Results 111 to 120 of about 345 (250)

The Asteroseismological Richness of RCB and dLHdC Stars

The Astrophysical Journal
RCB stars are L ≈ 10 ^4 L _⊙ solar-mass objects that can exhibit large periods of extinction from dust ejection episodes. Many exhibit semi-regular pulsations in the range of 30–50 days with semi-amplitudes of 0.05–0.3 mag.
Tin Long Sunny Wong, Lars Bildsten
doaj   +1 more source

Simulations of Solar and Stellar Dynamos and Their Theoretical Interpretation. [PDF]

Space Sci Rev, 2023
Käpylä PJ, Browning MK, Brun AS, Guerrero G, Warnecke J.   +4 more
europepmc   +1 more source

The photometric variability of massive stars due to gravity waves excited by core convection. [PDF]

Nat Astron, 2023
Anders EH, Lecoanet D, Cantiello M, Burns KJ, Hyatt BA, Kaufman E, Townsend RHD, Brown BP, Vasil GM, Oishi JS, Jermyn AS.   +10 more
europepmc   +1 more source

Observations of Cool-Star Magnetic Fields

Living Reviews in Solar Physics, 2012
Cool stars like the Sun harbor convection zones capable of producing substantial surface magnetic fields leading to stellar magnetic activity. The influence of stellar parameters like rotation, radius, and age on cool-star magnetism, and the importance ...
Ansgar Reiners
doaj  

Impacts of small-scale dynamo on rotating columnar convection in stellar convection zones

Astronomy & Astrophysics
Context. Understanding the complex interactions between convection, magnetic fields, and rotation is key to modeling the internal dynamics of the Sun and stars. Under rotational influence, compressible convection forms prograde-propagating convective columns near the equator.
openaire   +3 more sources

Dynamics of Large-Scale Solar Flows. [PDF]

Space Sci Rev, 2023
Hotta H, Bekki Y, Gizon L, Noraz Q, Rast M.   +4 more
europepmc   +1 more source

The Role of the Third Dredge-up and Mass Loss in Shaping the Initial–Final Mass Relation of White Dwarfs

The Astrophysical Journal
The initial–final mass relation (IFMR) plays a crucial role in understanding stellar structure and evolution by linking a star’s initial mass to the mass of the resulting white dwarf.
Francesco Addari, Paola Marigo, Alessandro Bressan, Guglielmo Costa, Kendall Shepherd, Guglielmo Volpato   +5 more
doaj   +1 more source

Numerical Simulation of Electrodialysis Desalination for Multicomponent Salt Lake Brine

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Electrodialysis (ED) technology is presently recognized as an effective approach for extracting lithium from salt lake brine. This study concentrates on modeling the ED desalination process applied to multicomponent salt lake brine and equivalent NaCl solutions.
Kang Li, Qian Zhang, Yun Ding, Xiaoyan Wei, Wanqi Wang, Yuan Sui, Ruizhi Hu, Bing Pan, Qing Yang   +8 more
wiley   +1 more source

Numerical Study of MHD Hybrid Nanofluid Flow With Multiple Slip Effects Over a Variable Porous Stretching Surface

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This work discusses the thermal performance of magnetized hybrid nanofluid flow over a variable porous stretchable surface, emphasizing the underlying physical mechanisms governing heat and mass transfer. The Cattaneo–Christov flux model is used in place of Fourier's and Fick's laws to incorporate relaxation effects, ensuring a more realistic ...
Mounirah Areshi, Abdul Bariq, Salemah A. Almutlak, Fahad Maqbul Alamrani, Zehba Raizah, Anwar Saeed   +5 more
wiley   +1 more source

Resolving an Asteroseismic Catastrophe: Structural Diagnostics from p-mode Phase Functions off the Main Sequence

The Astrophysical Journal
On the main sequence, the asteroseismic small frequency separation δν _02 between radial and quadrupole p -modes is customarily interpreted to be a direct diagnostic of internal structure.
J. M. Joel Ong, Christopher J. Lindsay, Claudia Reyes, Dennis Stello, Ian W. Roxburgh   +4 more
doaj   +1 more source