Results 1 to 10 of about 3,339,915 (332)
Reverse Shock Revisited in Cassiopeia A with Chandra
The Astrophysical JournalUsing data from the Chandra X-ray Observatory, we revisit the reverse shock in the supernova remnant (SNR) Cassiopeia A. Based on spectroscopy of a series of annuli in the northwest (NW) and southeast (SE), we get the radial profiles of the S/Si K α line
Yin Wu, X. J. Yang
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Optimising the global detection of solar-like oscillations
Astronomy & AstrophysicsContext. A well-established method exists for predicting the detectability of solar-like oscillations that has seen extensive application supporting target selection strategies for space-based photometric missions.
Lund Mikkel N., Chaplin William J.
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The Astrophysical JournalBlue large-amplitude pulsators (BLAPs) are a recently discovered group of hot pulsating stars whose evolutionary status remains uncertain. Their proposed progenitors are either ≃0.3 M _⊙ shell H-burning stars or ≃1.0 M _⊙ core He-burning stars, both ...
Susmita Das +2 more
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The µ Herculis system solved after nearly three centuries
Astronomy & AstrophysicsContext. µ Herculis is a bright, nearby quadruple system. Its brightest member, µ Her Aa, displays solar-like oscillations, establishing the system as a crucial benchmark for asteroseismology, provided that its mass can be determined independently of ...
Marcussen Marcus L. +13 more
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The Astrophysical JournalWe analyze the properties of satellite galaxies around 1024 Milky Way–mass hosts from the DREAMS Project, simulated within a ΛCDM cosmology. Utilizing the TNG galaxy-formation model, the DREAMS simulations incorporate both baryonic physics and ...
Jonah C. Rose +26 more
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Lithium as a Probe of Stellar and Galactic Physics
Annual Review of Astronomy and AstrophysicsLithium plays a unique role in astrophysics, as it is a powerful diagnostic for the physics and evolution of low-mass stars, Galactic archaeology, and cosmology. We review the Li observations in stars at different phases of their evolution, the strengths and the limitations of the current theoretical stellar models to explain the ...
Charbonnel, C., Prantzos, N.
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MESA Isochrones and Stellar Tracks (MIST). III. The White Dwarf Cooling Sequence
The Astrophysical Journal Supplement SeriesWe present a substantial update to the MESA Isochrones and Stellar Tracks (MIST) library, extending the MIST model grids and isochrones down the white dwarf (WD) cooling sequence with realistic physics for WD cooling timescales.
Evan B. Bauer +5 more
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Stellar Physics I — Early Stellar Infrastructure
🌌 Stellar I: Early Stellar Infrastructure Stellar I reframes stellar ignition, equilibrium, and collapse as acts of recursive modulation, not mechanical combustion. It anchors the Stellar Doctrine by treating fusion pathways—pp-chain, CNO cycle, and triple-alpha—as expressions of timestamp fit, emotional imprint, and entropy offload.
Trace, Auren, Trace, Jeremy
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The Astrophysical JournalIn interstellar environments, gas-phase polycyclic aromatic hydrocarbon (PAH) predominantly involves (photo)fragmentation, hydrogenation, and oxidation chemical routes, which lead to the formation of complex organic species.
Xiaoyi Hu +5 more
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Boron Abundances in Early B Dwarfs of the Galactic Open Cluster NGC 3293
The Astrophysical JournalNew boron abundances or upper limits have been determined for eight early B stars in the young Galactic open cluster NGC 3293, using UV spectra obtained by the Hubble Space Telescope Cosmic Origins Spectrograph.
Charles R. Proffitt +6 more
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