Results 1 to 10 of about 1,827 (268)
Gravity darkening and tidally perturbed stellar pulsation in the misaligned exoplanet system WASP-33 [PDF]
Astronomy & Astrophysics, 2022 Aims. WASP-33 is one of the few δ Sct stars with a known planetary companion. By analyzing the stellar oscillations, we search for possible star-planet interactions in the pattern of the pulsation. Methods.
Szilárd Kálmán +5 more
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Calibration of the convective parameters in stellar pulsation hydrocodes [PDF]
Monthly notices of the Royal Astronomical Society, 2023 Despite the appearance of two- and three-dimensional models thanks to the rapid growth of computing performance, numerical hydrocodes used to model radial stellar pulsations still apply a one-dimensional stellar envelope model without any realistic ...
Gábor B. Kovács, J. Nuspl, R. Szabó
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Constraints on stellar evolution from pulsations [PDF]
Symposium - International Astronomical Union, 1984 Consideration of the many types of intrinsic variable stars, that is, those that pulsate, reveals that perhaps a dozen classes can indicate some constraints that affect the results of stellar evolution calculations, or some interpretations of observations. Many of these constraints are not very strong or may not even be well defined yet. In this review
A. N. Cox
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THE ABUNDANCE OF HELIUM AND STELLAR PULSATION
Odessa Astronomical Publications, 2017 Radial gradient of relative amplitude of the light variation FV for galactic classical Cepheids is found. The gradient has different signs for two cases: P > 8d and P < 8d. For P > 8d the gradient is negative.
V. V. Kovtyukh
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Double-Mode Stellar Pulsations [PDF]
, 2001 34 pages, to appear as a chapter in Nonlinear Stellar Pulsation in the Astrophysics and Space Science Library (ASSL), Editors: M. Takeuti & D. Sasselov (prints double column with pstops '2:0L@.9(22.0cm,-2cm)+1L@.9(22.0cm,11.0cm)' in.ps out.ps)
Z. Kolláth, J. R. Buchler
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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.
R. Christy
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Simulations of stellar convection, pulsation and semiconvection [PDF]
Proceedings of the International Astronomical Union, 2010 AbstractWe report on modelling in stellar astrophysics with the ANTARES code. First, we describe properties of turbulence in solar granulation as seen in high-resolution calculations. Then, we turn to the first 2D model of pulsation-convection interaction in a cepheid. We discuss properties of the outer and the HeII ionization zone.
Florian Zaussinger +5 more
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On the Observed Complexity of Chaotic Stellar Pulsation [PDF]
International Astronomical Union Colloquium, 1993 The existence of some variable stars producing very complicated light curves is well known. Theoretical calculations suggest that the irregular behaviour of the pulsation models in the RV Tauri and W Virginis regime is low dimensional is the result of period-doubling or tangent bifurcations (see e.g.
Z. Kolláth
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Automated nonlinear stellar pulsation calculations: Applications to RR Lyrae stars - The slope of the fundamental blue edge and the first RRd model survey [PDF]
, 2004 We describe a methodology that allows us to follow the pulsational behavior of an RR Lyrae model consistently and automatically along its evolutionary track throughout the whole instability strip. It is based on the powerful amplitude equation formalism,
R. Szabó, Z. Kolláth, J. R. Buchler
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Stellar Pulsation and Evolution: A Combined Theoretical Renewal and Updated Models (SPECTRUM). I. Updating Radiative Opacities for Pulsation Models of Classical Cepheid and RR-Lyrae [PDF]
The Astrophysical JournalPulsating stars are universally recognized as precise distance indicators and tracers of stellar populations. Their variability, combined with well-defined relationships between pulsation properties and intrinsic evolutionary parameters such as ...
Giulia De Somma +3 more
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