Results 21 to 30 of about 197,159 (337)

Asteroseismology of High-Mass Stars: New Insights of Stellar Interiors With Space Telescopes

open access: yesFrontiers in Astronomy and Space Sciences, 2020
Massive stars are important metal factories in the Universe. They have short and energetic lives, and many of them inevitably explode as a supernova and become a neutron star or black hole.
Dominic M. Bowman
doaj   +1 more source

Revealing the Galaxy–Halo Connection through Machine Learning

open access: yesThe Astrophysical Journal, 2023
Understanding the connections between galaxy stellar mass, star formation rate, and dark matter halo mass represents a key goal of the theory of galaxy formation. Cosmological simulations that include hydrodynamics, physical treatments of star formation,
Ryan Hausen   +7 more
doaj   +1 more source

Looking into dark matter with asteroseismology

open access: yesFrontiers 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
doaj   +1 more source

Inversions of Stellar Structure From Asteroseismic Data

open access: yesFrontiers in Astronomy and Space Sciences, 2022
The advent of space-based photometry missions in the early 21st century enabled the application to asteroseismic data of advanced inference techniques until then restricted to the field of helioseismology.
Gaël Buldgen   +6 more
doaj   +1 more source

The Advanced Spectral Library: The Evolution of Chromospheric Wind Characteristics from Noncoronal to Hybrid Giant Stars

open access: yesThe Astrophysical Journal, 2023
The Hubble Space Telescope (HST)/Space Telescope Imaging Spectrograph treasury program Advanced Spectral Library enables investigations of the characteristics and dynamics of the wind and chromosphere of cool stars using high-quality spectral data.
Krister E. Nielsen   +3 more
doaj   +1 more source

Three-dimensional hydrodynamics simulations of shell burning in Si/O-rich layer of pre-collapse massive stars [PDF]

open access: yesEPJ Web of Conferences, 2022
We perform three-dimensional (3D)hydrodynamics simulations of shell burning in the silicon-and oxygen-rich layers in pre-collapse massive stars.Weadoptanon-rotating27 M⊙ starhaving anextended O/Si/Ne layer and afast-rotating 38 M⊙ star having a Si/Olayer,
Yoshida Takashi   +7 more
doaj   +1 more source

The Solar--Stellar Connection [PDF]

open access: yes, 2004
Stars have proven to be surprisingly prolific radio sources and the added sensitivity of the Square Kilometer Array will lead to advances in many directions.
Anglada   +42 more
core   +2 more sources

The γ Dor stars as revealed by Kepler: A key to reveal deep-layer rotation in A and F stars

open access: yesEPJ Web of Conferences, 2017
The γ Dor pulsating stars present high-order gravity modes, which make them important targets in the intermediate-and low-mass main-sequence region of the Hertzsprung-Russell diagram. Whilst we have only access to rotation in the envelope of the Sun, the
Salmon S. J. A. J.   +4 more
doaj   +1 more source

Code dependencies of pre-supernova evolution and nucleosynthesis in massive stars: Evolution to the end of core helium burning [PDF]

open access: yes, 2014
Massive stars are key sources of radiative, kinetic and chemical feedback in the Universe. Grids of massive star models computed by different groups each using their own codes, input physics choices and numerical approximations, however, lead to ...
Fryer, C.   +7 more
core   +2 more sources

Chemical element transport in stellar evolution models [PDF]

open access: yesRoyal Society Open Science, 2017
Stellar evolution computations provide the foundation of several methods applied to study the evolutionary properties of stars and stellar populations, both Galactic and extragalactic.
Maurizio Salaris, Santi Cassisi
doaj   +1 more source

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