Results 71 to 80 of about 374,367 (293)
Validating the 1D–3D Coupling Stellar Models via Asteroseismology of 18 Kepler Main-sequence Stars
The Astrophysical JournalThe standard 1D stellar evolution model has poor descriptions of the near-surface layers of stars, and this can be improved by using the atmosphere model computed from 3D hydrodynamical simulations.
Li Zhikai +3 more
doaj +1 more source
M-dwarf stellar winds : the effects of realistic magnetic geometry on rotational evolution and planets [PDF]
, 2014 AAV acknowledges support from a Royal Astronomical Society Fellowship. JM acknowledges support from a fellowship of the Alexander von Humboldt foundation.We perform three-dimensional numerical simulations of stellar winds of early-M-dwarf stars.
Morin, J. +11 more
core +1 more source
Advanced Engineering Materials, EarlyView.Schematic representation of modes of microcrack nucleation, growth and temporary arrestment at different boundaries, with the criteria for crack propagation in three scenarios: (1) large notch, (2) defect/small sharp notch, and (3) long crack. This work revisits and integrates results on the fatigue behavior of advanced bainitic steels (in particular ...
Lucia Morales‐Rivas
wiley +1 more source
EPJ Web of Conferences, 2015 The peak bagging analysis, namely the fitting and identification of single oscillation modes in stars’ power spectra, coupled to the very high-quality light curves of red giant stars observed by Kepler, can play a crucial role for studying stellar ...
Corsaro Enrico, De Ridder Joris
doaj +1 more source
Axisymmetric Bending Oscillations of Stellar Disks [PDF]
The Astrophysical Journal, 1996 19 pages plain TeX with 7 PostScript figures; tarred, gzipped and uuencoded (406 KB).
openaire +2 more sources
Advanced Engineering Materials, EarlyView.Deep‐UV (258 nm) femtosecond pulses enable uniform amorphous silicon writing on Si(100)/(111) with a six‐fold larger fluence amorphization window than NIR methods. Optimized fluence and overlap yield 20–45 nm uniform and continuous amorphous layers. Microscopy shows sharp interfaces, and real‐time reflectivity reveals nanosecond melt–resolidification ...
Wissal Benali +5 more
wiley +1 more source
Wave topology of stellar inertial oscillations
Physical Review ResearchInertial waves in convective regions of stars exhibit topological properties linked to a Chern number of 1. The first of these is a unique, unidirectional, prograde oscillation mode within the cavity, which propagates at arbitrarily low frequencies for ...
Armand Leclerc +2 more
doaj +1 more source
White-Dwarf Asteroseismology With the Kepler Space Telescope
Frontiers in Astronomy and Space Sciences, 2020 In the course of their evolution, white-dwarf stars go through at least one phase of variability in which the global pulsations they undergo allow astronomers to peer into their interiors, making it possible to shed light on their deep inner structure ...
Alejandro H. Córsico +1 more
doaj +1 more source
A Hertzsprung-Russell Diagram For Stellar Oscillations [PDF]
Symposium - International Astronomical Union, 1988 I present evolutionary tracks and curves of constant central hydrogen abundance in diagrams based on frequencies of high-order, low-degree p modes. For stars with masses between 0.7 and 1.5 M⊙, a clean separation is obtained between the effects of varying mass and varying evolutionary state.
openaire +1 more source
Mixed-mode oscillations with multiple time scales [PDF]
, 2010 Mixed-mode oscillations (MMOs) are trajectories of a dynamical system in which there is an alternation between oscillations of distinct large and small amplitudes.
Desroches, MF +5 more
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