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Related papers: Complex asteroseismology of the B-type main sequen…

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We undertake another attempt towards seismic modelling of the most intensive studied main sequence pulsators of the early B spectral type, $\nu$ Eridani. Our analysis is extended by a requirement of fitting not only pulsational frequencies…

Solar and Stellar Astrophysics · Physics 2015-05-14 J. Daszyńska-Daszkiewicz , P. Walczak

Using the updated oscillation spectrum of $\gamma$ Pegasi, we construct a set of seismic models which reproduce two pulsational frequencies corresponding to the $\ell=0$, p$_1$ and $\ell=1$, g$_1$ modes. Then, we single out models which…

Solar and Stellar Astrophysics · Physics 2015-05-18 Przemysław Walczak , Jadwiga Daszyńska-Daszkiewicz

I review the properties of pulsators located on the upper main sequence in the HR diagram and discuss asteroseismic inferences on the internal structure of stars of spectral type A and B. Special attention is given to the problem of…

Solar and Stellar Astrophysics · Physics 2012-06-12 P. Lenz

We present results of comprehensive seismic modelling of the B-type main-sequence pulsator $\nu$ Eridani, which consists in parallel fitting of the pulsational frequencies and corresponding values of the complex, nonadiabatic parameter $f$,…

Solar and Stellar Astrophysics · Physics 2015-05-14 J. Daszyńska-Daszkiewicz , P. Walczak

We review the nature of the oscillations of main-sequence and supergiant stars of spectral type B. Seismic tuning of the interior structure parameters of the $\beta $Cep stars has been achieved since three years. The results are based on…

Astrophysics · Physics 2007-05-23 C. Aerts

After a brief introduction into the asteroseismic modelling of stars, we provide a compilation of the current seismic estimates of the core overshooting parameter and of the rotational frequency of single and binary massive stars. These…

Solar and Stellar Astrophysics · Physics 2014-03-05 Conny Aerts

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 constraints on stellar opacities, convective overshooting and rotation…

Solar and Stellar Astrophysics · Physics 2018-12-04 Jadwiga Daszynska-Daszkiewicz , Przemysław Walczak , Wojciech Szewczuk , Alosha Pamyatnykh

In this review paper, we summarise the goals of asteroseismic studies of close binary stars. We first briefly recall the basic principles of asteroseismology, and highlight how the binarity of a star can be an asset, but also a…

Astrophysics · Physics 2009-11-13 Conny Aerts

Imagine we could do asteroseismology of large samples of OB-type stars by using just one spectrum per target. That would be great! But this is probably a crazy and stupid idea. Or maybe not. Maybe we have the possibility to open a new…

Solar and Stellar Astrophysics · Physics 2015-06-22 S. Simón-Díaz

After highlighting the principle and power of asteroseismology for stellar physics, we briefly emphasize some recent progress in this research for various types of stars. We give an overview of high-precision high duty-cycle space…

Solar and Stellar Astrophysics · Physics 2015-06-22 Conny Aerts

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 complex seismic models which reproduce the observed frequencies as…

Solar and Stellar Astrophysics · Physics 2019-12-03 Jadwiga Daszynska-Daszkiewicz , Przemyslaw Walczak , Alosha Pamyatnykh , Wojciech Szewczuk

Context. In asteroseismology the pulsation mode frequencies of a star are the fundamental data that are compared to theoretical predictions to determine a star's interior physics. Recent significant advances in the numerical, theoretical…

Solar and Stellar Astrophysics · Physics 2021-12-22 Dominic M. Bowman , Mathias Michielsen

We present interpretation of the oscillation spectrum of the early B-type star $\gamma$ Pegasi, in which both low order p/g and high-order g-modes are observed. Using amplitudes and phases of the photometric and radial velocity variations,…

Solar and Stellar Astrophysics · Physics 2015-06-15 Przemysław Walczak , Jadwiga Daszyńska-Daszkiewicz , Alexey A. Pamyatnykh , Tomasz Zdravkov

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. We present the detailed frequency analysis for all these…

Solar and Stellar Astrophysics · Physics 2021-03-19 Wojciech Szewczuk , Przemysław Walczak , Jadwiga Daszyńska-Daszkiewicz

Eclipsing binary stars have long served as benchmark systems to measure fundamental stellar properties. In the past few decades, asteroseismology - the study of stellar pulsations - has emerged as a new powerful tool to study the structure…

Solar and Stellar Astrophysics · Physics 2017-02-15 Daniel Huber

Pulsational variability is observed in several types of main sequence stars with anomalous chemical abundances. In this contribution I summarize the relationship between pulsations and chemical peculiarities, giving special emphasis to…

Astrophysics · Physics 2015-05-13 O. Kochukhov

We present the results of complex seismic modelling of the Slowly Pulsating B-type star HD74560. The star pulsates in five frequencies detected in photometric observations. For all these frequencies, we identify the mode degree, $\ell$. For…

Solar and Stellar Astrophysics · Physics 2015-06-04 Przemysław Walczak , Wojciech Szewczuk , Jadwiga Daszyńska-Daszkiewicz

We report on the first asteroseismic analysis of solar-type stars observed by Kepler. Observations of three G-type stars, made at one-minute cadence during the first 33.5d of science operations, reveal high signal-to-noise solar-like…

The CoRoT and Kepler data revolutionised our view on stellar pulsation. For massive stars, the space data revealed the simultaneous presence of low-amplitude low-order modes and dominant high-order gravity modes in several B-type pulsators.…

Solar and Stellar Astrophysics · Physics 2011-09-01 Conny Aerts , Marc-Antoine Dupret

We present results of a {\bf comprehensive} asteroseismic modelling of the $\beta$ Cephei variable $\theta$ Ophiuchi. {\bf We call these studies {\it complex asteroseismology} because our goal is to reproduce both pulsational frequencies as…

Solar and Stellar Astrophysics · Physics 2015-05-13 J. Daszynska-Daszkiewicz , P. Walczak
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