, J. Daszyńska-Daszkiewicz
We present a comprehensive study of the eclipsing binary system KIC 10661783. The analysis of the whole Kepler light curve, corrected for the binary effects, reveals a rich oscilla…
Mode identification and seismic study of Scuti, the prototype of a class of pulsating stars
Jadwiga Daszynska-Daszkiewicz, A. A. Pamyatnykh, P. Walczak +3
We present a seismic study of Scuti based on a mode identification from multicoulor photometry. The dominant frequency can be associated only with a radial mode and the second…
Variability of newly identified B-type stars observed by Kepler
Wojciech Szewczuk, Przemysław Walczak, Jadwiga Daszyńska-Daszkiewicz
Recent re-determination of stellar atmospheric parameters for a sample of stars observed during the {\it Kepler} mission allowed to enlarge the number of {\it Kepler} B-type stars.…
Seismic analysis of the double-mode radial pulsator SX Phoenicis
Jadwiga Daszyńska-Daszkiewicz, A. A. Pamyatnykh, P. Walczak +1
We present the results of complex seismic analysis of the prototype star SX Phoenicis. This analysis consists of a simultaneous fitting of the two radial-mode frequencies, the corr…
Simultaneous binary and asteroseismic modelling of the Kepler system KIC 10661783 with the Scuti component
Amadeusz Miszuda, Wojciech Szewczuk, Jadwiga Daszyńska-Daszkiewicz
We present the results of analysis and modelling of the eclipsing binary system, KIC 10661783. The Fourier analysis of the Kepler light curve, corrected for the binary effects, rev…
Testing stellar opacities using asteroseismology
Jadwiga Daszynska-Daszkiewicz, Przemyslaw Walczak, Alosha Pamyatnykh +1
We present what constraints on opacities can be derived from the analysis of stellar pulsations of BA-type main-sequence stars. This analysis consists of the construction of comple…
Complex asteroseismology of SX Phoenicis
J. Daszyńska-Daszkiewicz, P. Walczak, A. Pamyatnykh +2
We present seismic analysis of the prototype SX Phoenicis that aims at fitting the two radial-mode frequencies and the corresponding values of the bolometric flux amplitude (the pa…
What have we learnt from pulsations of B-type stars?
Jadwiga Daszynska-Daszkiewicz, Przemysław Walczak, Wojciech Szewczuk +1
We review the main results obtained from our seismic studies of B-type main sequence pulsators, based on the ground-based, MOST, Kepler and BRITE observations. Important constraint…
Domains of pulsational instability of low-frequency modes in rotating upper main-sequence stars
Wojciech Szewczuk, Jadwiga Daszyńska-Daszkiewicz
We determine instability domains on the Hertzsprung-Russel diagram for rotating main sequence stars with masses 2-20 . The effects of the Coriolis force are treate…
Deciphering the period spacing pattern in the oscillation spectrum of the SPB star KIC 7760680
Wojciech Szewczuk, Jadwiga Daszyńska-Daszkiewicz, Przemysław Walczak
We present the analysis of KIC 7760680, the rotating Slowly Pulsating B-type star identified in the Kepler photometry. The oscillation spectrum of the star exhibits a series of 36…
Seismic modelling of the rotating, slowly pulsating B-type star HD 21071
Wojciech Szewczuk, Jadwiga Daszyńska-Daszkiewicz
Interpretation of the oscillation spectrum of the slowly pulsating B-type star HD21071 is presented. We show that non-rotating models cannot account for the two highest amplitude f…
Identification of pulsational modes in rotating slowly pulsating B-type stars
W. Szewczuk, J. Daszyńska-Daszkiewicz
Knowledge of the geometry of pulsational modes is a prerequisite for seismic modelling of stars. In the case of slowly pulsating B-type (SPB) pulsators, the simple zero-rotation ap…
Interpretation of the oscillation spectrum of HD 50230 - a failure of richness
Wojciech Szewczuk, Jadwiga Daszyńska-Daszkiewicz, Wojciech Dziembowski
Attempts to interpret the observed oscillation spectrum of the SPB star HD 50230 are reported. We argue that a nearly equidistant period spacing found in the oscillation spectrum o…
The Cep/SPB star 12 Lacertae: extended mode identification and complex seismic modelling
J. Daszyńska-Daszkiewicz, W. Szewczuk, P. Walczak
Results of mode identification and seismic modelling of the Cep/SBP star 12 Lacertae are presented. Using data on the multi-colour photometry and radial velocity variations, we…
Constraints on stellar parameters of the SPB star HD182255 from complex asteroseismology
Przemysław Walczak, Wojciech Szewczuk, Jadwiga Daszyńska-Daszkiewicz
Seismic modeling of the Slowly Pulsating B-type star HD182255 yields strong constraints on the radial orders of the two dominant modes. For these frequencies, we derive also the em…