Results 11 to 20 of about 15,412 (318)
Looking into dark matter with asteroseismology
Frontiers in Astronomy and Space Sciences, 2022 Dark matter remains as an elusive component of modern Cosmology. According to previous research, stellar physics observables can be affected by the presence of hypothetical dark matter particles, which can be produced or accreted into the stars.
Adrián Ayala
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Pulsating Stellar Atmospheres [PDF]
Symposium - International Astronomical Union, 1997 We review the basic concepts, present state of theoretical models, and the future prospects for theory and observations of pulsating stellar atmospheres. Our emphasis is on radially pulsating cool stars, which dynamic atmospheres provide a general example for the differences with standard static model atmospheres.
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Interaction Between Convection and Pulsation
Living Reviews in Solar Physics, 2015 This article reviews our current understanding of modelling convection dynamics in stars. Several semi-analytical time-dependent convection models have been proposed for pulsating one-dimensional stellar structures with different formulations for how the
Günter Houdek, Marc-Antoine Dupret
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Studying the Pulsation of Mira Variables in the Ultraviolet [PDF]
, 2000 We present results from an empirical study of the Mg II h & k emission lines of selected Mira variable stars, using spectra from the International Ultraviolet Explorer (IUE).
B. E. Wood +12 more
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Luminosity variation in the extended one-zone RR Lyrae model [PDF]
Serbian Astronomical Journal, 2005 The Stellingwerf one-zone stellar model is extended by assuming, a slow and uniform rotation that leads to a very small oblateness of the star. The matter in the core-surrounding shell is supposed to consists of a mixture of ideal gas and radiation. This
Pricopi D.
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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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Spectro-Photo-Interferometry of Stellar Pulsation (SPIPS)
EPJ Web of Conferences, 2017 We present our implementation of the parallax of pulsation method which integrates all observables and physical modelling of the photosphere to get the best statistical precision and controlled biases.
Mérand Antoine +5 more
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Pulsation-induced Spectroscopic Variability of IRAS Z02229+6208
The Astrophysical Journal, 2023 Monitoring of high-resolution spectra in the optical and near-infrared wavelength region was carried out for the early post-AGB stage star IRAS Z02229+6208 with the CARMENES instrument to reveal spectroscopic variability over the pulsation cycle of 154 ...
Laimons Začs, Kārlis Puķı̄tis
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Pulsational frequency and amplitude modulation in the δ Sct star KIC 7106205 [PDF]
, 2014 Analysis of the Kepler δ Sct star KIC 7106205 showed amplitude modulation in a single pressure mode, whilst all other pressure and gravity modes remained stable in amplitude and phase over the 1470 d length of the data set.
Bowman, Dominic, Kurtz, Donald Wayne
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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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