Results 1 to 10 of about 9,039 (176)
Latitudinal Propagation of Thermal Rossby Waves in Stellar Convection Zones
The Astrophysical Journal, 2023 Using an analytic model, we derive the eigenfrequencies for thermal Rossby waves that are trapped radially and latitudinally in an isentropically stratified atmosphere. We ignore the star’s curvature and work in an equatorial f-plane geometry.
Rekha Jain, Bradley W. Hindman
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Convective dynamics in mantle of tidally-locked exoplanets [PDF]
Nature CommunicationsTidal locking imposes distinctive thermal forcing on super-Earth exoplanets in habitable zones, i.e., permanent stellar flux forces extraordinary day-night temperature contrast.
Daisuke Noto +4 more
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Turbulence-supported Massive Star Envelopes
The Astrophysical Journal Letters, 2023 The outer envelopes of massive ( M ≳ 10 M _⊙ ) stars exhibit large increases in opacities from forests of lines and ionization transitions (particularly from iron and helium) that trigger near-surface convection zones. One-dimensional (1D) models predict
William C. Schultz +2 more
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Asteroseismic Investigation on KIC 10526294 to Probe Convective Core Overshoot Mixing
The Astrophysical Journal, 2023 In the overshoot mixing model with an exponentially decreasing diffusion coefficient, the initial value of the diffusion coefficient plays a crucial role.
Qian-Sheng Zhang +3 more
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Overstable Convective Modes in a Polytropic Stellar Atmosphere
The Astrophysical Journal, 2023 Within the convection zone of a rotating star, the presence of the Coriolis force stabilizes long-wavelength convective modes. These modes, which would have been unstable if the star lacked rotation, are called overstable convective modes or thermal ...
Bradley W. Hindman, Rekha Jain
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Grids of Wolf–Rayet Stars Using MESA with the k − ω Model: From 25 to 120 M ⊙ at Z = 0.02
The Astrophysical Journal Supplement Series, 2023 To explore overshoot mixing and rotational mixing beyond the convective core during the core He-burning phase in massive stars, we computed a grid of stellar models, both rotating and nonrotating, with the k − ω model at Z = 0.02, covering a mass range ...
Zhi Li, Yan Li
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MERIDIONAL CIRCULATION IN SOLAR AND STELLAR CONVECTION ZONES [PDF]
The Astrophysical Journal, 2015 23 pages, 14 Figures, Submitted to the Astrophysical ...
Featherstone, Nicholas A. +1 more
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Modeling turbulent stellar convection zones: Sub-grid scales effects [PDF]
Advances in Space Research, 2016 21 pages, 6 figures, accepted for publication in Advances in Space ...
Strugarek, A. +5 more
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Three-dimensional Simulations of Massive Stars. II. Age Dependence
The Astrophysical Journal, 2023 We present 3D full star simulations, reaching up to 90% of the total stellar radius, for three 7 M _⊙ stars of different ages: zero-age main sequence (ZAMS), mid–main sequence (midMS), and terminal-age main sequence (TAMS).
R. Vanon +4 more
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Plumes in Stellar Convection Zones [PDF]
Annals of the New York Academy of Sciences, 2000 Abstract: All numerical simulations of compressible convection reveal the presence of strong downward directed flows. Thanks to helioseismology, such plumes have now also been detected at the top of the solar convection zone, on supergranular scales. Their properties may be crudely described by adopting Taylor's turbulent entrainment hypothesis, whose
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