Results 11 to 20 of about 461 (261)
ε-mechanism driven pulsations in hot subdwarf stars with mixed H-He atmospheres
Open Astronomy, 2017 The ε mechanism is a self-excitation mechanism of stellar pulsations which acts in regions where nuclear burning takes place. It has been shown that the ε mechanism can excite pulsations in hot pre-horizontal branch stars before they settle into the ...
Battich Tiara +3 more
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The Pre-main Sequence: Challenges and Prospects for Asteroseismology
Frontiers in Astronomy and Space Sciences, 2022 Stars do not simply pop up on the main sequence. Before the stars arrive on the zero-age main sequence, they form in the collapses of molecular clouds, gain matter through accretion processes, and compress their cores until hydrogen can burn in full ...
Konstanze Zwintz, Thomas Steindl
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Heartbeat Stars and the Ringing of Tidal Pulsations
EPJ Web of Conferences, 2015 With the advent of high precision photometry from satellites such as Kepler and CoRoT, a whole new layer of interesting and astounding astronomical objects has been revealed: heartbeat stars are an example of such objects.
Hambleton Kelly +4 more
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Asteroseismic Constraints on the Models of Hot B Subdwarfs: Convective Helium-Burning Cores
EPJ Web of Conferences, 2017 Asteroseismology of non-radial pulsations in Hot B Subdwarfs (sdB stars) offers a unique view into the interior of core-helium-burning stars. Ground-based and space-borne high precision light curves allow for the analysis of pressure and gravity mode ...
Schindler Jan-Torge +2 more
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The Astrophysical Journal, 2023 SDSS J111215.82+111745.0 is the second pulsating extremely low-mass white dwarf discovered. Two short-period pulsations, 107.56 and 134.275 s, were detected on this star, which would be the first observed pressure mode ( p -mode) pulsations observed on a
Jie Su, Yan Li
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Double-Mode Stellar Pulsation [PDF]
International Astronomical Union Colloquium, 1993 AbstractThe current observational and theoretical status of the double-mode variables is reviewed. Focusing mostly on the RR Lyrae stars, we address the question of the observational evidence of modal stability. The problem of stationarity is a crucial issue in the modelling of these stars.We mention past efforts in hydrodynamical and analytical ...
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An Overview of Stellar Pulsation Theory [PDF]
Astrophysics and Space Science, 1993 AbstractIn this paper I will give overview of the stellar pulsation theory. Starting with basic equations I will discuss modal properties of oscillations and excitation mechanisms. I also mention briefly the effects of rotation.
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Detection of stellar oscillations in HWVir
Open Astronomy, 2016 We present our analysis of K2 observations of the binary system, HWVir. We processed the raw Kepler data and used Fourier analysis to search for periodic signals that could be associated with pulsations.
Baran Andrzej S. +2 more
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The Calculation of Stellar Pulsation [PDF]
Reviews of Modern Physics, 1964 In this paper we report methods of computation which have been developed to provide a theoretical understanding of the RR Lyrae and Cepheid type pulsating stars. The results reported are intended to illuminate the methods of calculation and to provide insight into the physical processes in these stars.
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Stellar pulsations excited by a scattered mass [PDF]
Physical Review D, 1999 23 pages, 6 figures ...
FERRARI, Valeria +2 more
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